Wow6432Node CurrentVersion Autorun Keys Modification

  1title: Wow6432Node CurrentVersion Autorun Keys Modification
  2id: b29aed60-ebd1-442b-9cb5-16a1d0324adb
  3related:
  4    - id: 17f878b8-9968-4578-b814-c4217fc5768c
  5      type: obsolete
  6status: test
  7description: Detects modification of autostart extensibility point (ASEP) in registry.
  8references:
  9    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1547.001/T1547.001.md
 10    - https://learn.microsoft.com/en-us/sysinternals/downloads/autoruns
 11    - https://gist.github.com/GlebSukhodolskiy/0fc5fa5f482903064b448890db1eaf9d # a list with registry keys
 12    - https://oddvar.moe/2018/03/21/persistence-using-runonceex-hidden-from-autoruns-exe/
 13author: Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split)
 14date: 2019-10-25
 15modified: 2025-10-07
 16tags:
 17    - attack.persistence
 18    - attack.t1547.001
 19logsource:
 20    category: registry_set
 21    product: windows
 22detection:
 23    selection_wow_current_version_base:
 24        TargetObject|contains: '\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion'
 25    selection_wow_current_version_keys:
 26        TargetObject|contains:
 27            - '\ShellServiceObjectDelayLoad'
 28            - '\Run\'
 29            - '\RunOnce\'
 30            - '\RunOnceEx\'
 31            - '\RunServices\'
 32            - '\RunServicesOnce\'
 33            - '\Explorer\ShellServiceObjects'
 34            - '\Explorer\ShellIconOverlayIdentifiers'
 35            - '\Explorer\ShellExecuteHooks'
 36            - '\Explorer\SharedTaskScheduler'
 37            - '\Explorer\Browser Helper Objects'
 38    filter_main_empty:
 39        Details: '(Empty)'
 40    filter_main_ms_win_desktop_runtime:
 41        Details|startswith: '"C:\ProgramData\Package Cache\{d21a4f20-968a-4b0c-bf04-a38da5f06e41}\windowsdesktop-runtime-'
 42    filter_main_vcredist:
 43        Image|endswith: '\VC_redist.x64.exe'
 44        Details|endswith: '}\VC_redist.x64.exe" /burn.runonce'
 45    filter_main_upgrades:
 46        Image|startswith:
 47            - 'C:\ProgramData\Package Cache'
 48            - 'C:\Windows\Temp\'
 49        Image|contains:
 50            - '\winsdksetup.exe'
 51            - '\windowsdesktop-runtime-'  # C:\WINDOWS\Temp\{751E2E78-46DC-4376-9205-99219CDC34AE}\.be\windowsdesktop-runtime-6.0.12-win-x86.exe
 52            - '\AspNetCoreSharedFrameworkBundle-'  # "C:\ProgramData\Package Cache\{b52191c1-a9c0-4b34-9a4e-930c2dd8a540}\AspNetCoreSharedFrameworkBundle-x86.exe" /burn.runonce
 53        Details|endswith: ' /burn.runonce'
 54    filter_main_uninstallers:
 55        # This image path is linked with different uninstallers when running as admin unfortunately
 56        Image|startswith: 'C:\Windows\Installer\MSI'
 57        TargetObject|contains: '\Explorer\Browser Helper Objects'
 58    filter_main_msiexec:
 59        Image: 'C:\WINDOWS\system32\msiexec.exe'
 60        TargetObject|contains: '\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\'
 61    filter_main_edge:
 62        Image|contains|all:
 63            - 'C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{'
 64            - '\setup.exe'
 65    filter_optional_msoffice1:
 66        Image: 'C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe'
 67        TargetObject|contains: '\Office\ClickToRun\REGISTRY\MACHINE\Software\Wow6432Node\'
 68    filter_optional_msoffice2:
 69        Image:
 70            - 'C:\Program Files\Microsoft Office\root\integration\integrator.exe'
 71            - 'C:\Program Files (x86)\Microsoft Office\root\integration\integrator.exe'
 72        TargetObject|contains: '\Explorer\Browser Helper Objects\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\'
 73    filter_optional_dropbox:
 74        - Details|endswith: '-A251-47B7-93E1-CDD82E34AF8B}'
 75        - Details: 'grpconv -o'
 76        - Details|contains|all:
 77              - 'C:\Program Files'
 78              - '\Dropbox\Client\Dropbox.exe'
 79              - ' /systemstartup'
 80    filter_optional_evernote:
 81        TargetObject|endswith: '\Explorer\Browser Helper Objects\{92EF2EAD-A7CE-4424-B0DB-499CF856608E}\NoExplorer'
 82    filter_optional_dotnet:
 83        Image|contains: '\windowsdesktop-runtime-'
 84        TargetObject|endswith:
 85            - '\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\{e2d1ae32-dd1d-4ad7-a298-10e42e7840fc}'
 86            - '\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\{7037b699-7382-448c-89a7-4765961d2537}'
 87        Details|startswith: '"C:\ProgramData\Package Cache\'
 88        Details|endswith: '.exe" /burn.runonce'
 89    filter_optional_office:
 90        Image|startswith:
 91            - 'C:\Program Files\Common Files\Microsoft Shared\ClickToRun\'
 92            - 'C:\Program Files\Common Files\Microsoft Shared\ClickToRun\Updates\'
 93        Image|endswith: '\OfficeClickToRun.exe'
 94    filter_optional_discord:
 95        TargetObject|endswith: '\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Discord'
 96        Details|endswith: 'Discord.exe --checkInstall'
 97    filter_optional_avira:
 98        Details|endswith: '\Avira.OE.Setup.Bundle.exe" /burn.runonce'
 99        Image|endswith: '\Avira.OE.Setup.Bundle.exe'
100    filter_optional_avg_1:
101        Image|endswith: '\instup.exe'
102        TargetObject|endswith: '\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\AvRepair'
103        Details|endswith: 'instup.exe" /instop:repair /wait'
104    filter_optional_avg_2:
105        Image|endswith: '\instup.exe'
106        TargetObject|endswith:
107            - '\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayIdentifiers\00avg\(Default)'
108            - '\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayIdentifiers\00asw\(Default)'
109        Details:
110            - '{472083B1-C522-11CF-8763-00608CC02F24}'
111            - '{472083B0-C522-11CF-8763-00608CC02F24}'
112    condition: all of selection_* and not 1 of filter_main_* and not 1 of filter_optional_*
113falsepositives:
114    - Legitimate software automatically (mostly, during installation) sets up autorun keys for legitimate reason
115    - Legitimate administrator sets up autorun keys for legitimate reason
116level: medium