sigmalowHunting

New Process Created Via Taskmgr.EXE

Detects the creation of a process via the Windows task manager. This might be an attempt to bypass UAC

MITRE ATT&CK

defense-evasion

Detection Query

selection:
  ParentImage|endswith: \taskmgr.exe
filter_main_generic:
  Image|endswith:
    - :\Windows\System32\mmc.exe
    - :\Windows\System32\resmon.exe
    - :\Windows\System32\Taskmgr.exe
condition: selection and not 1 of filter_main_*

Author

Florian Roth (Nextron Systems)

Created

2018-03-13

Data Sources

windowsProcess Creation Events

Platforms

windows

References

https://twitter.com/ReneFreingruber/status/1172244989335810049

Tags

attack.defense-evasionattack.t1036

Raw Content

title: New Process Created Via Taskmgr.EXE
id: 3d7679bd-0c00-440c-97b0-3f204273e6c7
status: test
description: Detects the creation of a process via the Windows task manager. This might be an attempt to bypass UAC
references:
    - https://twitter.com/ReneFreingruber/status/1172244989335810049
author: Florian Roth (Nextron Systems)
date: 2018-03-13
modified: 2024-01-18
tags:
    - attack.defense-evasion
    - attack.t1036
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        ParentImage|endswith: '\taskmgr.exe'
    filter_main_generic:
        Image|endswith:
            - ':\Windows\System32\mmc.exe'
            - ':\Windows\System32\resmon.exe'
            - ':\Windows\System32\Taskmgr.exe'
    condition: selection and not 1 of filter_main_*
falsepositives:
    - Administrative activity
level: low