Detection rules › Sigma

Potential PowerShell Console History Access Attempt via History File

Severity
medium
Author
Luc Génaux
Source
upstream

Detects potential access attempts to the PowerShell console history directly via history file (ConsoleHost_history.txt). This can give access to plaintext passwords used in PowerShell commands or used for general reconnaissance.

MITRE ATT&CK coverage

TacticTechniques
Credential AccessT1552.001 Unsecured Credentials: Credentials In Files

Event coverage

ProviderEvent IDTitle
Sysmon1Process creation
Security-Auditing4688A new process has been created.

Stages and Predicates

Stage 1: selection

or:
CommandLine|contains: '(Get-PSReadLineOption).HistorySavePath'
CommandLine|contains: ConsoleHost_history.txt

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

FieldKindValues
CommandLinematch
  • (Get-PSReadLineOption).HistorySavePath
  • ConsoleHost_history.txt