Since you have already formatted this computer to get rid of this virus then its OK.
But if you have this infection on any other computer or if you known where it came from you can report it to symantec
you can submit the file to
https://submit.symantec.com/basic -Depending on your support contract
Submiting a file is very important always for mainly 2 reasons.
Once you have submitted the file and symantec has the definition for it
1. You will never get infected with the same file so you wont have to format any machine again.
there was one computer you went ahead and formatted it what if it would have been more than 100 computers
2. Nobody else across the world using Symantec or norton product will get infected with the same threat.Some social work as well.