windows community v1.0.0

userenv.dll

userenv.dll — Sideloading hijacking (Microsoft)

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userenv.dll
userenv.dll

Sandbox: execFile · Timeout: 30s

Capabilities

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

Documentation

examples:

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

userenv.dll

Vendor: Microsoft

Expected Location: %SYSTEM32%

Vulnerable Executables:

  • %SYSTEM32%\appidpolicyconverter.exe (Sideloading)
  • %SYSTEM32%\appvclient.exe (Sideloading)
  • %SYSTEM32%\appvshnotify.exe (Sideloading)
  • %SYSTEM32%\bdeuisrv.exe (Sideloading)
  • %SYSTEM32%\colorcpl.exe (Sideloading)
  • %SYSTEM32%\customshellhost.exe (Sideloading)
  • %SYSTEM32%\dccw.exe (Sideloading) [AutoElevate]
  • %SYSTEM32%\deviceenroller.exe (Sideloading)
  • %SYSTEM32%\dmomacpmo.exe (Sideloading)
  • %SYSTEM32%\dsregcmd.exe (Sideloading)
  • %SYSTEM32%\efsui.exe (Sideloading)
  • %SYSTEM32%\gpupdate.exe (Sideloading)
  • %SYSTEM32%\mdmappinstaller.exe (Sideloading)
  • %SYSTEM32%\mdmdiagnosticstool.exe (Sideloading)
  • %SYSTEM32%\microsoftedgebchost.exe (Sideloading)
  • %SYSTEM32%\microsoftedgecp.exe (Sideloading)
  • %SYSTEM32%\microsoftedgesh.exe (Sideloading)
  • %SYSTEM32%\mrt.exe (Sideloading)
  • %SYSTEM32%\msra.exe (Sideloading)
  • %SYSTEM32%\musnotification.exe (Sideloading)
  • %SYSTEM32%\musnotificationux.exe (Sideloading)
  • %SYSTEM32%\netsh.exe (Sideloading)
  • %SYSTEM32%\omadmclient.exe (Sideloading)
  • %SYSTEM32%\proquota.exe (Sideloading)
  • %SYSTEM32%\rekeywiz.exe (Sideloading)
  • %SYSTEM32%\runexehelper.exe (Sideloading)
  • %SYSTEM32%\securityhealthservice.exe (Sideloading)
  • %SYSTEM32%\settingsynchost.exe (Sideloading)
  • %SYSTEM32%\systemsettingsadminflows.exe (Sideloading) [AutoElevate]
  • %SYSTEM32%\tttracer.exe (Sideloading)
  • %SYSTEM32%\utcdecoderhost.exe (Sideloading)
  • %SYSTEM32%\vaultcmd.exe (Sideloading)
  • %SYSTEM32%\workfolders.exe (Sideloading)
  • %SYSTEM32%\wpcmon.exe (Sideloading)

Acknowledgement: Wietze

Acknowledgement: Chris Spehn

References