Wasn't an exe, it was the command line of an extra svchost.exe that was running. Looks like it went away on its own, though.
Just spotted something else, has LocalServicePeerNet popped up on your svchost list? I keep closing it, but it opens up again after awhile.
This is really weird, I made a quick account just to post here about it, the EXACT SAME THING started happening to me today on my laptop. No idea...
