How to find a DLL given a CLSID?

Question

I have a situation in which a managed DLL calls some unmanaged DLL. I know the CLSID of the unmanaged DLL, is there any way to find out what binary file houses that CLSID?

Answer 1

Normaly, you can just go to:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\"GUID"

And find a key called "InProcServer32" for instance and there will be the default value that has the DLL. This is one simple way to do it.

Answer 2

Can you not just search for it in the registry using regedit and look for the binary path.

Answer 3

Based on BobbyShaftoe reply we can build a simple vbs script that reads that registry for us:

Dll_RegPath = "HKEY_CLASSES_ROOT\CLSID\<GUID>\InProcServer32\"

Paste the following to "test.vbs"

Sub Main

    ' used to find location of "System.Collections.ArrayList" progid dll
    Const csGUID = "{6896B49D-7AFB-34DC-934E-5ADD38EEEE39}"

    MsgBox srGetDllPathByGUID(csGUID)

End Sub

Function srGetDllPathByGUID( sGUID )
    Const csRegPath = "HKEY_CLASSES_ROOT\CLSID\<GUID>\InProcServer32\"

    Dim oShell: Set oShell = CreateObject("WScript.Shell")
    Dim sReg: sReg = Replace( csRegPath, "<GUID>", sGUID ) ' build str

    srGetDllPathByGUID = oShell.RegRead(sReg)

    Set oShell = Nothing ' clean up
End Function

Call Main

You can also find ProgId by:

ProgID_RegPath = "HKEY_CLASSES_ROOT\CLSID\<GUID>\ProgID\"