RunAsSpc Details and examples
Pass a password to runas using RunAsSpc
RunAsSpc works similarly to the standard runas command, but includes a password parameter
Syntax:
>> RunAsSpc.exe /program:"path\yourApp.exe" /user:"anyAccount" /password:"accountPassword" <<
Example:
>> RunAsSpc.exe /program:"c:\windows\system32\regedt32.exe" /user:"admin" /password:"pw" <<
There is no security check and the password is in plaintext.
To hide your login credentials, you can create an encrypted file
either via the command line using RunAsSpc.exe or through the graphical user interface RunAsSpcAdmin.exe.See below under >> Build encrypted files <<
Then you can pass this encrypted file to RunAsSpc.exe as follows:
- If the encrypted file is named "crypt.spc", you can start it by double-clicking RunAsSpc.exe in the same directory.
- Drag and drop your encrypted file onto RunAsSpc.exe.
- Via the command line: >> RunAsSpc.exe /cryptfile:"path\NameOfCryptfile" <<
- Create a shortcut or link like: >> c:\path\runasspc.exe /cryptfile:"path\NameOfCryptfile" <<
- Set RunAsSpc.exe as the default program for ".spc" files on your system to launch encrypted files with a double-click.
- You can also use any other custom file extension for your encrypted files. It just needs to be associated with RunAsSpc.exe when called.
Build encrypted files
First option: via the command line using RunAsSpc.exe.
>> runasspc.exe /cryptfile:"crypt.spc" /program:"prog.exe" /domain:"localhost" /user:"admin" /password:"pass" <<
You can find more examples in the supplied "CommandLineArguments.txt" file, or run "runasspc.exe -h" in the command line for help.
Second option: using the graphical user interface RunAsSpcAdmin.exe.
See the screenshots below for various example configurations, or watch the example video.
Configuration examples with the RunAsSpcAdmin GUI
Start Computer Management as admin using "C:\Windows\System32\CompMgmtLauncher.exe"
Start registry editor under the local user account localadmin.
Start registry under a domain account, in example the Azure Entra account entrauser01.
Install a msi file vlc.msi over a domain account which has local administrator rights.
Install a msi file vlc.msi with installation arguments over a domain account which has local administrator rights.
Open the Excel document molecularWheigtCalculation.xls under domainaccount departmentuser.
Start a msc file like the computerconsole
Start a batchfile mybatch.bat or mybatch.cmd with elevated UAC privileges by using RunElevated
How can I run the Windows command line cmd.exe as administrator with elevated UAC privileges by using RunElevated
Start a VBS script with different privileges via RunAsSpc
Insert a registry entry
Run a batchfile ".bat" or ".cmd" with other rights
Install Java with parameters /S /V /qn
Run a Batchfile with some options like optionA optionB optionC
Use environment variables
Call with rundll32 the >>>Add / Remove programs applet<<<
Contact:
For any suggestions, errors, questions, specific requirements, or adjustments, please contact:
runas@robotronic.net
Licence:
RunAsSpc is free for private use only.
For companies and other organizations, we offer a licensed version registered to the organization name.
Date: 2026-10-16