XP system cleanup after Desktop Security 2010/2011 Attack

Problem: Desktop Security 2010 and/or 2011 loaded onto XP system despite having Sophos rev. 9.5 installed. This malware over-rides MS Windows firewall and over-rides the anti-virus program.

Solution: Cleanup in safe mode with networking using Spybot and MS remote security essential scan. Had to use TDSSKiller to cleanup completely. Sophos was unable to deal with this problem.