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    Muddywater MuddyViper C2 User Agent

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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/)
    Tim Peck@timpeck
    •updated Dec 3, 2025•3•0•132

    Detects the unique User-Agent string "A WinHTTP Example Program/1.0" used by the MuddyViper backdoor for C2 communications, as reported in the MuddyWater campaign.

    YARA-L

    Tags

    T1071.001 - Web ProtocolsT1573.001 - Symmetric CryptographyG0069 - MuddyWaterTA0011 - Command and ControlNetwork ConnectionHTTP RequestNetwork GenericGeneric Network LogPalo Alto Panos FirewallFortinet Fortigate FirewallCheckpoint FirewallCisco Asa FirewallMUDDYWATERMUDDYVIPERMANGO SANDSTORMTA450NETWORKC2

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