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How can I impersonate an account in vbscript

Posted on 2011-03-22
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I am trying to configure some VBScripts to run within a third-party system.  I need to impersonate a domain user from within the script.  How can this be done?  Normally the WMI classes allow impersonate, but, I am trying to use the Scripting.FileSystemObject.
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Question by:wls3
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Expert Comment

by:holthd
ID: 35194809
Is it an possiblity to run the entire script as another user? If so you can achieve this using Windows' built-in 'runas.exe' or a scheduled task, depending on your scenario.

If you trigger it remotely you can use 'psexec.exe' by Sysinternals (Microsoft).

If you need to trigger only a portion of the script as userA while the main script runs as userB you can allways re-call a portion of the script through WshShell.Run "Runas.exe <args> C:\Scripts\PortionOfMainScript.vbs". Might get messy. Use arguments to pass variables to the portion script.

-Daniel
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RobSampson earned 2000 total points
ID: 35195355
If you want to do it with the FileSystemObject, you need to create a pipe, using alternate credentials.

            
		On Error Resume Next
		objNetwork.RemoveNetworkDrive "\\" & strComputer & "\IPC$", True, False
		Err.Clear
		On Error GoTo 0
		objNetwork.MapNetworkDrive "", "\\" & strComputer & "\IPC$", False, strUsername, strPassword
		' Use FSO methods now
		

Open in new window


Regards,

Rob.
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by:wls3
ID: 35199016
Thanks Rob.  I had not had to dig into those NetworkDrive methods before.  I am checking them out on MSDN now.  Appreciate the pointer.
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Expert Comment

by:RobSampson
ID: 35202815
Thanks for the grade, you'll also want to remove the mapping again after you use the FSO methods.

Rob.
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Author Comment

by:wls3
ID: 35203336
Appreciate the follow up comment.  I had seen some other folks suggesting something along these lines, but, I didn't know this was essentially creating a pipe.  From what I had seen I just assumed the close was to dispose of the object, not a pipe.  Again, thanks.
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