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Detection rules › Sigma

Wmiexec Default Output File

Severity
critical
Author
Nasreddine Bencherchali (Nextron Systems)
Source
upstream

Detects the creation of the default output filename used by the wmiexec tool

MITRE ATT&CK coverage

TacticTechniques
ExecutionT1047 Windows Management Instrumentation

Event coverage

ProviderEvent IDTitle
Sysmon11FileCreate

Stages and Predicates

Stage 1: selection

or:
TargetFilename|re: 'C:\\__1\d{9}\.\d{1,7}$'
TargetFilename|re: 'D:\\__1\d{9}\.\d{1,7}$'
TargetFilename|re: '\\Windows\\__1\d{9}\.\d{1,7}$'

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
TargetFilenameregex_match
  • C:\\__1\d{9}\.\d{1,7}$
  • D:\\__1\d{9}\.\d{1,7}$
  • \\Windows\\__1\d{9}\.\d{1,7}$