Detection rules › Sigma

HackTool - SharpEvtMute Execution

Severity
high
Author
Florian Roth (Nextron Systems)
Source
upstream

Detects the use of SharpEvtHook, a tool that tampers with the Windows event logs

MITRE ATT&CK coverage

TacticTechniques
Defense EvasionT1562.002 Impair Defenses: Disable Windows Event Logging

Event coverage

ProviderEvent IDTitle
Sysmon1Process creation

Stages and Predicates

Stage 1: selection

or:
CommandLine|contains: '--Encoded --Filter \"'
CommandLine|contains: '--Filter "rule '
Description: SharpEvtMute
Image|endswith: '\SharpEvtMute.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
CommandLinematch
  • --Encoded --Filter \"
  • --Filter "rule
Descriptioneq
  • SharpEvtMute
Imageends_with
  • \SharpEvtMute.exe corpus 2 (sigma 2)