Sigma rule: Common Autorun Keys Modification

Rule

Title

Common Autorun Keys Modification

Status

test

Level

medium

Author

Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split), wagga (name)

Date

2019-10-25

Modified

2025-10-22

File

rules/windows/registry/registry_set/registry_set_asep_reg_keys_modification_common.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects modification of autostart extensibility point (ASEP) in registry.

Log source

product

windows

category

registry_set

Detection

selection:
    TargetObject|contains:
        - '\SOFTWARE\Wow6432Node\Microsoft\Windows CE Services\AutoStart'
        - '\Software\Wow6432Node\Microsoft\Command Processor\Autorun'
        - '\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components'
        - '\SOFTWARE\Microsoft\Windows CE Services\AutoStartOnDisconnect'
        - '\SOFTWARE\Microsoft\Windows CE Services\AutoStartOnConnect'
        - '\SYSTEM\Setup\CmdLine'
        - '\Software\Microsoft\Ctf\LangBarAddin'
        - '\Software\Microsoft\Command Processor\Autorun'
        - '\SOFTWARE\Microsoft\Active Setup\Installed Components'
        - '\SOFTWARE\Classes\Protocols\Handler'
        - '\SOFTWARE\Classes\Protocols\Filter'
        - '\SOFTWARE\Classes\Htmlfile\Shell\Open\Command\(Default)'
        - '\Environment\UserInitMprLogonScript'
        - '\SOFTWARE\Policies\Microsoft\Windows\Control Panel\Desktop\Scrnsave.exe'
        - '\Software\Microsoft\Internet Explorer\UrlSearchHooks'
        - '\SOFTWARE\Microsoft\Internet Explorer\Desktop\Components'
        - '\Software\Classes\Clsid\{AB8902B4-09CA-4bb6-B78D-A8F59079A8D5}\Inprocserver32'
        - '\Control Panel\Desktop\Scrnsave.exe'
filter_main_empty:
    Details: '(Empty)'
filter_main_null:
    Details: null
filter_main_poqexec:
    Image: 'C:\Windows\System32\poqexec.exe'
filter_optional_msoffice:
    - TargetObject|contains:
          - '\Office\ClickToRun\REGISTRY\MACHINE\Software\Classes\PROTOCOLS\Handler\'
          - '\ClickToRunStore\HKMU\SOFTWARE\Classes\PROTOCOLS\Handler\'
    - Details:
          - '{314111c7-a502-11d2-bbca-00c04f8ec294}'
          - '{3459B272-CC19-4448-86C9-DDC3B4B2FAD3}'
          - '{42089D2D-912D-4018-9087-2B87803E93FB}'
          - '{5504BE45-A83B-4808-900A-3A5C36E7F77A}'
          - '{807583E5-5146-11D5-A672-00B0D022E945}'
filter_optional_chrome:
    TargetObject|contains: '\SOFTWARE\Microsoft\Active Setup\Installed Components\{8A69D345-D564-463c-AFF1-A69D9E530F96}'
filter_optional_edge:
    TargetObject|contains: '\SOFTWARE\Microsoft\Active Setup\Installed Components\{9459C573-B17A-45AE-9F64-1857B5D58CEE}'
filter_optional_IE:
    TargetObject|contains: '\Software\Microsoft\Active Setup\Installed Components\{89820200-ECBD-11cf-8B85-00AA005B4383}'
filter_optional_integrator:
    Image:
        - 'C:\Program Files (x86)\Microsoft Office\root\integration\integrator.exe'
        - 'C:\Program Files\Microsoft Office\root\integration\integrator.exe'
filter_optional_office:
    Image|startswith:
        - 'C:\Program Files\Common Files\Microsoft Shared\ClickToRun\'
        - 'C:\Program Files\Common Files\Microsoft Shared\ClickToRun\Updates\'
    Image|endswith: '\OfficeClickToRun.exe'
condition: selection and not 1 of filter_main_* and not 1 of filter_optional_*

False positives (as the rule lists them)

• Legitimate software automatically (mostly, during installation) sets up autorun keys for legitimate reason
• Legitimate administrator sets up autorun keys for legitimate reason

Tags

• attack.privilege-escalation
• attack.persistence
• attack.t1547.001

MITRE ATT&CK ids this rule names

• T1547.001

Related rules

• 17f878b8-9968-4578-b814-c4217fc5768c (obsolete)

References

• https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1547.001/T1547.001.md
• https://learn.microsoft.com/en-us/sysinternals/downloads/autoruns
• https://gist.github.com/GlebSukhodolskiy/0fc5fa5f482903064b448890db1eaf9d
• https://persistence-info.github.io/Data/userinitmprlogonscript.html

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/registry/registry_set/registry_set_asep_reg_keys_modification_common.yml