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    PowerShell Base64 Encoded FromBase64String Cmdlet

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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/)
    SigmaHQ Detections@sigmaHQ
    •updated Apr 28, 2026•0•0•2

    Detects usage of a base64 encoded "FromBase64String" cmdlet in a process command line

    Sigma

    Tags

    TA0005 - StealthT1140 - Deobfuscate/Decode Files or InformationTA0002 - ExecutionT1059.001 - PowerShellProcess CreationWindowsWindows Sysmonattack.stealthattack.t1140attack.executionattack.t1059.001

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