Sigma rule: Suspicious Msbuild Execution By Uncommon Parent Process

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-bea3763e8e5e, updated 2022-11-17T00:00:00.000Z.

Rule

Title: Suspicious Msbuild Execution By Uncommon Parent Process
Status: test
Level: medium
Author: frack113
Date: 2022-11-17
File: rules/windows/process_creation/proc_creation_win_msbuild_susp_parent_process.yml
Commit: ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects suspicious execution of 'Msbuild.exe' by a uncommon parent process

Log source

product: windows
category: process_creation

Detection

selection:
    - Image|endswith: '\MSBuild.exe'
    - OriginalFileName: 'MSBuild.exe'
filter_parent:
    ParentImage|endswith:
        - '\devenv.exe'
        - '\cmd.exe'
        - '\msbuild.exe'
        - '\python.exe'
        - '\explorer.exe'
        - '\nuget.exe'
condition: selection and not filter_parent

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_msbuild_susp_parent_process.yml

Sources and licences

SigmaHQ
"Suspicious Msbuild Execution By Uncommon Parent Process" by frack113 (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_msbuild_susp_parent_process.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 Msbuild Execution By Uncommon Parent Process",
entity page, dataset version ref-bea3763e8e5e, updated 2022-11-17T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/33be4333-2c6b-44f4-ae28-102cdbde0a31 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 33be4333-2c6b-44f4-ae28-102cdbde0a31, 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.