windows community v1.0.0

winmm.dll

winmm.dll — Sideloading hijacking (Microsoft)

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winmm.dll
winmm.dll

Sandbox: execFile · Timeout: 30s

Capabilities

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

Documentation

examples:

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

winmm.dll

Vendor: Microsoft

Expected Location: %SYSTEM32%

Vulnerable Executables:

  • %SYSTEM32%\mblctr.exe (Sideloading)
  • %SYSTEM32%\mspaint.exe (Sideloading)
  • %SYSTEM32%\mstsc.exe (Sideloading)
  • %SYSTEM32%\osk.exe (Sideloading)
  • %SYSTEM32%\presentationsettings.exe (Sideloading)
  • %SYSTEM32%\proximityuxhost.exe (Sideloading)
  • %SYSTEM32%\wfs.exe (Sideloading)
  • %SYSTEM32%\winsat.exe (Sideloading) [AutoElevate]
  • %APPDATA%\Zoom\bin_%VERSION%\Zoom.exe (Sideloading)

Acknowledgement: Wietze

Acknowledgement: Chris Spehn

Acknowledgement: Josh Allman

References