Detection rules › Sigma

Taskmgr as LOCAL_SYSTEM

Severity
high
Author
Florian Roth (Nextron Systems)
Source
upstream

Detects the creation of taskmgr.exe process in context of LOCAL_SYSTEM

MITRE ATT&CK coverage

TacticTechniques
Defense EvasionT1036 Masquerading

Event coverage

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

Stages and Predicates

Stage 1: selection

or:
User|contains: AUTHORI
User|contains: AUTORI
Image|endswith: '\taskmgr.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
  • \taskmgr.exe corpus 2 (sigma 2)
Usermatch
  • AUTHORI corpus 16 (sigma 16)
  • AUTORI corpus 16 (sigma 16)