1200KM / simulation
T1547.004 Winlogon Helper DLL — Attack Simulation
Adversaries may abuse features of Winlogon to execute DLLs and/or executables when a user logs in. Winlogon.exe is a Windows component responsible for actions at logon/logoff as well as the secure attention sequence (SAS) triggered by Ctrl-Alt-Delete. Registry entries in HKLM\Software[\\Wow6432Node\\]\Microsoft\Windows NT\CurrentVersion\Winlogon\ and HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\ are used to manage additional helper…
Technique description
Adversaries may abuse features of Winlogon to execute DLLs and/or executables when a user logs in. Winlogon.exe is a Windows component responsible for actions at logon/logoff as well as the secure attention sequence (SAS) triggered by Ctrl-Alt-Delete. Registry entries in HKLM\Software[\\Wow6432Node\\]\Microsoft\Windows NT\CurrentVersion\Winlogon\ and HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\ are used to manage additional helper…
At least one platform-compatible Atomic procedure is documented. Individual review, lab prerequisites, and validation remain required.
Official ATT&CK definition · Detection rules and anomaly models
Documented simulation candidates
- Winlogon HKLM Shell Key Persistence - PowerShell
Procedure 95a3c42f-8c88-4952-ad60-13b81d929a9d; elevation not declared required; cleanup present, not reviewed. Not executed or individually validated.
- Winlogon Shell Key Persistence - PowerShell
Procedure bf9f9d65-ee4d-4c3e-a843-777d04f19c38; elevation not declared required; cleanup present, not reviewed. Not executed or individually validated.
- Winlogon Notify Key Logon Persistence - PowerShell
Procedure d40da266-e073-4e5a-bb8b-2b385023e5f9; elevation not declared required; cleanup present, not reviewed. Not executed or individually validated.
- Winlogon HKLM Userinit Key Persistence - PowerShell
Procedure f9b8daff-8fa7-4e6a-a1a7-7c14675a545b; elevation not declared required; cleanup present, not reviewed. Not executed or individually validated.
- Winlogon Userinit Key Persistence - PowerShell
Procedure fb32c935-ee2e-454b-8fa3-1c46b42e8dfb; elevation not declared required; cleanup present, not reviewed. Not executed or individually validated.
Connected ecosystem references
Linked tags
Detection and collection
Attack tools
No reviewed association in this snapshot.
Threat actor context
These are explicit actor-to-technique associations in the existing Threat Matrix snapshot, not attribution of an event or proof that a detector identifies the actor. No tool-to-actor relationship is inferred.
Existing research
Pinned research references. No browser attack runner, live simulation result or validated detector is asserted. Source mappings and validation limits are preserved. ATT&CK / Atomic provenance · Detection provenance.