I had the same problem with the win 7 security 2012 virus, even after following the instructions from this site and several additional scans with Malwarebytes in safe mode the virus persisted until finally Malwarebytes found the remaining malware in the system that were causing pop-ups and re-directs. In all I'd say it took about 5 scans to finally return my laptop to working order when I booted in normal mode from which I then did two scans each with Malwarebytes and Avira in which all managed to find additional trojans still in the system. The key for me to rid my laptop of the virus was persistence, even when the system appeared to operate normally my anti-virus and anti-malware software found that it wasn't gone completely. I also ran TDSSkiller and Vundofix which showed negative results, I ran the former after Avira found a Vundo which Malwarebytes scans missed. From the information I've read it seems these two viruses are one and the same and just change name depending what OS you're using and from my own personal experience it seems to be a particularly nasty one that doesn't seem to want to go away easily.
Also if it's ok I'd like to ask does anyone know of any additional things I could do following what I've already done to ensure that this virus has completely gone from my laptop? Although my laptop shows no symptoms of being infected, I have obvious doubts since both Avira and Malwarebytes both missed several things that were picked up on later scans.
Edited by Stephen22, 20 June 2011 - 03:29 PM.