Detection rules › Sigma

Potential Commandline Obfuscation Using Escape Characters

Severity
medium
Author
juju4
Source
upstream

Detects potential commandline obfuscation using known escape characters

MITRE ATT&CK coverage

TacticTechniques
Defense EvasionT1140 Deobfuscate/Decode Files or Information

Event coverage

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

Stages and Predicates

Stage 1: selection

or:
CommandLine|contains: 'h"t"t"p'
CommandLine|contains: 'h^t^t^p'

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
CommandLinematch
  • h"t"t"p
  • h^t^t^p