Well, if those tools didn't help, please follow these instructions:
1. Download another VirtuMundo removal tool -
VundoFix.
2. Install/unpack it.
3. Reboot your computer into
Safe Mode.
4. Once in Safe Mode open the VundoFix folder (where you installed VundoFix) and double-click on the KillVundo.bat file. Once a warning will appear press Enter.
Then enter exact path to the file. It should be
C:\WINDOWS\SYSTEM32\ssqpm.dll (it may also be C:\WINNT\SYSTEM32\ssqpm.dll or any other directory containing your Windows installation). Press Enter.
This should remove
VirtuMundo. Just don't forget to reboot your computer into Safe Mode. This step is very important.
While in Safe Mode you also may rerun Symantec's tool and KillBox.