Title:
CurrentVersion NT Autorun Keys Modification
Status:
test
Description:Detects modification of autostart extensibility point (ASEP) in registry.
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
Author: Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split)
Date: 2019-10-25
modified:2025-10-22
Tags:
- -'attack.privilege-escalation'
- -'attack.persistence'
- -'attack.t1547.001'
Logsource:
- category: registry_set
- product: windows
Detection:
selection_nt_current_version_base:
TargetObject|contains:
'\SOFTWARE\Microsoft\Windows NT\CurrentVersion'
selection_nt_current_version:
TargetObject|contains:
-'\Winlogon\VmApplet'
-'\Winlogon\Userinit'
-'\Winlogon\Taskman'
-'\Winlogon\Shell'
-'\Winlogon\GpExtensions'
-'\Winlogon\AppSetup'
-'\Winlogon\AlternateShells\AvailableShells'
-'\Windows\IconServiceLib'
-'\Windows\Appinit_Dlls'
-'\Image File Execution Options'
-'\Font Drivers'
-'\Drivers32'
-'\Windows\Run'
-'\Windows\Load'
filter_main_empty:
Details:
'(Empty)'
filter_main_null:
Details:
'None'
filter_main_poqexec:
Image:
'C:\Windows\System32\poqexec.exe'
filter_main_legitimate_subkey:
TargetObject|contains:
'\Image File Execution Options\'
TargetObject|endswith:
-'\DisableExceptionChainValidation'
-'\MitigationOptions'
filter_main_security_extension_dc:
Image:
'C:\Windows\system32\svchost.exe'
TargetObject|contains:
-'\Winlogon\GPExtensions\{827D319E-6EAC-11D2-A4EA-00C04F79F83A}\PreviousPolicyAreas'
-'\Winlogon\GPExtensions\{827D319E-6EAC-11D2-A4EA-00C04F79F83A}\MaxNoGPOListChangesInterval'
Details:
-'DWORD (0x00000001)'
-'DWORD (0x00000009)'
-'DWORD (0x000003c0)'
filter_main_runtimebroker:
Image:
'C:\Windows\System32\RuntimeBroker.exe'
TargetObject|contains:
'\runtimebroker.exe\Microsoft.Windows.ShellExperienceHost'
filter_optional_edge:
Image|startswith:
'C:\Program Files (x86)\Microsoft\Temp\'
Image|endswith:
'\MicrosoftEdgeUpdate.exe'
filter_optional_avguard:
Image|startswith:
-'C:\Program Files (x86)\Avira\Antivirus\avguard.exe'
-'C:\Program Files\Avira\Antivirus\avguard.exe'
TargetObject|contains:
'SOFTWARE\WOW6432Node\Avira\Antivirus\Overwrite_Keys\HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\'
TargetObject|endswith:
-'\userinit\UseAsDefault'
-'\shell\UseAsDefault'
Details:
-'explorer.exe'
-'C:\Windows\system32\userinit.exe,'
filter_optional_msoffice:
- TargetObject|contains:
- '\ClickToRunStore\HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\'
- '\ClickToRun\REGISTRY\MACHINE\Software\Microsoft\Windows NT\CurrentVersion\'
- Image:
- 'C:\Program Files\Microsoft Office\root\integration\integrator.exe'
- 'C:\Program Files (x86)\Microsoft Office\root\integration\integrator.exe'
filter_optional_officeclicktorun:
Image|startswith:
-'C:\Program Files\Common Files\Microsoft Shared\ClickToRun\'
-'C:\Program Files\Common Files\Microsoft Shared\ClickToRun\Updates\'
Image|endswith:
'\OfficeClickToRun.exe'
filter_optional_ngen:
Image|startswith:
'C:\Windows\Microsoft.NET\Framework'
Image|endswith:
'\ngen.exe'
filter_optional_onedrive:
Image|endswith:
'\AppData\Local\Microsoft\OneDrive\StandaloneUpdater\OneDriveSetup.exe'
TargetObject|endswith:
'\Microsoft\Windows\CurrentVersion\RunOnce\Delete Cached Update Binary'
Details|startswith:
'C:\Windows\system32\cmd.exe /q /c del /q "C:\Users\'
Details|endswith:
'\AppData\Local\Microsoft\OneDrive\Update\OneDriveSetup.exe"'
condition:
all of selection_* and not 1 of filter_main_* and not 1 of filter_optional_*
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
