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    StealC C2 HTTP POST to Hexadecimal PHP Endpoint

    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/)
    Duo Tech@duotech
    •updated Jun 30, 2026•1•0•1

    Detects HTTP POST requests directed at PHP script endpoints with randomized 16-32 character hexadecimal filenames, which is a known C2 communication pattern used by the StealC infostealer.

    Sigma

    Tags

    T1071.001 - Web ProtocolsT1041 - Exfiltration Over C2 ChannelTA0011 - Command and ControlTA0010 - ExfiltrationNetwork ConnectionHTTP RequestProxy RequestNetwork GenericSquid ProxyNginx HTTP ServerApache HTTP ServerGeneric Network Logattack.t1071.001attack.t1041malware.stealc

    Found in

    • Infostealers and Ransomware Ecosystem AnalysisLast updated Jun 30, 2026

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