huntrule

Suspicious PowerShell Base64 Encoded FromBase64String Cmdlet (via process_creation)

This rule detects use of a base64 encoded "FromBase64String" cmdlet in a process command line

SigmahighWindowsv1
Full detection rule

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Known false positives

  • Unknown

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.