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MITRE Techniques
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Detects execution chains attributed to the Gamaredon threat group (also known as Shuckworm/ACTINIUM). The rule monitors Microsoft Office applications (Word, Excel, PowerPoint, Equation Editor) spawning cmd.exe or powershell.exe, where the child process contains suspicious patterns such as base64 blobs, script download commands, or known Gamaredon Ptero-toolset strings (PteroPaste, PteroVDoor, PteroDee). This activity is correlated with a network connection to non-Microsoft infrastructure within 60 seconds of process execution.
Detects sandbox evasion techniques used by the Gamaredon group's PteroSand malware. The rule monitors for WMI queries against system artifacts (Win32_ComputerSystem, Win32_BIOS, or Win32_VideoController) searching for virtualization-related strings (vmware, vbox, etc.), followed by a mandatory sleep/timeout delay of at least 60 seconds, and concludes by identifying the subsequent execution of a new process within the same lineage.