404 not found error and browser redirect

Greetings,

I've been wrestling with a difficult malware for a few weeks now, and I've finally decided to seek help. I've read similar threads in this forum and on other sites and followed the recommended steps, but have been unable to keep it from returning upon reboot.

I've downloaded and run the following malware removal software:

Rkill

CCleaner

Malwarebytes

Malwarebyters Anti-Rootkit

Spybot

TDSSKiller

ADWCleaner

None of these have prevented the malware from coming back. I think it resides in my browser profile.

I am running Windows 7 64 bit and Firefox v24.0 browser. I am randomly experiencing moments when Firefox gives me the 404 error (in various forms - google error, nginx, not found, etc), or I am redirected to Google when attempting to navigate to another site. I do not experience this in Internet Explorer or Firefox run in Safe Mode.

I'd much appreciate and guidance you can provide. Thanks in advance for your time and effort.

via Bleeping Computer Last 20 Posts http://www.bleepingcomputer.com/forums/t/510594/404-not-found-error-and-browser-redirect/