Suspicious PowerShell Command Line

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	Low

Description

Attackers often leverage PowerShell one-liners, in which PowerShell is executed with suspicious options on the command line.

Attacker's Goals

Gain code execution on the host.

Investigative actions

Check whether the command line executed is benign or normal for the host and/or user performing it. For example, the command line may be an administrative script.