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    All Detections

    JS.MonoGlyphRAT HTTP C2 Beaconing

    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 8, 2026•0•0•1

    Detects HTTP requests containing specific URL query parameter combinations (`ia=` and `df=`) or POST bodies containing `a=iz&b=`, which are unique to the JS.MonoGlyphRAT check-in and beaconing protocol.

    Sigma

    Tags

    T1071.001 - Web ProtocolsTA0011 - Command and ControlCommand ExecutionMalware DetectedProxy RequestWindowsNetwork GenericSquid ProxyHaproxyNginx HTTP ServerApache HTTP ServerGeneric Network Logattack.command-and-controlattack.t1071.001

    Found in

    • Analyzing JS.MonoGlyphRAT Threat to US EnterprisesLast updated Jun 2, 2026

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