windows community v1.0.0

credui.dll

credui.dll — Sideloading, Environment Variable hijacking (Microsoft)

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credui.dll
credui.dll

Sandbox: execFile · Timeout: 30s

Capabilities

security.defenseevasion.dll-hijack
security.privilegeescalation.dll-hijack

Documentation

examples:

  • description: "Place malicious credui.dll in the search order location" command: "copy malicious.dll "%SYSTEM32%\credui.dll""
  • description: "Execute the vulnerable binary to trigger the hijack" command: ""%SYSTEM32%\efsui.exe""

credui.dll

Vendor: Microsoft

Expected Location: %SYSTEM32%

Vulnerable Executables:

  • %SYSTEM32%\efsui.exe (Sideloading)
  • %SYSTEM32%\fxssvc.exe (Sideloading)
  • %SYSTEM32%\gpfixup.exe (Sideloading)
  • %SYSTEM32%\licmgr.exe (Sideloading)
  • %SYSTEM32%\mstsc.exe (Sideloading)
  • %SYSTEM32%\netdom.exe (Sideloading)
  • %SYSTEM32%\nlbmgr.exe (Sideloading)
  • %SYSTEM32%\perfmon.exe (Sideloading) [AutoElevate]
  • %SYSTEM32%\rekeywiz.exe (Sideloading)
  • %SYSTEM32%\rpcping.exe (Sideloading)
  • %SYSTEM32%\runas.exe (Sideloading)
  • %SYSTEM32%\systempropertiesadvanced.exe (Sideloading) [AutoElevate]
  • %SYSTEM32%\taskmgr.exe (Sideloading) [AutoElevate]
  • %SYSTEM32%\wbadmin.exe (Sideloading)
  • %SYSTEM32%\wfs.exe (Sideloading)
  • %SYSTEM32%\wkspbroker.exe (Sideloading)
  • %SYSTEM32%\rasphone.exe (Environment Variable)

Acknowledgement: Wietze

Acknowledgement: Chris Spehn

References