CISA Cybersecurity Alerts
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Flash cybersecurity advisories from the US Government. These alerts provide timely technical and operational information, indicators of compromise, and mitigations for current major security threats, vulnerabilities, and exploits. These alerts have been edited and adapted for audio by The CyberWire as a public service.
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Jun 15, 2023
CISA Alert AA23-165A – Understanding Ransomware Threat Actors: LockBit.
CISA, FBI, the MS-ISAC, and international partners are releasing this Cybersecurity Advisory to detail LockBit ransomware incidents and provide recommended mitigations to enable network defenders to proactively improve their organization’s defenses against this ransomware operation.
AA23-165A Alert, Technical Details, and Mitigations
Stopransomware.gov is a whole-of-government approach that gives one central location for ransomware resources and alerts.
See the Center for Internet Security (CIS) Critical Security Controls (CIS Controls) https://www.cisecurity.org/insights/white-papers/cis-community-defense-model-2-0 for information on strengthening an organization’s cybersecurity posture through implementing a prescriptive, prioritized, and simplified set of best.
See the CIS Community Defense Model 2.0 (CDM 2.0) for the effectiveness of the CIS Controls against the most prevalent types of attacks and how CDM 2.0 can be used to design, prioritize, implement, and improve an organization’s cybersecurity program.
See Blueprint for Ransomware Defense for a clear, actionable framework for ransomware mitigation, response, and recovery built around the CIS Controls.
No-cost cyber hygiene services: Cyber Hygiene Services and Ransomware Readiness Assessment.
U.S. DIB sector organizations may consider signing up for the NSA Cybersecurity Collaboration Center’s DIB Cybersecurity Service Offerings, including Protective Domain Name System services, vulnerability scanning, and threat intelligence collaboration for eligible organizations. For more information on how to enroll in these services, email dib_defense@cyber.nsa.gov
To report incidents and anomalous activity or to request incident response resources or technical assistance related to these threats, contact CISA at report@cisa.gov, or call (888) 282-0870, or report incidents to your local FBI field office.
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Jun 9, 2023
CISA Alert AA23-158A – #StopRansomware: CL0P Ransomware Gang Exploits CVE-2023-34362 MOVEit Vulnerability.
FBI and CISA are releasing this joint CSA to disseminate known CL0P ransomware IOCs and TTPs identified through FBI investigations as recently as June 2023.
AA23-158A Alert, Technical Details, and Mitigations
Stopransomware.gov is a whole-of-government approach that gives one central location for ransomware resources and alerts.
Resource to mitigate a ransomware attack: CISA-Multi-State Information Sharing and Analysis Center (MS-ISAC) Joint Ransomware Guide.
Zero-Day Vulnerability in MOVEit Transfer Exploited for Data Theft | Mandiant
MOVEit Transfer Critical Vulnerability (May 2023) - Progress Community
MOVEit Transfer Critical Vulnerability CVE-2023-34362 Rapid Response (huntress.com)
No-cost cyber hygiene services: Cyber Hygiene Services and Ransomware Readiness Assessment.
U.S. DIB sector organizations may consider signing up for the NSA Cybersecurity Collaboration Center’s DIB Cybersecurity Service Offerings, including Protective Domain Name System services, vulnerability scanning, and threat intelligence collaboration for eligible organizations. For more information on how to enroll in these services, email dib_defense@cyber.nsa.gov
To report incidents and anomalous activity or to request incident response resources or technical assistance related to these threats, contact CISA at report@cisa.gov, or call (888) 282-0870, or report incidents to your local FBI field office.
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May 25, 2023
CISA Alert AA23-144A – People's Republic of China state-sponsored cyber actor living off the land to evade detection.
Cybersecurity authorities are issuing this joint Cybersecurity Advisory to highlight a recent cluster of activity associated with a People’s Republic of China state-sponsored cyber actor, also known as Volt Typhoon.
AA23-144A Alert, Technical Details, and Mitigations
Active Directory and domain controller hardening: Best Practices for Securing Active Directory | Microsoft Learn
CISA regional cyber threats: China Cyber Threat Overview and Advisories
Microsoft Threat Intelligence blog: Volt Typhoon targets US critical infrastructure with living-off-the-land techniques | Microsoft Security Blog
No-cost cyber hygiene services: Cyber Hygiene Services and Ransomware Readiness Assessment.
U.S. DIB sector organizations may consider signing up for the NSA Cybersecurity Collaboration Center’s DIB Cybersecurity Service Offerings, including Protective Domain Name System services, vulnerability scanning, and threat intelligence collaboration for eligible organizations. For more information on how to enroll in these services, email dib_defense@cyber.nsa.gov
To report incidents and anomalous activity or to request incident response resources or technical assistance related to these threats, contact CISA at report@cisa.gov, or call (888) 282-0870, or report incidents to your local FBI field office.
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May 18, 2023
CISA Alert AA23-136A – #StopRansomware: BianLian Ransomware Group.
FBI, CISA, and the Australian Cyber Security Centre are releasing this joint Cybersecurity Advisory to disseminate known BianLian ransomware and data extortion group IOCs and TTPs identified through FBI and ACSC investigations as of March 2023.
AA23-136A Alert, Technical Details, and Mitigations
AA23-136A.STIX_.xml
Stopransomware.gov, a whole-of-government approach with one central location for U.S. ransomware resources and alerts.
cyber.gov.au for the Australian Government’s central location to report cyber incidents, including ransomware, and to see advice and alerts. The site also provides ransomware advisories for businesses and organizations to help mitigate cyber threats.
CISA-Multi-State Information Sharing and Analysis Center (MS-ISAC) Joint Ransomware Guide for guidance on mitigating and responding to a ransomware attack
No-cost cyber hygiene services: Cyber Hygiene Services and Ransomware Readiness Assessment.
See CISA Insights Mitigations and Hardening Guidance for MSPs and Small- and Mid-sized Businesses for guidance on hardening MSP and customer infrastructure.
U.S. DIB sector organizations may consider signing up for the NSA Cybersecurity Collaboration Center’s DIB Cybersecurity Service Offerings, including Protective Domain Name System services, vulnerability scanning, and threat intelligence collaboration for eligible organizations. For more information on how to enroll in these services, email dib_defense@cyber.nsa.gov
To report incidents and anomalous activity or to request incident response resources or technical assistance related to these threats, contact CISA at report@cisa.gov, or call (888) 282-0870, or report incidents to your local FBI field office.
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May 12, 2023
CISA Alert AA23-131A – Malicious Actors Exploit CVE-2023-27350 in PaperCut MF and NG.
FBI and CISA are releasing this joint Cybersecurity Advisory in response to the active exploitation of CVE-2023-27350. This vulnerability occurs in certain versions of PaperCut NG and PaperCut MF, software applications that help organizations manage printing services, and enables an unauthenticated actor to execute malicious code remotely without credentials.
AA23-131A Alert, Technical Details, and Mitigations
PaperCut: URGENT | PaperCut MF/NG vulnerability bulletin (March 2023)
Huntress: Critical Vulnerabilities in PaperCut Print Management Software
No-cost cyber hygiene services: Cyber Hygiene Services and Ransomware Readiness Assessment.
See CISA Insights Mitigations and Hardening Guidance for MSPs and Small- and Mid-sized Businesses for guidance on hardening MSP and customer infrastructure.
U.S. DIB sector organizations may consider signing up for the NSA Cybersecurity Collaboration Center’s DIB Cybersecurity Service Offerings, including Protective Domain Name System services, vulnerability scanning, and threat intelligence collaboration for eligible organizations. For more information on how to enroll in these services, email dib_defense@cyber.nsa.gov
To report incidents and anomalous activity or to request incident response resources or technical assistance related to these threats, contact CISA at report@cisa.gov, or call (888) 282-0870, or report incidents to your local FBI field office.
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May 11, 2023
CISA Alert AA23-129A – Hunting Russian intelligence “Snake” malware.
The Snake implant is considered the most sophisticated cyber espionage tool designed and used by Center 16 of Russia’s Federal Security Service, or FSB, for long-term intelligence collection on sensitive targets.
AA23-129A Alert, Technical Details, and Mitigations
For more information on FSB and Russian state-sponsored cyber activity, please see the joint advisory Russian State-Sponsored and Criminal Cyber Threats to Critical Infrastructure and CISA’s Russia Cyber Threat Overview and Advisories webpage.
No-cost cyber hygiene services: Cyber Hygiene Services and Ransomware Readiness Assessment.
See CISA Insights Mitigations and Hardening Guidance for MSPs and Small- and Mid-sized Businesses for guidance on hardening MSP and customer infrastructure.
U.S. DIB sector organizations may consider signing up for the NSA Cybersecurity Collaboration Center’s DIB Cybersecurity Service Offerings, including Protective Domain Name System services, vulnerability scanning, and threat intelligence collaboration for eligible organizations. For more information on how to enroll in these services, email dib_defense@cyber.nsa.gov
To report incidents and anomalous activity or to request incident response resources or technical assistance related to these threats, contact CISA at report@cisa.gov, or call (888) 282-0870, or report incidents to your local FBI field office.
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Apr 20, 2023
CISA Alert AA23-108A – APT28 exploits known vulnerability to carry out reconnaissance and deploy malware on Cisco routers.
The UK National Cyber Security Centre (NCSC), NSA, CISA, and FBI are releasing this joint advisory to provide TTPs associated with APT28’s exploitation of Cisco routers in 2021.
AA23-108A Alert, Technical Details, and Mitigations
Malware Analysis Report
Resource to mitigate a ransomware attack: CISA-Multi-State Information Sharing and Analysis Center (MS-ISAC) Joint Ransomware Guide.
No-cost cyber hygiene services: Cyber Hygiene Services and Ransomware Readiness Assessment.
See CISA Insights Mitigations and Hardening Guidance for MSPs and Small- and Mid-sized Businesses for guidance on hardening MSP and customer infrastructure.
U.S. DIB sector organizations may consider signing up for the NSA Cybersecurity Collaboration Center’s DIB Cybersecurity Service Offerings, including Protective Domain Name System services, vulnerability scanning, and threat intelligence collaboration for eligible organizations. For more information on how to enroll in these services, email dib_defense@cyber.nsa.gov
To report incidents and anomalous activity or to request incident response resources or technical assistance related to these threats, contact CISA at report@cisa.gov, or call (888) 282-0870, or report incidents to your local FBI field office.
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Mar 18, 2023
CISA Alert AA23-075A – #StopRansomware: LockBit 3.0.
CISA, FBI, and the Multi-State Information Sharing and Analysis Center are releasing this joint advisory to share known LockBit 3.0 ransomware IOCs and TTPs identified through FBI investigations as recently as March 2023.
AA23-075A Alert, Technical Details, and Mitigations
Stopransomware.gov is a whole-of-government approach that gives one central location for ransomware resources and alerts.
Resource to mitigate a ransomware attack: CISA-Multi-State Information Sharing and Analysis Center (MS-ISAC) Joint Ransomware Guide.
No-cost cyber hygiene services: Cyber Hygiene Services and Ransomware Readiness Assessment.
See CISA Insights Mitigations and Hardening Guidance for MSPs and Small- and Mid-sized Businesses for guidance on hardening MSP and customer infrastructure.
U.S. DIB sector organizations may consider signing up for the NSA Cybersecurity Collaboration Center’s DIB Cybersecurity Service Offerings, including Protective Domain Name System services, vulnerability scanning, and threat intelligence collaboration for eligible organizations. For more information on how to enroll in these services, email dib_defense@cyber.nsa.gov
To report incidents and anomalous activity or to request incident response resources or technical assistance related to these threats, contact CISA at report@cisa.gov, or call (888) 282-0870, or report incidents to your local FBI field office.
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Mar 16, 2023
CISA Alert AA23-074A – Threat actors exploit progress telerik vulnerability in U.S. government IIS server.
CISA, FBI, and the Multi-State Information Sharing and Analysis Center are releasing this joint Cybersecurity Advisory to provide IT infrastructure defenders with TTPs, IOCs, and methods to detect and protect against recent exploitation against Microsoft Internet Information Services web servers.
AA23-074A Alert, Technical Details, and Mitigations
AA23-074A STIX XML
MAR-10413062-1.v1 Telerik Vulnerability in U.S. Government IIS Server
Telerik: Exploiting .NET JavaScriptSerializer Deserialization (CVE-2019-18935)
ACSC Advisory 2020-004
Bishop Fox CVE-2019-18935: Remote Code Execution via Insecure Deserialization in Telerik UI
Volexity Threat Research: XE Group
GitHub: Proof-of-Concept Exploit for CVE-2019-18935
Microsoft: Configure Logging in IIS
GitHub: CVE-2019-18935
No-cost cyber hygiene services: Cyber Hygiene Services and Ransomware Readiness Assessment.
See CISA Insights Mitigations and Hardening Guidance for MSPs and Small- and Mid-sized Businesses for guidance on hardening MSP and customer infrastructure.
U.S. DIB sector organizations may consider signing up for the NSA Cybersecurity Collaboration Center’s DIB Cybersecurity Service Offerings, including Protective Domain Name System services, vulnerability scanning, and threat intelligence collaboration for eligible organizations. For more information on how to enroll in these services, email dib_defense@cyber.nsa.gov
To report incidents and anomalous activity or to request incident response resources or technical assistance related to these threats, contact CISA at report@cisa.gov, or call (888) 282-0870, or report incidents to your local FBI field office.
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Mar 3, 2023
CISA Alert AA23-061A – #StopRansomware: Royal ransomware.
CISA and FBI are releasing this joint advisory to disseminate known Royal ransomware IOCs and TTPs identified through recent FBI threat response activities.
AA23-061A Alert, Technical Details, and Mitigations
AA23-061A STIX XML
Royal Rumble: Analysis of Royal Ransomware (cybereason.com)
DEV-0569 finds new ways to deliver Royal ransomware, various payloads - Microsoft Security Blog
2023-01: ACSC Ransomware Profile - Royal | Cyber.gov.au
See Stopransomware.gov, a whole-of-government approach, for ransomware resources and alerts.
No-cost cyber hygiene services: Cyber Hygiene Services and Ransomware Readiness Assessment.
See CISA Insights Mitigations and Hardening Guidance for MSPs and Small- and Mid-sized Businesses for guidance on hardening MSP and customer infrastructure.
U.S. DIB sector organizations may consider signing up for the NSA Cybersecurity Collaboration Center’s DIB Cybersecurity Service Offerings, including Protective Domain Name System services, vulnerability scanning, and threat intelligence collaboration for eligible organizations. For more information on how to enroll in these services, email dib_defense@cyber.nsa.gov
To report incidents and anomalous activity or to request incident response resources or technical assistance related to these threats, contact CISA at report@cisa.gov, or call (888) 282-0870, or report incidents to your local FBI field office.
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Mar 3, 2023
CISA Alert AA23-059A – CISA red team shares key findings to improve monitoring and hardening of networks.
The Cybersecurity and Infrastructure Security Agency is releasing this Cybersecurity Advisory detailing activity and key findings from a recent CISA red team assessment—in coordination with the assessed organization—to provide network defenders recommendations for improving their organization's cyber posture.
AA23-059A Alert, Technical Details, and Mitigations
No-cost cyber hygiene services: Cyber Hygiene Services and Ransomware Readiness Assessment.
See CISA Insights Mitigations and Hardening Guidance for MSPs and Small- and Mid-sized Businesses for guidance on hardening MSP and customer infrastructure.
U.S. DIB sector organizations may consider signing up for the NSA Cybersecurity Collaboration Center’s DIB Cybersecurity Service Offerings, including Protective Domain Name System services, vulnerability scanning, and threat intelligence collaboration for eligible organizations. For more information on how to enroll in these services, email dib_defense@cyber.nsa.gov
To report i…
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Feb 10, 2023
CISA Alert AA23-040A – #StopRansomware: ransomware attacks on critical infrastructure fund DPRK malicious cyber activities.
CISA, NSA, FBI, the US Department of Health and Human Services, the Republic of Korea National Intelligence Service, and the Republic of Korea Defense Security Agency are issuing this alert to highlight ongoing ransomware activity against Healthcare and Public Health Sector organizations and other critical infrastructure sector entities.
AA23-040A Alert, Technical Details, and Mitigations
CISA’s North Korea Cyber Threat Overview and Advisories webpage.
Stairwell provided a YARA rule to identify Maui ransomware, and a Proof of Concept public RSA key extractor at the following link: https://www.stairwell.com/news/threat-research-report-maui-ransomware/
See Stopransomware.gov, a whole-of-government approach, for ransomware resources and alerts.
No-cost cyber hygiene services: Cyber Hygiene Services and Ransomware Readiness Assessment.
See CISA Insights Mitigations and Hardening Guidance for MSPs and Small- and Mid-sized Businesses for guidance on hardening MSP and customer infrastructur…
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Feb 9, 2023
CISA Alert AA23-039A – ESXiArgs ransomware virtual machine recovery guidance.
CISA and the FBI are releasing this alert in response to the ongoing ransomware campaign, known as “ESXiArgs.” Malicious actors are exploiting known vulnerabilities in VMware ESXi servers that are likely running unpatched and out-of-service or out-of-date versions of VMware ESXi software to gain access and deploy ransomware.
AA23-039A Alert, Technical Details, and Mitigations
CISA has released an ESXiArgs recovery script at github.com/cisagov/ESXiArgs-Recover
VMware Security Response Center (vSRC) Response to 'ESXiArgs' Ransomware Attack…
Enes Sonmez and Ahmet Aykac, YoreGroup Tech Team: decrypt your crypted files in…
See Stopransomware.gov, a whole-of-government approach, for ransomware resources and alerts.
No-cost cyber hygiene services: Cyber Hygiene Services and Ransomware Readiness Assessment.
See CISA Insights Mitigations and Hardening Guidance for MSPs and Small- and Mid-sized Businesses for guidance on hardening MSP and customer infrastructure.
U.S. DIB sector organiza…
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Jan 26, 2023
CISA Alert AA23-025A – Protecting against malicious use of remote monitoring and management software
CISA, NSA, and the MS-ISAC are releasing this alert to warn network defenders about malicious use of legitimate remote monitoring and management software.
AA23-025A Alert, Technical Details, and Mitigations
For a downloadable copy of IOCs, see AA23-025.stix
Silent Push uncovers a large trojan operation featuring Amazon, Microsoft, Geek Squad, McAfee, Norton, and Paypal domains
No-cost cyber hygiene services: Cyber Hygiene Services and Ransomware Readiness Assessment.
See CISA Insights Mitigations and Hardening Guidance for MSPs and Small- and Mid-sized Businesses for guidance on hardening MSP and customer infrastructure.
U.S. DIB sector organizations may consider signing up for the NSA Cybersecurity Collaboration Center’s DIB Cybersecurity Service Offerings, including Protective Domain Name System services, vulnerability scanning, and threat intelligence collaboration for eligible organizations. For more information on how to enroll in these services, email dib_defense@cyber.nsa.go…
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Dec 7, 2022
CISA Alert AA22-335A – #StopRansomware: Cuba Ransomware
The FBI and CISA are releasing this alert to disseminate known Cuba Ransomware Group indicators of compromise and TTPs identified through FBI investigations.
FBI and CISA would like to thank BlackBerry, ESET, The National Cyber-Forensics and Training Alliance (NCFTA), and Palo Alto Networks for their contributions to this CSA.
AA22-335A Alert, Technical Details, and Mitigations
For a downloadable copy of IOCs, see AA22-335A.stix
Stopransomware.gov is a whole-of-government approach that gives one central location for ransomware resources and alerts.
Resource to mitigate a ransomware attack: CISA-Multi-State Information Sharing and Analysis Center (MS-ISAC) Joint Ransomware Guide.
No-cost cyber hygiene services: Cyber Hygiene Services and Ransomware Readiness Assessment.
U.S. DIB sector organizations may consider signing up for the NSA Cybersecurity Collaboration Center’s DIB Cybersecurity Service Offerings, including Protective Domain Name System services, vulnerability scanning, and…
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Nov 17, 2022
CISA Alert AA22-321A – #StopRansomware: Hive Ransomware.
The FBI, CISA, and the Department of Health and Human Services are releasing this alert to disseminate known Hive Ransomware Group indicators of compromise and TTPs identified through FBI investigations.
AA22-321A Alert, Technical Details, and Mitigations
Stopransomware.gov is a whole-of-government approach that gives one central location for ransomware resources and alerts.
Resource to mitigate a ransomware attack: CISA-Multi-State Information Sharing and Analysis Center (MS-ISAC) Joint Ransomware Guide.
No-cost cyber hygiene services: Cyber Hygiene Services and Ransomware Readiness Assessment.
U.S. DIB sector organizations may consider signing up for the NSA Cybersecurity Collaboration Center’s DIB Cybersecurity Service Offerings, including Protective Domain Name System services, vulnerability scanning, and threat intelligence collaboration for eligible organizations. For more information on how to enroll in these services, email dib_defense@cyber.nsa.gov
To report incidents and…
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Nov 16, 2022
CISA Alert AA22-320A – Iranian government-sponsored APT actors compromise federal network, deploy crypto miner, credential harvester.
From mid-June through mid-July 2022, CISA conducted an incident response engagement at a Federal Civilian Executive Branch organization where CISA observed suspected advanced persistent threat activity. In the course of incident response activities, CISA determined that cyber threat actors exploited the Log4Shell vulnerability in an unpatched VMware Horizon server, installed XMRig crypto mining software, moved laterally to the domain controller, compromised credentials, and then implanted Ngrok reverse proxies on several hosts to maintain persistence.
AA22-320A Alert, Technical Details, and Mitigations
Malware Analysis Report MAR 10387061-1.v1
For more information on Iranian government-sponsored Iranian malicious cyber activity, see CISA’s Iran Cyber Threat Overview and Advisories webpage and FBI’s Iran Threats webpage.
CISA offers several no-cost scanning and testing services to help organizations reduce their exposure to threats by taking a proactive approach to mitigating attack…
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Oct 23, 2022
CISA Alert AA22-294A – #StopRansomware: Daixin Team.
FBI, CISA, and Department of Health and Human Services are releasing this joint advisory to provide information on the Daixin Team, a cybercrime group that is actively targeting U.S. businesses, predominantly in the Healthcare and Public Health Sector.
AA22-294A Alert, Technical Details, and Mitigations
Stopransomware.gov is a whole-of-government approach that gives one central location for ransomware resources and alerts.
Resource to mitigate a ransomware attack: CISA-Multi-State Information Sharing and Analysis Center (MS-ISAC) Joint Ransomware Guide.
Ongoing Threat Alerts and Sector alerts are produced by the Health Sector Cybersecurity Coordination Center (HC3) and can be found at hhs.gov/HC3
For additional best practices for Healthcare cybersecurity issues see the HHS 405(d) Aligning Health Care Industry Security Approaches at 405d.hhs.gov
CISA offers several no-cost scanning and testing services to help organizations reduce their exposure to threats by taking a proactive approa…
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Oct 7, 2022
CISA Alert AA22-279A – Top CVEs actively exploited by People’s Republic of China state-sponsored cyber actors.
This joint Cybersecurity Advisory provides the top CVEs used by the People’s Republic of China state-sponsored cyber actors. PRC cyber actors continue to exploit these known vulnerabilities and use publicly available tools to target networks of interest. PRC state-sponsored cyber actors have actively targeted U.S. and allied networks as well as software and hardware companies to steal intellectual property and develop access into sensitive networks.
AA22-279A Alert, Technical Details, and Mitigations
For more information on PRC state-sponsored malicious cyber activity, see CISA’s China Cyber Threat Overview and Advisories webpage, FBI’s Industry Alerts, and NSA’s Cybersecurity Advisories & Guidance.
People’s Republic of China State-Sponsored Cyber Actors Exploit Network Providers and Devices
CISA offers several no-cost scanning and testing services to help organizations reduce their exposure to threats by taking a proactive approach to mitigating attack vectors. See www.cis…
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Oct 4, 2022
CISA Alert AA22-277A – Impacket and exfiltration tool used to steal sensitive information from defense industrial base organization.
From November 2021 through January 2022, the CISA responded to APT activity against a Defense Industrial Base organization’s enterprise network. During incident response activities, CISA discovered that multiple APT groups compromised the organization’s network, and some APT actors had long-term access to the environment. APT actors used an open-source toolkit called Impacket to gain their foothold within the environment and further compromise the network, and also used a custom data exfiltration tool, CovalentStealer, to steal the victim’s sensitive data.
AA22-277A Alert, Technical Details, and Mitigations
CISA Cyber Hygiene Services
Malware Analysis Report (MAR)-10365227-1.stix
MAR-10365227-2.stix
MAR-10365227-3.stix
CISA offers several no-cost scanning and testing services to help organizations reduce their exposure to threats by taking a proactive approach to mitigating attack vectors. See www.cisa.gov/cyber-hygiene-services
U.S. DIB sector organizations may consider signing…
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Sep 22, 2022
CISA Alert AA22-265A – Control system defense: know the opponent.
This alert builds on previous NSA and CISA guidance to stop malicious ICS activity and reduce OT exposure. The alert documentation linked in the show notes describes TTPs that malicious actors use to compromise OT/ICS assets. It also recommends mitigations that owners and operators can use to defend their systems from each of the listed TTPs. NSA and CISA encourage OT and ICS owners and operators to apply the recommendations in this documentation.
AA22-265A Alert, Technical Details, and Mitigations
NSA and CISA guidance to stop malicious ICS activity and reduce OT exposure
For NSA client requirements or general cybersecurity inquiries, contact Cybersecurity_Requests@nsa.gov. To report incidents and anomalous activity or to request incident response resources or technical assistance related to these threats, contact CISA at report@cisa.gov.
To report incidents and anomalous activity or to request incident response resources or technical assistance related to these threats, contact C…
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Sep 22, 2022
CISA Alert AA22-264A – Iranian state actors conduct cyber operations against the government of Albania.
In July 2022, Iranian state cyber actors—identifying as “HomeLand Justice”—launched a destructive cyber attack against the Government of Albania which rendered websites and services unavailable. An FBI investigation indicates Iranian state cyber actors acquired initial access to the victim’s network approximately 14 months before launching the destructive cyber attack, which included a ransomware-style file encryptor and disk wiping malware.
AA22-264A Alert, Technical Details, and Mitigations
CISA’s free Cyber Hygiene Services (CyHy)
CISA’s zero–trust principles and architecture.
Iran Cyber Threat Overview and Advisories.
All organizations should report incidents and anomalous activity to CISA’s 24/7 Operations Center at central@cisa.dhs.gov or (888) 282-0870 and to the FBI via your local FBI field office or the FBI’s 24/7 CyWatch at (855) 292-3937 or CyWatch@fbi.gov.
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Sep 15, 2022
CISA Alert AA22-257A – Iranian Islamic Revolutionary Guard Corps-Affiliated Cyber Actors Exploiting Vulnerabilities for Data Extortion and Disk Encryption for Ransom Operations.
This joint Cybersecurity Advisory highlights continued malicious cyber activity by advanced persistent threat actors affiliated with the Iranian Government’s Islamic Revolutionary Guard Corps. The IRGC-affiliated actors are actively targeting a broad range of entities, including entities across multiple U.S. critical infrastructure sectors as well as Australian, Canadian, and United Kingdom organizations.
AA22-257A Alert, Technical Details, and Mitigations
AA22-257A.stix
CISA’s Iran Cyber Threat Overview and Advisories
FBI’s Iran Threat webpage.
Iranian Government-Sponsored APT Cyber Actors Exploiting Microsoft Exchange and Fortinet Vulnerabilities in Furtherance of Malicious Activities
Technical Approaches to Uncovering and Remediating Malicious Activity
All organizations should report incidents and anomalous activity to CISA’s 24/7 Operations Center at central@cisa.dhs.gov or (888) 282-0870 and to the FBI via your local FBI field office or the FBI’s 24/7 CyWatch at (855)…
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Sep 6, 2022
CISA Alert AA22-249A – #StopRansomware: Vice Society.”
CISA, the FBI, and the Multi-State Information Sharing and Analysis Center, or MS ISAC, are releasing this advisory to disseminate indicators of compromise and TTPs associated with Vice Society actors and their ransomware campaigns. The FBI, CISA, and the MS-ISAC have recently observed Vice Society actors disproportionately targeting the education sector with ransomware attacks.
AA22-249A Alert, Technical Details, and Mitigations
Stopransomware.gov is a whole-of-government approach that gives one central location for ransomware resources and alerts.
Resource to mitigate a ransomware attack: CISA-Multi-State Information Sharing and Analysis Center (MS-ISAC) Joint Ransomware Guide.
No-cost cyber hygiene services: Cyber Hygiene Services and Ransomware Readiness Assessment.
All organizations should report incidents and anomalous activity to CISA’s 24/7 Operations Center at central@cisa.dhs.gov or (888) 282-0870 and to the FBI via your local FBI field office or the FBI’s 24/7 CyWatch at…
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Aug 17, 2022
CISA Alert AA22-228A – Threat actors exploiting multiple CVEs against Zimbra Collaboration suite.
CISA and the Multi-State Information Sharing & Analysis Center, or MS-ISAC are publishing this joint Cybersecurity Advisory in response to active exploitation of multiple Common Vulnerabilities and Exposures against Zimbra Collaboration Suite, an enterprise cloud-hosted collaboration software and email platform.
AA22-228A Alert, Technical Details, and Mitigations
Volexity’s Mass Exploitation of (Un)authenticated Zimbra RCE: CVE-2022-27925
Hackers are actively exploiting password-stealing flaw in Zimbra
CISA adds Zimbra email vulnerability to its exploited vulnerabilities catal…
CVE-2022-27925 detail
Mass exploitation of (un)authenticated Zimbra RCE: CVE-2022-27925
CVE-2022-37042 detail
Authentication bypass in MailboxImportServlet vulnerability
CVE-2022-30333 detail
UnRAR vulnerability exploited in the wild, likely against Zimbra servers
Zimbra Collaboration Kepler 9.0.0 patch 25 GA release
Zimbra UnRAR path traversal
Operation EmailThief: Active exploitation of zero-day XSS vulner…
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Aug 11, 2022
CISA Alert AA22-223A – #StopRansomware: Zeppelin Ransomware.
Zeppelin ransomware functions as a ransomware-as-a-service (RaaS), and since 2019, actors have used this malware to target a wide range of businesses and critical infrastructure organizations. Actors use remote desktop protocol (RDP), SonicWall firewall vulnerabilities, and phishing campaigns to gain initial access to victim networks and then deploy Zeppelin ransomware to encrypt victims’ files.
AA22-223A Alert, Technical Details, and Mitigations
Zeppelin malware YARA signature
What is Zeppelin Ransomware? Steps to Prepare, Respond, and Prevent Infection
Stopransomware.gov is a whole-of-government approach that gives one central location for ransomware resources and alerts.
No-cost cyber hygiene services: Cyber Hygiene Services and Ransomware Readiness Assessment.
This joint Cybersecurity Advisory is part of an ongoing #StopRansomware effort to publish advisories for network defenders that detail various ransomware variants and ransomware threat actors. These #StopRansomware advisori…
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Aug 4, 2022
CISA Alert AA22-216A – 2021 top malware strains.
This joint Cybersecurity Advisory was coauthored by CISA and the Australian Cyber Security Centre, or ACSC. This advisory provides details on the top malware strains observed in 2021.
AA22-216A Alert, Technical Details, and Mitigations
For alerts on malicious and criminal cyber activity, see the FBI Internet Crime Complaint Center webpage.
For more information and resources on protecting against and responding to ransomware, refer to StopRansomware.gov, a centralized, U.S. Government webpage providing ransomware resources and alerts.
The ACSC recommends organizations implement eight essential mitigation strategies from the ACSC’s Strategies to Mitigate Cyber Security Incidents as a cybersecurity baseline. These strategies, known as the “Essential Eight,” make it much harder for adversaries to compromise systems.
Refer to the ACSC’s practical guides on how to protect yourself against ransomware attacks and what to do if you are held at ransom at cyber.gov.au.
All organizations s…
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Jul 18, 2022
Update 1 to CISA Alert AA22-174A – Malicious cyber actors continue to exploit Log4Shell in VMware Horizon systems.
CISA and the US Coast Guard Cyber Command are releasing this joint Cybersecurity Advisory to warn network defenders that cyber threat actors, including state-sponsored APT actors, have continued to exploit CVE-2021-44228 (Log4Shell) in VMware Horizon and Unified Access Gateway servers to obtain initial access to organizations that did not apply available patches or workarounds.
AA22-174A Alert, Technical Details, and Mitigations
(Update July 18, 2022) Malware Analysis Report 10382580-2 stix
Malware Analysis Report 10382254-1 stix
Malware Analysis Report 10382580-1 stix
CISA’s Apache Log4j Vulnerability Guidance webpage
Joint CSA Mitigating Log4Shell and Other Log4j-Related Vulnerabilities
CISA’s database of known vulnerable services on the CISA GitHub page
See National Security Agency (NSA) and Australian Signals Directorate (ASD) guidance Block and Defend Web Shell Malware for additional guidance on hardening internet-facing systems.
All organizations should report incidents and a…
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Jul 6, 2022
CISA Alert AA22-187A – North Korean state-sponsored cyber actors use Maui ransomware to target the healthcare and public health sector.
The FBI, CISA, and the Department of the Treasury are releasing this joint Cybersecurity Advisory to provide information on Maui ransomware, which has been used by North Korean state-sponsored cyber actors since at least May 2021 to target Healthcare and Public Health Sector organizations.
AA22-187A Alert, Technical Details, and Mitigations
Stairwell Threat Report: Maui Ransomware
North Korea Cyber Threat Overview and Advisories
Updated Advisory on Potential Sanctions Risks for Facilitating Ransomware Payments
National Conference of State Legislatures: Security Breach Notification Laws
Health Breach Notification Rule
Protecting Sensitive and Personal Information from Ransomware-Caused Data Breaches
StopRansomware.gov
CISA-Multi-State Information Sharing and Analysis Center (MS-ISAC) Joint Ransomware Guide
All organizations should report incidents and anomalous activity to CISA’s 24/7 Operations Center at central@cisa.dhs.gov or (888) 282-0870 and to the FBI via your local FBI field…
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Jun 30, 2022
CISA Alert AA22-181A – #StopRansomware: MedusaLocker.
CISA, the FBI, the Department of the Treasury, and the Financial Crimes Enforcement Network are releasing this alert to provide information on MedusaLocker ransomware. Observed as recently as May 2022, MedusaLocker actors predominantly rely on vulnerabilities in Remote Desktop Protocol to access victims’ networks.
AA22-181A Alert, Technical Details, and Mitigations
Stop Ransomware
CISA Ransomware Guide
CISA No-cost Ransomware Services
All organizations should report incidents and anomalous activity to CISA’s 24/7 Operations Center at central@cisa.dhs.gov or (888) 282-0870 and to the FBI via your local FBI field office or the FBI’s 24/7 CyWatch at (855) 292-3937 or CyWatch@fbi.gov.
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Jun 24, 2022
CISA Alert AA22-174A – Malicious cyber actors continue to exploit Log4Shell in VMware Horizon systems.
CISA and the US Coast Guard Cyber Command are releasing this joint Cybersecurity Advisory to warn network defenders that cyber threat actors, including state-sponsored APT actors, have continued to exploit CVE-2021-44228 (Log4Shell) in VMware Horizon and Unified Access Gateway servers to obtain initial access to organizations that did not apply available patches or workarounds.
AA22-174A Alert, Technical Details, and Mitigations
Malware Analysis Report 10382254-1 stix
Malware Analysis Report 10382580-1 stix
CISA’s Apache Log4j Vulnerability Guidance webpage
Joint CSA Mitigating Log4Shell and Other Log4j-Related Vulnerabilities
CISA’s database of known vulnerable services on the CISA GitHub page
See National Security Agency (NSA) and Australian Signals Directorate (ASD) guidance Block and Defend Web Shell Malware for additional guidance on hardening internet-facing systems.
All organizations should report incidents and anomalous activity to CISA’s 24/7 Operations Center at central…
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Jun 8, 2022
CISA Alert AA22-158A – People’s Republic of China state-sponsored cyber actors exploit network providers and devices.
This joint Cybersecurity Advisory describes the ways in which People’s Republic of China state-sponsored cyber actors continue to exploit publicly known vulnerabilities in order to establish a broad network of compromised global infrastructure. These actors use the network to exploit a wide variety of targets worldwide, including public and private sector organizations.
AA22-158A Alert, Technical Details, and Mitigations
Refer to China Cyber Threat and Advisories, Internet Crime Complaint Center, and NSA Cybersecurity Guidance for previous reporting on People’s Republic of China state-sponsored malicious cyber activity.
US government and critical infrastructure organizations should consider signing up for CISA’s cyber hygiene services, including vulnerability scanning, to help reduce exposure to threats.
US Defense Industrial Base organizations should consider signing up for the NSA Cybersecurity Collaboration Center’s DIB Cybersecurity Service Offerings, including Protective D…
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Jun 8, 2022
Update 1 to CISA Alert AA22-138B – Threat actors chaining unpatched VMware vulnerabilities for full system control.
Malicious cyber actors are exploiting multiple critical vulnerabilities in VMware products. Successful exploitation permits malicious actors to trigger a server-side template injection that may result in remote code execution or escalation of privileges to root level access. CISA has updated this alert with additional indicators of compromise, detection signatures, and threat actor TTPs from trusted third parties to assist administrators with detecting and responding to this activity.
AA22-138B Alert, Technical Details, and Mitigations
AA22-138B.stix
Emergency Directive 22-03 Mitigate VMware Vulnerabilities
VMware Security Advisory VMSA-2022-0011
VMware Security Advisory VMSA-2022-0014
Threat Brief: VMware Vulnerabilities Exploited in the Wild (CVE-2022-22954 and Others)
All organizations should report incidents and anomalous activity to CISA’s 24/7 Operations Center at central@cisa.dhs.gov or (888) 282-0870 and to the FBI via your local FBI field office or the FBI’s 24/7 CyWatch a…
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Jun 1, 2022
CISA Alert AA22-152A – Karakurt data extortion group.
The Federal Bureau of Investigation (FBI), the Cybersecurity and Infrastructure Security Agency (CISA), the Department of the Treasury (Treasury), and the Financial Crimes Enforcement Network (FinCEN) are releasing this joint Cybersecurity Advisory to provide information about the Karakurt data extortion group, also known as the Karakurt Team and Karakurt Lair. Karakurt actors have employed a variety of TTPs, creating significant challenges for defense and mitigation. Karakurt victims have not reported encryption of compromised machines or files; rather, Karakurt actors claim to steal data and threaten to auction it or release it to the public unless they receive payment.
AA22-152A Alert, Technical Details, and Mitigations
CISA-Multi-State Information Sharing and Analysis Center (MS-ISAC) Joint Ransomware Guide
Data Integrity: Detecting and Responding to Ransomware and Other Destructive Events. Stopransomware.gov
CISA's Ransomware Readiness Assessment
CISA's cyber hygiene services
Fi…
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May 20, 2022
CISA Alert AA22-138B – Threat actors chaining unpatched VMware vulnerabilities for full system control.
CISA is releasing this cybersecurity advisory to warn organizations that malicious cyber actors are exploiting CVE-2022-22954 and CVE-2022-22960. These vulnerabilities affect versions of VMware products. Successful exploitation permits malicious actors to trigger a server-side template injection that may result in remote code execution or escalation of privileges to root level access. Based on this activity, CISA expects malicious cyber actors to quickly develop a capability to exploit newly released VMware vulnerabilities CVE-2022-22972 and CVE-2022-22973 in the same impacted VMware products.
AA22-138B Alert, Technical Details, and Mitigations
AA22-138B.stix
Emergency Directive 22-03 Mitigate VMware Vulnerabilities
VMware Security Advisory VMSA-2022-0011
VMware Security Advisory VMSA-2022-0014
All organizations should report incidents and anomalous activity to CISA’s 24/7 Operations Center at central@cisa.dhs.gov or (888) 282-0870 and to the FBI via your local FBI field office or th…
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May 18, 2022
CISA Alert AA22-138A – Threat Actors Exploiting F5 BIG-IP CVE-2022-1388.
CISA and the Multi-State Information Sharing & Analysis Center (MS-ISAC), are releasing this joint Cybersecurity Advisory in response to active exploitation of CVE-2022-1388. This vulnerability is a critical iControl REST authentication bypass vulnerability affecting multiple versions of F5 Networks BIG-IP.
AA22-138A Alert, Technical Details, and Mitigations
F5 Security Advisory K23605346 and indicators of compromise
F5 guidance K11438344 for remediating a compromise
Emerging Threats suricata signatures
Palo Alto Networks Unit 42 Threat Brief: CVE-2022-1388. This brief includes indicators of compromise.
Cisco Talos Intelligence Group - Comprehensive Threat Intelligence: Threat Advisory: Critical F5 BIG-IP Vulnerability. This blog includes indicators of compromise. Note: due to the urgency to share this information, CISA and MS-ISAC have not yet validated this content.
Randori’s bash script. This script can be used to identify vulnerable instances of BIG-IP. Note: MS-ISAC has ve…
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May 17, 2022
CISA Alert AA22-137A – Weak security controls and practices routinely exploited for initial access.
This joint cybersecurity advisory was coauthored by the cybersecurity authorities of the US, Canada, New Zealand, the Netherlands, and the UK. Cyber actors routinely exploit poor security configurations, weak controls, and other poor cyber hygiene practices to gain initial access or as part of other tactics to compromise a victim’s system. This joint Cybersecurity Advisory identifies commonly exploited controls and practices, and includes best practices to mitigate these risks.
AA22-137A Alert, Technical Details, and Mitigations
White House Executive Order on Improving the Nation’s Cybersecurity
NCSC-NL Factsheet: Prepare for Zero Trust
NCSC-NL Guide to Cyber Security Measures
N-able Blog: Intrusion Detection System (IDS): Signature vs. Anomaly-Based
NCSC-NL Guide to Cyber Security Measures
National Institute of Standards and Technology SP 800-123 – Keeping Servers Secured
NCSC-UK Guidance – Phishing Attacks: Defending Your Organisation
Open Web Application Security Project (…
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May 12, 2022
CISA Alert AA22-131A – Protecting against cyber threats to managed service providers and their customers.
The cybersecurity authorities of the UK, Australia, Canada, New Zealand, and the US have observed a recent increase in malicious cyber activity against managed service providers (MSPs). Allied cybersecurity authorities expect state-sponsored cyber actors to increase their targeting of MSPs in an attempt to exploit provider-customer trust relationships. This advisory includes security guidance tailored for both MSPs and their customers.
AA22-131A Alert, Technical Details, and Mitigations
Technical Approaches to Uncovering and Remediating Malicious Activity
Mitigations and Hardening Guidance for MSPs and Small- and Mid-sized Businesses
APTs Targeting IT Service Provider Customers
ACSC's Managed Service Providers: How to manage risk to customer networks
Global Targeting of Enterprise Managed Service Providers
Cyber Security Considerations for Consumers of Managed Services
How to Manage Your Security When Engaging a Managed Service Provider
Kaseya Ransomware Attack: Guidance for Affe…
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May 10, 2022
Update 1 to CISA Alert AA22-076A – Strengthening cybersecurity of SATCOM network providers and customers.
The US government attributes cyberattacks on satellite communication (SATCOM) networks to Russian state-sponsored malicious cyber actors. The FBI and CISA are aware of possible threats to US and international SATCOM networks. Intrusions into SATCOM networks could create risk in customer environments.
AA22-076A Alert, Technical Details, and Mitigations
Attribution of Russia’s Malicious Cyber Activity Against Ukraine
CISA Shields Up Technical Guidance
NSA Cybersecurity Advisory: Protecting VSAT Communications
NSA Cybersecurity Tech-Rep: Network Infrastructure Security Guidance
Annual Threat Assessment of the U.S. Intelligence Community, February 2022
CISA Tip: Choosing and Protecting Passwords
CISA Capacity Enhancement Guide: Implementing Strong Authentication
All organizations should report incidents and anomalous activity to CISA’s 24/7 Operations Center at central@cisa.dhs.gov or (888) 282-0870 and to the FBI via your local FBI field office or the FBI’s 24/7 CyWatch at (855)…
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Apr 27, 2022
CISA Alert AA22-117A – 2021 top routinely exploited vulnerabilities.
This joint Cybersecurity Advisory was coauthored by cybersecurity authorities of the US, Australia, Canada, New Zealand, and the UK. This advisory provides details on the top 15 Common Vulnerabilities and Exposures (CVEs) routinely exploited by malicious cyber actors in 2021, as well as other CVEs frequently exploited.
AA22-117A Alert, Technical Details, and Mitigations
Top 15 CVEs Routinely Exploited in 2020
Risk Considerations for Managed Service Provider Customers
Mitigations and Hardening Guidance for MSPs and Small- and Mid-sized Businesses
How to Manage Your Security When Engaging a Managed Service Provider
CISA Capacity Enhancement Guide – Implementing Strong Authentication
Implementing Multi-Factor Authentication
CISA’s Apache Log4j Vulnerability Guidance
All organizations should report incidents and anomalous activity to CISA’s 24/7 Operations Center at central@cisa.dhs.gov or (888) 282-0870 and to the FBI via your local FBI field office or the FBI’s 24/7 CyWatch at (8…
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Apr 20, 2022
CISA Alert AA22-110A – Russian state-sponsored and criminal cyber threats to critical infrastructure.
The allied cybersecurity authorities of the United States, Australia, Canada, New Zealand, and the United Kingdom are releasing this joint Cybersecurity Advisory (CSA). The intent of this joint CSA is to warn organizations that Russia’s invasion of Ukraine could expose organizations both within and beyond the region to increased malicious cyber activity. This activity may occur as a response to the unprecedented economic costs imposed on Russia as well as materiel support provided by the United States and US allies and partners.
AA22-110A Alert, Technical Details, and Mitigations.
March 21, 2022, Statement by U.S. President Biden.
CISA Shields Up Technical Guidance.
Mitigating Russian State-Sponsored Cyber Threats to US Critical Infrastructure.
Joint Cyber Defense Collaborative
Australian Cyber Security Centre’s (ACSC) Advisory.
Canadian Centre for Cyber Security (CCCS) Cyber Threat Bulletin.
National Cyber Security Centre New Zealand (NZ NCSC) General Security Advisory.
United Ki…
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Apr 18, 2022
CISA Alert AA22-108A – TraderTraitor: North Korean state-sponsored APT targets blockchain companies.
This joint Cybersecurity Advisory highlights the cyber threat associated with cryptocurrency thefts and tactics used by a North Korean state-sponsored APT group since at least 2020. This group is commonly tracked by the cybersecurity industry as Lazarus Group, APT38, BlueNoroff, and Stardust Chollima. As of April 2022, North Korea’s Lazarus Group has targeted various firms, entities, and exchanges in the blockchain and cryptocurrency industry using spearphishing campaigns and malware to steal crypto. These actors will likely continue exploiting vulnerabilities of cryptocurrency technology firms, gaming companies, and exchanges to generate and launder funds to support the North Korean regime.
AA22-108A Alert, Technical Details, and Mitigations
CISA North Korea Threat Information
AppleJeus: Analysis of North Korea’s Cryptocurrency Malware
HIDDEN COBRA – FASTCash Campaign
FASTCash 2.0: North Korea’s BeagleBoyz Robbing Banks
All organizations should report incidents and anomalo…
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Apr 13, 2022
CISA Alert AA22-103A – APT Cyber Tools Targeting ICS/SCADA Devices.
The DOE, CISA, NSA, and the FBI are releasing this joint Cybersecurity Advisory to warn that certain APT actors have demonstrated the ability to gain full system access to multiple ICS/SCADA devices, including: Schneider Electric programmable logic controllers, OMRON Sysmac NEX programmable logic controllers, and Open Platform Communications Unified Architecture servers. DOE, CISA, NSA, and the FBI urge critical infrastructure organizations, especially Energy Sector organizations, to implement the detection and mitigation recommendations provided in this CSA to detect potential malicious APT activity and harden their ICS/SCADA devices.
The DOE, CISA, NSA, and the FBI would like to thank Dragos, Mandiant, Microsoft, Palo Alto Networks, and Schneider Electric for their contributions to this joint CSA.
AA22-103A Alert, Technical Details, and Mitigations
Layering Network Security Through Segmentation
Stop Malicious Cyber Activity Against Connected Operational Technology
NSA and CISA Reco…
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Mar 31, 2022
CISA Alert AA22-074A – Russian state-sponsored cyber actors gain network access by exploiting default MFA protocols and “PrintNightmare” vulnerability.
The FBI and CISA are releasing this joint Cybersecurity Advisory to warn organizations that Russian state-sponsored cyber actors have gained network access through exploitation of default MFA protocols and a known vulnerability. As early as May 2021, Russian state-sponsored cyber actors took advantage of a misconfigured account set to default MFA protocols at a non-governmental organization (NGO), allowing them to enroll a new device for MFA and access the victim network. The actors then exploited a critical Windows Print Spooler vulnerability, “PrintNightmare” (CVE-2021-34527) to run arbitrary code with system privileges. Russian state-sponsored cyber actors successfully exploited the vulnerability while targeting an NGO using Cisco’s Duo MFA, enabling access to cloud and email accounts for document exfiltration. Alert, Technical Details, and Mitigations Structured Threat Information Expression (STIX) Russian Cyber Threat Information Shields Up Technical Guidance All organizatio…
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Mar 31, 2022
CISA Alert AA22-057A – Destructive malware targeting organizations in Ukraine.
This Joint Cybersecurity Advisory between CISA and the FBI provides technical information on WhisperGate and HermeticWiper malware as well as open-source indicators of compromise for organizations to detect and prevent the malware. Additionally, this alert provides recommended guidance and considerations for organizations to address as part of network architecture, security baseline, continuous monitoring, and incident response practices. Alert and technical details. Structured Threat Information Expression (STIX) All organizations should report incidents and anomalous activity to CISA’s 24/7 Operations Center at central@cisa.dhs.gov or (888) 282-0870 and to the FBI via your local FBI field office or the FBI’s 24/7 CyWatch at (855) 292-3937 or CyWatch@fbi.gov.
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Mar 31, 2022
CISA Alert AA22-083A – TTPs of Indicted State-Sponsored Russian Cyber Actors Targeting the Energy Sector.
This joint Cybersecurity Advisory provides information on multiple intrusion campaigns conducted by state-sponsored Russian cyber actors from 2011 to 2018 that targeted US and international Energy Sector organizations. CISA, the FBI, and DOE assess that state-sponsored Russian cyber operations continue to pose a threat to Energy Sector networks and are sharing this information in order to highlight TTPs used by adversaries to target Energy Sector organizations. They urge the Energy Sector and other critical infrastructure organizations to apply the recommendations listed in the Mitigations Section and Appendix Alpha of the alert documentation to reduce the risk of compromise. AA22-083A Alert, Technical Details, and Mitigations Russian Government Employees Charged for Hacking Critical Infrastructure CISA Shields Up Technical Guidance Mitigating Russian State-Sponsored Cyber Threats to US Critical Infrastructure Rewards for Justice Program All organizations should report incidents and a…
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Mar 31, 2022
CISA Alert AA22-076A – Strengthening Cybersecurity of SATCOM Network Providers and Customers.
The FBI and CISA are aware of possible threats to U.S. and international satellite communication (SATCOM) networks. Successful intrusions into SATCOM networks could create risk in SATCOM network providers’ customer environments. AA22-076A Alert, Technical Details, and Mitigations CISA Shields Up Technical Guidance NSA Cybersecurity Advisory: Protecting VSAT Communications NSA Cybersecurity Tech-Rep: Network Infrastructure Security Guidance Annual Threat Assessment of the U.S. Intelligence Community, February 2022 CISA Tip: Choosing and Protecting Passwords CISA Capacity Enhancement Guide: Implementing Strong Authentication All organizations should report incidents and anomalous activity to CISA’s 24/7 Operations Center at central@cisa.dhs.gov or (888) 282-0870 and to the FBI via your local FBI field office or the FBI’s 24/7 CyWatch at (855) 292-3937 or CyWatch@fbi.gov.
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Feb 24, 2022
CISA Alert AA22-055A – Iranian government-sponsored actors conduct cyber operations against global government and commercial networks.
The FBI, CISA, US Cyber Command Cyber National Mission Force, and the United Kingdom’s National Cyber Security Centre have observed a group of Iranian government-sponsored APT actors, known as MuddyWater, conducting cyber espionage and other malicious cyber operations targeting a range of government and private-sector organizations across sectors—including telecommunications, defense, local government, and oil and natural gas—in Asia, Africa, Europe, and North America.
AA22-055A Alert, Technical Details, and Mitigations
Malware Analysis Report
AA22-052A STIX and Malware Analysis STIX
Iran Cyber Threat Overview and Advisories
NCSC-UK MAR – Small Sieve
CNMF's press release – Iranian intel cyber suite of malware uses open source tools
All organizations should report incidents and anomalous activity to CISA’s 24/7 Operations Center at central@cisa.dhs.gov or (888) 282-0870 and to the FBI via your local FBI field office or the FBI’s 24/7 CyWatch at (855) 292-3937 or CyWatch@…
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Feb 23, 2022
CISA Alert AA22-054A – New Sandworm malware “Cyclops Blink” replaces VPNFilter.
CISA, the UK’s National Cyber Security Centre (NCSC), the National Security Agency (NSA), and the Federal Bureau of Investigation (FBI) have identified that the actor known as Sandworm or Voodoo Bear is using a new malware, Cyclops Blink. CISA, the NCSC, and the FBI have previously attributed the Sandworm actor to the Russian General Staff Main Intelligence Directorate’s Russian (GRU’s) Main Centre for Special Technologies.
AA22-054A Alert, Technical Details, and Mitigations
Cyclops Blink Malware Analysis Report
All organizations should report incidents and anomalous activity to CISA’s 24/7 Operations Center at central@cisa.dhs.gov or (888) 282-0870 and to the FBI via your local FBI field office or the FBI’s 24/7 CyWatch at (855) 292-3937 or CyWatch@fbi.gov.
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Feb 16, 2022
CISA Alert AA22-047A – Russian state-sponsored cyber actors target cleared defense contractor networks to obtain sensitive US defense information and technology.
CISA, the FBI, and NSA have observed Russian state-sponsored cyber actors regularly target US cleared defense contractors from at least January 2020 through February 2022. The actors have targeted both large and small defense contractors and subcontractors with varying levels of cybersecurity protocols and resources. These defense contractors support contracts for the US Department of Defense (DoD) and Intelligence Community in command, control, communications, and combat systems; intelligence, surveillance, reconnaissance, and targeting; weapons and missile development; vehicle and aircraft design; and software development, data analytics, computers, and logistics.
AA22-047A Alert, Technical Details, and Mitigations
Russia Cyber Threat Overview and Advisories
All organizations should report incidents and anomalous activity to CISA’s 24/7 Operations Center at central@cisa.dhs.gov or (888) 282-0870 and to the FBI via your local FBI field office or the FBI’s 24/7 CyWatch at (855) 2…
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Feb 9, 2022
CISA Alert AA22-040A – 2021 trends show increased globalized threat of ransomware.
In 2021, cybersecurity authorities in the United States, Australia, and the United Kingdom observed an increase in sophisticated, high-impact ransomware incidents against critical infrastructure organizations globally. The FBI, CISA, and NSA observed incidents involving ransomware against 14 of the 16 US critical infrastructure sectors, including the Defense Industrial Base, Emergency Services, Food and Agriculture, Government Facilities, and Information Technology Sectors.
AA22-040A Alert, Technical Details, and Mitigations
CISA’s Ransomware Readiness Assessment
CISA’s Cyber Hygiene Services
ACSC’s Strategies to Mitigate Cyber Security Incidents
All organizations should report incidents and anomalous activity to CISA’s 24/7 Operations Center at central@cisa.dhs.gov or (888) 282-0870 and to the FBI via your local FBI field office or the FBI’s 24/7 CyWatch at (855) 292-3937 or CyWatch@fbi.gov.
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Feb 1, 2022
CISA Cybersecurity Alerts - Trailer
Flash cybersecurity advisories from the US Government. These alerts provide timely technical and operational information, indicators of compromise, and mitigations for current major security threats, vulnerabilities, and exploits. These alerts have been edited and adapted for audio by The CyberWire as a public service.
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