sigmamediumHunting

Suspicious Msbuild Execution By Uncommon Parent Process

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

Detection Query

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

Author

frack113

Created

2022-11-17

Data Sources

windowsProcess Creation Events

Platforms

windows

References

Tags

attack.defense-evasion

Raw Content

title: Suspicious Msbuild Execution By Uncommon Parent Process
id: 33be4333-2c6b-44f4-ae28-102cdbde0a31
status: test
description: Detects suspicious execution of 'Msbuild.exe' by a uncommon parent process
references:
    - https://app.any.run/tasks/abdf586e-df0c-4d39-89a7-06bf24913401/
    - https://www.echotrail.io/insights/search/msbuild.exe
author: frack113
date: 2022-11-17
tags:
    - attack.defense-evasion
logsource:
    category: process_creation
    product: windows
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
falsepositives:
    - Unknown
level: medium