sigmahighHunting

Suspicious Debugger Registration Cmdline

Detects the registration of a debugger for a program that is available in the logon screen (sticky key backdoor).

MITRE ATT&CK

persistenceprivilege-escalation

Detection Query

selection1:
  CommandLine|contains: \CurrentVersion\Image File Execution Options\
selection2:
  CommandLine|contains:
    - sethc.exe
    - utilman.exe
    - osk.exe
    - magnify.exe
    - narrator.exe
    - displayswitch.exe
    - atbroker.exe
    - HelpPane.exe
condition: all of selection*

Author

Florian Roth (Nextron Systems), oscd.community, Jonhnathan Ribeiro

Created

2019-09-06

Data Sources

windowsProcess Creation Events

Platforms

windows

References

Tags

attack.persistenceattack.privilege-escalationattack.t1546.008

Raw Content

title: Suspicious Debugger Registration Cmdline
id: ae215552-081e-44c7-805f-be16f975c8a2
status: test
description: Detects the registration of a debugger for a program that is available in the logon screen (sticky key backdoor).
references:
    - https://blogs.technet.microsoft.com/jonathantrull/2016/10/03/detecting-sticky-key-backdoors/
    - https://bazaar.abuse.ch/sample/6f3aa9362d72e806490a8abce245331030d1ab5ac77e400dd475748236a6cc81/
author: Florian Roth (Nextron Systems), oscd.community, Jonhnathan Ribeiro
date: 2019-09-06
modified: 2022-08-06
tags:
    - attack.persistence
    - attack.privilege-escalation
    - attack.t1546.008
logsource:
    category: process_creation
    product: windows
detection:
    selection1:
        CommandLine|contains: '\CurrentVersion\Image File Execution Options\'
    selection2:
        CommandLine|contains:
            - 'sethc.exe'
            - 'utilman.exe'
            - 'osk.exe'
            - 'magnify.exe'
            - 'narrator.exe'
            - 'displayswitch.exe'
            - 'atbroker.exe'
            - 'HelpPane.exe'
    condition: all of selection*
falsepositives:
    - Unknown
level: high