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    Anomalous Command Execution Spawned by NetScaler Service Processes

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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/)
    Ibrahim Saud@tektrix
    •updated Sep 28, 2026•1•0•12

    Detects the spawning of shells, network utilities, or scripting interpreters from Citrix NetScaler processes (nsppe or httpd), which may indicate post-exploitation activity following an initial access vulnerability.

    Sigma

    Tags

    T1190 - Exploit Public-Facing ApplicationT1059.004 - Unix ShellTA0002 - ExecutionProcess CreationExploit AttemptLinuxLinux AuditdCVE-2026-88771attack.initial-accessattack.t1190

    Found in

    • Critical NetScaler RCE Exploitation CVE-2026-88771 SummaryLast updated 19 days ago
    • Critical Unpatched Citrix NetScaler RCE Zero-Days ExploitedLast updated 24 days ago
    • ICMacOS: Evolution of MaaS Infostealer to RATLast updated Oct 14, 2026
    • Citrix NetScaler Exploitation Analysis and Hunting GuideLast updated Oct 12, 2026
    • Citrix NetScaler Flaws Exploited as Zero-DayLast updated Sep 27, 2026

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