Detection rules › Sigma

Suspicious Execution of InstallUtil Without Log

Severity
medium
Author
frack113
Source
upstream

Uses the .NET InstallUtil.exe application in order to execute image without log

Event coverage

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

Stages and Predicates

Stage 1: selection

CommandLine|contains: '/LogToConsole=false'
CommandLine|contains: '/logfile= '
Image|endswith: '\InstallUtil.exe'
Image|contains: 'Microsoft.NET\Framework'

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
  • /LogToConsole=false
  • /logfile=
Imageends_with
  • \InstallUtil.exe corpus 5 (sigma 5)
Imagematch
  • Microsoft.NET\Framework