Double Extortion - Data Staging and C2 Communication
Detects patterns indicative of double extortion ransomware attacks, specifically the staging of large volumes of archived data followed by suspicious command and control (C2) communications. The rule identifies the creation, modification, or movement of multiple large archive files (RAR, 7z, ZIP, TAR, GZ, CAB) in common temporary or system directories, and correlates this activity with outbound network connections to known C2 indicators such as Tor/I2P/VPN/proxy services or non-RFC1918 IP addresses.
Microsoft Sentinel (KQL)
