AA23-039A: ESXiArgs Ransomware Virtual Machine Recovery Guidance
Original release date: February 8, 2023 Summary The Cybersecurity and Infrastructure Security Agency (CISA) and the Federal Bureau of Investigation (FBI) are releasing this joint Cybersecurity Advisory (CSA) in response to the ongoing ransomware campaign, known as “ESXiArgs.” Malicious actors may be exploiting known vulnerabilities in VMware ESXi servers that are likely running unpatched and […]
AA23-025A: Protecting Against Malicious Use of Remote Monitoring and Management Software
Original release date: January 25, 2023 Summary The Cybersecurity and Infrastructure Security Agency (CISA), National Security Agency (NSA), and Multi-State Information Sharing and Analysis Center (MS-ISAC) (hereafter referred to as the “authoring organizations”) are releasing this joint Cybersecurity Advisory (CSA) to warn network defenders about malicious use of legitimate remote monitoring and management (RMM) software. […]
AA22-335A: #StopRansomware: Cuba Ransomware
Original release date: December 1, 2022 Summary Actions to take today to mitigate cyber threats from ransomware: • Prioritize remediating known exploited vulnerabilities. • Train users to recognize and report phishing attempts. • Enable and enforce phishing-resistant multifactor authentication. Note: This joint Cybersecurity Advisory (CSA) is part of an ongoing #StopRansomware effort to publish advisories […]
AA22-321A: #StopRansomware: Hive Ransomware
Original release date: November 17, 2022 Summary Actions to Take Today to Mitigate Cyber Threats from Ransomware: • Prioritize remediating known exploited vulnerabilities. • Enable and enforce multifactor authentication with strong passwords • Close unused ports and remove any application not deemed necessary for day-to-day operations. Note: This joint Cybersecurity Advisory (CSA) is part of […]
AA22-320A: Iranian Government-Sponsored APT Actors Compromise Federal Network, Deploy Crypto Miner, Credential Harvester
Original release date: November 16, 2022 Summary From mid-June through mid-July 2022, CISA conducted an incident response engagement at a Federal Civilian Executive Branch (FCEB) organization where CISA observed suspected advanced persistent threat (APT) activity. In the course of incident response activities, CISA determined that cyber threat actors exploited the Log4Shell vulnerability in an unpatched […]
AA22-294A: #StopRansomware: Daixin Team
Original release date: October 21, 2022 Summary Actions to take today to mitigate cyber threats from ransomware: • Install updates for operating systems, software, and firmware as soon as they are released. • Require phishing-resistant MFA for as many services as possible. • Train users to recognize and report phishing attempts. Note: This joint Cybersecurity […]