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    PowerShell Base64 Encoded FromBase64String Cmdlet

    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/)
    Yamato Security Hayabusa@YamatoSecurityHayabusa
    •updated Jun 24, 2025•0•10

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

    Sigma

    Tags

    TA0005 - Defense EvasionT1140 - Deobfuscate/Decode Files or InformationTA0002 - ExecutionT1059.001 - PowerShellProcess CreationWindowsattack.defense-evasionattack.t1140attack.executionattack.t1059.001sysmon

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