About half an hour ago I had a close encounter with what I have found to be called the "Microsoft Antivirus online security scanner". Everything happened so fast. One moment I was reading some movie reviews online and then all of a sudden IE7 minimizes and a pop-up appears saying your system is slow due to viruses and needs to be scanned (or something along that general direction).
Anyway, I immediately tried ctrl-alt-del but that started the scanner which opened my computer and started flashing "6 viruses found" under my C:/ dirve. A pop-up quickly appeared saying what supposedly was found and that I needed to download some other antivirus software to remove them. Fortunately I keep both my home computers (only the one got this problem and the other I am using now to type this message) fully patched and I am pretty sure IE stopped it from automatically running because I was able to click cancel and everything seemed to go back to normal.
Strangely enough there were no records in NIS 2009's history of it blocking or taking any action what so ever while all of this was occuring. A full system scan with NIS while the computer was in safe mode (with system restore disabled) found nothing and I am now running a full system scan with MBAM. Prior to starting these scans I already took the precaution of deleting my temp folder and my "flash cookies". Should MBAM come out clean I will likely also try the windows malicious software removal tool.
What I need to know is what course of action should I take if all of my scans come out clean and I find no difference in pc performance?
-Pexley
Windows XP SP3 Home IE7 (only browser)
NIS 2009 16.7.2.10 (Early load always enabled)
MBAM (updates downloaded before scan)