About 6 days ago, I noticed that, intermittently, when I clicked on a link within a search engine, I would be redirected to a totally irrelevant website (usually running some promotion). Overall, the system was running probably 30-40% slower by my estimation.
I immediately ran Windows Update, but there were no outstanding patches etc. I then updated my A/V (Symantec A/V 10.0 Corporate), did the same with Spybot 6.2 as well as Defender. I ran full scans with these, but nothing was reported.
I then proceeded to run Sophos Anti-Rootkit, but again, nothing was reported. Despite this, I kept going. I looked up "google redirect virus", and decided to investigate some relevant registry keys. However, when I tried to run Regedit from the Run menu, the desktop seemed to stall momentarily, before recovering, but there was no sign of Regedit.
At this point, I went to Kaspersky's website and ran their online scanner. Again, nothing reported. The same thing happened after running McAfee's online scanner.
Other programs I tried were Malwarebyte's scanner, as well as Gmer, Rootkit Hook Analyzer, RUBotted and McAfee's Rootkit Detective - nothing reported. Note that I had to rename Gmer, otherwise it would not run at all.
I then uninstalled Symantec's A/V and installed TrendMicro's PCCillin and ran a full scan. It managed to report some changes to the LMHosts file, and removed the offending entries. However, the same behaviour continued.
I even booted up the PC using Bitdefender's Rescue CD (Linux-based live CD, running latest definitions), but it found nothing as well.
I would really appreciate your help here. The DDS file is attached.