Yes windows does use Corona as a file name, but that is not what this is.

The only thing I could find on it is in german http://www.google.com/search?q=Coron...&sa=N&filter=0
on google, and you have to use translate page unless you happen to speak german.

They, also didn't have a cure for it but seemed to think it might be a worm? One of them did show how to delete it, but another said it came back after being deleted on the next boot.

Good luck, and keep us informed.