Detection rules › Sigma

Renamed Whoami Execution

Severity
critical
Author
Florian Roth (Nextron Systems)
Source
upstream

Detects the execution of whoami that has been renamed to a different name to avoid detection

MITRE ATT&CK coverage

TacticTechniques
DiscoveryT1033 System Owner/User Discovery

Event coverage

ProviderEvent IDTitle
Sysmon1Process creation

Stages and Predicates

Stage 1: selection

OriginalFileName: whoami.exe

Stage 2: not filter

Image|endswith: '\whoami.exe'

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
Imageends_with
  • \whoami.exe corpus 18 (sigma 18)
OriginalFileNameeq
  • whoami.exe corpus 9 (sigma 9)