Sounds like the same crap that got on my desktop. It was hard to get rid off, I run NOD32 and it has an inspector mode. Running that in safe mode ID'ed 3 files that didn't belong - had nonsensical names, but the date and time made me certain it was that AV crap. Deleted them and it was gone. Til the next time, got it again about 3 days later.

MalawareBytes anti malware prgm (freebe) IDs it and allows you to delete it. I haven't had it again since installing MalawareBytes.