Original release date: February 24, 2022
Summary

Actions to Take Today to Protect Against Malicious Activity
* Search for indicators of compromise.
* Use antivirus software.
* Patch all systems.
* Prioritize patching known exploited vulnerabilities.
* Train users to recognize and report phishing attempts.
* Use multi-factor authentication.

Note: this advisory uses the MITRE Adversarial Tactics, Techniques, and Common Knowledge (ATT&CK®) framework, version 10. See the ATT&CK for Enterprise for all referenced threat actor tactics and techniques.

The Federal Bureau of Investigation (FBI), the Cybersecurity and Infrastructure Security Agency (CISA), the U.S. Cyber Command Cyber National Mission Force (CNMF), and the United Kingdom’s National Cyber Security Centre (NCSC-UK) have observed a group of Iranian government-sponsored advanced persistent threat (APT) actors, known as MuddyWater, conducting cyber espionage and other malicious cyber operations targeting a range of government and ...