detection.wiki

Detection rules › Sigma

Recon Information for Export with PowerShell

Severity
medium
Author
frack113
Source
upstream

Once established within a system or network, an adversary may use automated techniques for collecting internal data

MITRE ATT&CK coverage

TacticTechniques
CollectionT1119 Automated Collection

Event coverage

ProviderEvent IDTitle
PowerShell4104Creating Scriptblock text (MessageNumber of MessageTotal).

Stages and Predicates

Stage 1: all of selection_action

or:
ScriptBlockText|contains: 'Get-ChildItem '
ScriptBlockText|contains: 'Get-Process '
ScriptBlockText|contains: 'Get-Service '

Stage 2: all of selection_redirect

ScriptBlockText|contains: '> $env:TEMP\'

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
ScriptBlockTextmatch
  • > $env:TEMP\
  • Get-ChildItem
  • Get-Process
  • Get-Service

Neighbors

Broader alternatives (more inclusive than this rule)

These rules match a superset of what this rule catches. They cover the same events plus more. Use them if you want wider coverage and can absorb more false positives.