CISA Alerts

Original release date: September 15, 2020 Summary This Alert uses the MITRE Adversarial Tactics, Techniques, and Common Knowledge (ATT&CK®) framework. See the ATT&CK for Enterprise framework for all referenced threat actor techniques. This product was written by the Cybersecurity and Infrastructure Security Agency (CISA) with contributions from the Federal Bureau of Investigation (FBI). CISA and …

AA20-259A: Iran-Based Threat Actor Exploits VPN Vulnerabilities Read More »

Original release date: September 14, 2020 Summary The Cybersecurity and Infrastructure Security Agency (CISA) has consistently observed Chinese Ministry of State Security (MSS)-affiliated cyber threat actors using publicly available information sources and common, well-known tactics, techniques, and procedures (TTPs) to target U.S. Government agencies. CISA has observed these—and other threat actors with varying degrees of …

AA20-258A: Chinese Ministry of State Security-Affiliated Cyber Threat Actor Activity Read More »

Original release date: September 1, 2020 Summary This joint advisory is the result of a collaborative research effort by the cybersecurity authorities of five nations: Australia,[1] Canada,[2] New Zealand,[3][4] the United Kingdom,[5] and the United States.[6] It highlights technical approaches to uncovering malicious activity and includes mitigation steps according to best practices. The purpose of …

AA20-245A: Technical Approaches to Uncovering and Remediating Malicious Activity Read More »

Original release date: August 26, 2020 Summary This Alert uses the MITRE Adversarial Tactics, Techniques, and Common Knowledge (ATT&CK®) framework. See the ATT&CK for Enterprise framework for all referenced threat actor techniques. This joint advisory is the result of analytic efforts among the Cybersecurity and Infrastructure Security Agency (CISA), the Department of the Treasury (Treasury), …

AA20-239A: FASTCash 2.0: North Korea's BeagleBoyz Robbing Banks Read More »

Original release date: August 14, 2020 Summary This Alert uses the MITRE Adversarial Tactics, Techniques, and Common Knowledge (ATT&CK®) framework. See the ATT&CK for Enterprise framework for all referenced threat actor techniques. The Cybersecurity and Infrastructure Security Agency (CISA) has observed cyber actors using emails containing a Microsoft Word document with a malicious Visual Basic …

AA20-227A: Phishing Emails Used to Deploy KONNI Malware Read More »

Original release date: August 12, 2020 Summary The Cybersecurity and Infrastructure Security Agency (CISA) is currently tracking an unknown malicious cyber actor who is spoofing the Small Business Administration (SBA) COVID-19 loan relief webpage via phishing emails. These emails include a malicious link to the spoofed SBA website that the cyber actor is using for …

AA20-225A: Malicious Cyber Actor Spoofing COVID-19 Loan Relief Webpage via Phishing Emails Read More »

Original release date: July 27, 2020 Summary This is a joint alert from the United States Cybersecurity and Infrastructure Security Agency (CISA) and the United Kingdom’s National Cyber Security Centre (NCSC). CISA and NCSC are investigating a strain of malware known as QSnatch, which attackers used in late 2019 to target Network Attached Storage (NAS) …

AA20-209A: Potential Legacy Risk from Malware Targeting QNAP NAS Devices Read More »

Original release date: July 24, 2020 Summary The Cybersecurity and Infrastructure Security Agency (CISA) is issuing this alert in response to recently disclosed exploits that target F5 BIG-IP devices that are vulnerable to CVE-2020-5902. F5 Networks, Inc. (F5) released a patch for CVE-2020-5902 on June 30, 2020.[1] Unpatched F5 BIG-IP devices are an attractive target …

AA20-206A: Threat Actor Exploitation of F5 BIG-IP CVE-2020-5902 Read More »

Original release date: July 23, 2020 Summary Note: This Activity Alert uses the MITRE Adversarial Tactics, Techniques, and Common Knowledge (ATT&CK®) framework. See the ATT&CK for Enterprise and ATT&CK for Industrial Control Systems frameworks for all referenced threat actor techniques and mitigations. Over recent months, cyber actors have demonstrated their continued willingness to conduct malicious cyber activity …

AA20-205A: NSA and CISA Recommend Immediate Actions to Reduce Exposure Across Operational Technologies and Control Systems Read More »

Original release date: July 16, 2020 Summary This Activity Alert uses the MITRE Adversarial Tactics, Techniques, and Common Knowledge (ATT&CK™) and Pre-ATT&CK frameworks. See the MITRE ATT&CK for Enterprise and Pre-ATT&CK frameworks for referenced threat actor techniques. Attributing malicious cyber activity that uses network tunneling and spoofing techniques to a specific threat actor is difficult. …

AA20-198A: Malicious Cyber Actor Use of Network Tunneling and Spoofing to Obfuscate Geolocation Read More »