[Basquiat]

about 95% sure you have a browser hijacking virus. That .exe file is an executable file. It's probably part of the problem. To get rid of it you'll need to reboot in safe mode, however it won't go away because these files populate in numerous areas. When you try to delete it from one spot, it sort of moves to another. Actually what happens (and i'm not a pro on this stuff by any means) is that root files are added all over the place, so when one gets zapped the other is still alive to do the same thing.
the Geekstogo folks will help you for free. The software DL's that they have, are actually really effective. They also tell you which "anti-virus" programs to avoid. There are tons of them! They are actually viruses themselves.
Anyway, this is a super resource and it's totally free.