sigmamediumHunting

Gpscript Execution

Detects the execution of the LOLBIN gpscript, which executes logon or startup scripts configured in Group Policy

MITRE ATT&CK

defense-evasion

Detection Query

selection_img:
  - Image|endswith: \gpscript.exe
  - OriginalFileName: GPSCRIPT.EXE
selection_cli:
  CommandLine|contains:
    - " /logon"
    - " /startup"
filter_main_svchost:
  ParentCommandLine: C:\windows\system32\svchost.exe -k netsvcs -p -s gpsvc
condition: all of selection_* and not 1 of filter_main_*

Author

frack113

Created

2022-05-16

Data Sources

windowsProcess Creation Events

Platforms

windows

References

Tags

attack.defense-evasionattack.t1218

Raw Content

title: Gpscript Execution
id: 1e59c230-6670-45bf-83b0-98903780607e
status: test
description: Detects the execution of the LOLBIN gpscript, which executes logon or startup scripts configured in Group Policy
references:
    - https://oddvar.moe/2018/04/27/gpscript-exe-another-lolbin-to-the-list/
    - https://lolbas-project.github.io/lolbas/Binaries/Gpscript/
author: frack113
date: 2022-05-16
modified: 2023-06-14
tags:
    - attack.defense-evasion
    - attack.t1218
logsource:
    product: windows
    category: process_creation
detection:
    selection_img:
        - Image|endswith: '\gpscript.exe'
        - OriginalFileName: 'GPSCRIPT.EXE'
    selection_cli:
        CommandLine|contains:
            - ' /logon'
            - ' /startup'
    filter_main_svchost:
        ParentCommandLine: 'C:\windows\system32\svchost.exe -k netsvcs -p -s gpsvc'
    condition: all of selection_* and not 1 of filter_main_*
falsepositives:
    - Legitimate uses of logon scripts distributed via group policy
level: medium