I was running into all these same issues. I did everything described on this forum and was able to get rid all malicious programs. Although nothing fixed the issue about the specific anti-virus site's that were being blocked by the malware. After running SmitFraudFix on the infected computer and then on a clean computer, I had realized that my network card's dns had been changed. After I fixed this little issue I was able to download and update my anti-spyware and virus software.
To fix the issue do the following....
GOTO >Control Panel >Network Connections >Right click on your active internet connection and GOTO >properties Double click on >internet protocols (TCP/IP) and select >Obtain DNS server address automatically. NOTE: if you have more then one network adapter do this DNS fix for all adapters to prevent future abuse.
Here are the DNS that I found on my system
This will remove the blocks on the sites stated in this forum and will stop the malware from downloading and reinstalling itself and also stop the website redirection problem.
After you fix the DNS uninstall your anti-spyware and anti-virus software, download and reinstall them and run your scan, this Virus maybe infecting your protection software definition files when you update while the Virus's DNS is active. This will cause your Scanners to miss the malicious program.
I used Malwarebytes, SUPERAntiSpyware Free Edition, Ad-Aware, Trojan Remover, and RegCure. Each program found objects the other ones missed, i'd suggest running them all just to be safe. I kicked its @$$!
This programmer maybe smart, but he can't outsmart a Fox!
Hope this helps anyone having an issue, Good luck!