My computer was severely infected today, and while I've managed to deal with most of them and get my system back to normal, I've noticed that an IEXPLORE.EXE process starts up by itself and runs in the background for no reason(I don't use IE). There's also no actual IE window running, only the process itself. I tried killing the process but after about 5-10 minutes it goes back up again. I've scanned my system using Malwarebytes Anti-Malware, Spybot S&D and Microsoft Security Essentials, none of which have managed to find this threat. Any idea how to get rid of that process?