Detection rules › Sigma

HackTool - Mimikatz Kirbi File Creation

Severity
critical
Author
Florian Roth (Nextron Systems), David ANDRE
Source
upstream

Detects the creation of files created by mimikatz such as ".kirbi", "mimilsa.log", etc.

MITRE ATT&CK coverage

TacticTechniques
Credential AccessT1558 Steal or Forge Kerberos Tickets

Event coverage

ProviderEvent IDTitle
Sysmon11FileCreate

Stages and Predicates

Stage 1: selection

or:
TargetFilename|endswith: .kirbi
TargetFilename|endswith: mimilsa.log

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
TargetFilenameends_with
  • .kirbi
  • mimilsa.log