Sigma rule: Suspicious Execution of InstallUtil Without Log

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-d5caa3a911a2, updated 2022-02-04T00:00:00.000Z.

Rule

Title: Suspicious Execution of InstallUtil Without Log
Status: test
Level: medium
Author: frack113
Date: 2022-01-23
Modified: 2022-02-04
File: rules/windows/process_creation/proc_creation_win_instalutil_no_log_execution.yml
Commit: ccbb0369507f796db0b0ae6854c8a2be471b9d84

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

Log source

product: windows
category: process_creation

Detection

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

False positives (as the rule lists them)

Unknown

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_instalutil_no_log_execution.yml

Sources and licences

SigmaHQ
"Suspicious Execution of InstallUtil Without Log" by frack113 (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_instalutil_no_log_execution.yml.
Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License
Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: Suspicious Execution of InstallUtil Without Log",
entity page, dataset version ref-d5caa3a911a2, updated 2022-02-04T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/d042284c-a296-4988-9be5-f424fadcc28c (accessed 2026-11-03).
Underlying source: SigmaHQ rule d042284c-a296-4988-9be5-f424fadcc28c, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.