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    OnyxC2 Stealer C2 Beaconing

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    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 15, 2026•1•0•19

    Detects HTTP network connections to the specific URI path and parameters used by the OnyxC2 stealer for C2 beaconing and data exfiltration.

    Sigma

    Tags

    T1071.001 - Web ProtocolsT1041 - Exfiltration Over C2 ChannelTA0011 - Command and ControlTA0010 - ExfiltrationNetwork ConnectionHTTP RequestData ExfiltrationNetwork GenericGeneric Network Logattack.command-and-controlattack.t1071.001attack.exfiltrationattack.t1041

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