Unusual process accessed the PowerShell history file

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	1 Day
Required Data	XDR Agent
ATT&CK Tactic	Execution (TA0002)
ATT&CK Technique	Command and Scripting Interpreter: PowerShell (T1059.001)
Severity	Informational

Description

An abnormal process accessed the PowerShell console history file. This may be a sign of malicious PowerShell execution without directly invoking the powershell.exe binary.

Attacker's Goals

An attacker is attempting to run PowerShell without powershell.exe to evade detection.

Investigative actions

• Investigate the process and command line executed and whether it's benign or normal for this host.