Suspicious AMSI decode attempt

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	1 Minute
Required Data	XDR Agent with eXtended Threat Hunting (XTH)
ATT&CK Tactic	Stealth (TA0005)
ATT&CK Technique	Deobfuscate/Decode Files or Information (T1140)
Severity	Informational

Description

A script has executed commands that can be used to decode commands or files.

Attacker's Goals

Avoid security mitigations and detections.

Investigative actions

Check the payload for malicious activity.