title: Wow6432Node CurrentVersion Autorun Keys Modification
id: b29aed60-ebd1-442b-9cb5-16a1d0324adb
related:
    - id: 17f878b8-9968-4578-b814-c4217fc5768c
      type: derived
status: experimental
description: Detects modification of autostart extensibility point (ASEP) in registry.
author: Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split)
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1547.001/T1547.001.md
    - https://docs.microsoft.com/en-us/sysinternals/downloads/autoruns
    - https://gist.github.com/GlebSukhodolskiy/0fc5fa5f482903064b448890db1eaf9d # a list with registry keys
date: 2019/10/25
modified: 2022/03/05
logsource:
    category: registry_event
    product: windows
detection:
    wow_current_version_base:
        EventType: SetValue
        TargetObject|contains: '\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion'
    wow_current_version:
        TargetObject|contains:
            - '\ShellServiceObjectDelayLoad'
            - '\Run\'
            - '\RunOnce\'
            - '\Explorer\ShellServiceObjects'
            - '\Explorer\ShellIconOverlayIdentifiers'
            - '\Explorer\ShellExecuteHooks'
            - '\Explorer\SharedTaskScheduler'
            - '\Explorer\Browser Helper Objects'
    filter_empty:
        Details: '(Empty)'
    filter_edge:
        Image|contains|all:
            - 'C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{'
            - '\setup.exe'
    filter_msoffice1:
        Image: 'C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe'
        TargetObject|contains: '\Office\ClickToRun\REGISTRY\MACHINE\Software\Wow6432Node\'
    filter_msoffice2:
        Image:
            - 'C:\Program Files\Microsoft Office\root\integration\integrator.exe'
            - 'C:\Program Files (x86)\Microsoft Office\root\integration\integrator.exe'
        TargetObject|contains: '\Explorer\Browser Helper Objects\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\'
    filter_dropbox:
        - Details|endswith: '-A251-47B7-93E1-CDD82E34AF8B}'
        - Details: 'grpconv -o'
        - Details|contains|all:
            - 'C:\Program Files'
            - '\Dropbox\Client\Dropbox.exe'
            - ' /systemstartup'
    filter_evernote:
        TargetObject|endswith: '\Explorer\Browser Helper Objects\{92EF2EAD-A7CE-4424-B0DB-499CF856608E}\NoExplorer'
    filter_dotnet:
        Image|contains: '\windowsdesktop-runtime-'
        TargetObject|endswith:
            - '\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\{e2d1ae32-dd1d-4ad7-a298-10e42e7840fc}'
            - '\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\{7037b699-7382-448c-89a7-4765961d2537}'
        Details|startswith:
            - '"C:\ProgramData\Package Cache\{7037b699-7382-448c-89a7-4765961d2537}\windowsdesktop-runtime-'
            - '"C:\ProgramData\Package Cache\{e2d1ae32-dd1d-4ad7-a298-10e42e7840fc}\windowsdesktop-runtime-'
        Details|endswith: '.exe" /burn.runonce'
    filter_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: wow_current_version_base and wow_current_version and not 1 of filter_*
fields:
    - SecurityID
    - ObjectName
    - OldValueType
    - NewValueType
falsepositives:
    - Legitimate software automatically (mostly, during installation) sets up autorun keys for legitimate reason
    - Legitimate administrator sets up autorun keys for legitimate reason
level: medium
tags:
    - attack.persistence
    - attack.t1547.001
