Solution is Unhide.exe, which can be downloaded from this site at this forum:
Security > Am I infected? What do I do? > Virus removed start menus and documents
Search for Unhide.exe in a post by Quietman7. It cleaned up my regular files, bu it looks like I need to manually find my desktop files & favorites.
Web searches for the Unhide.exe produces many hits & I suspect most are malware.
I have a similar problem. Microsoft Security Essentils identified Trojan:WinNT/Alureon.S. MalwareBytes mostly removed it, but IE9 was still trying to connect to a couple of suspicious IP addresses, which were blocked. I found that many folders & files appeared to be missing, maybe deleted. In a Command window, DIR does not display them, but if I navigate to to a known location, I can run executables. I downloaded Pandora Recovery from CNET; PR did not display any of the missing folder/files as deleted, but did register them when I turned off "Show deleted items only".
Edited by Cliifc, 24 May 2011 - 02:08 PM.