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    RomCom Threat Group Activity Detection

    avatar
    GlassDiceBearhttps://www.dicebear.comhttps://creativecommons.org/publicdomain/zero/1.0/„Glass” (https://www.dicebear.com) by „DiceBear”, licensed under „CC0 1.0” (https://creativecommons.org/publicdomain/zero/1.0/)
    R W@shiftyroot
    •updated Aug 14, 2025•3•0•111

    This rule detects activities associated with the RomCom threat group, including exploitation of CVE-2025-8088 (WinRAR path traversal), COM hijacking for persistence, anti-analysis techniques (RecentDocs check), C2 communication, and suspicious WMIC execution, potentially linked to a Mythic agent.

    Splunk (SPL)

    Tags

    T1204.002 - Malicious FileT1566.001 - Spearphishing AttachmentT1546.015 - Component Object Model HijackingT1059 - Command and Scripting InterpreterT1497 - Virtualization/Sandbox EvasionT1071.001 - Web ProtocolsT1047 - Windows Management InstrumentationS0699 - MythicTA0002 - ExecutionTA0001 - Initial AccessTA0004 - Privilege EscalationTA0003 - PersistenceTA0005 - Defense EvasionTA0007 - DiscoveryTA0011 - Command and ControlFile CreationRegistry Key ModificationProcess CreationNetwork ConnectionCommand ExecutionWindowsWindows Sysmonspl

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