Note the complete path and filename Norton reports, boot to safe mode, logged on to Windows as Administrator, use Window Explorer to locate the file, and try to rename or delete it. Personally, I'd rename it first (which should prevent it from executing), then wait a while to make sure everything else is working OK.
Its possible it might resist renaming or deleting - if so, there are workarounds. If you lemme know here on this thread what happens when you try, I might be able to offer more help.
BTW - that's likely not an all-by-itself file; its prolly related to a buncha other yuckware. You might wanna have a look at
THIS