This is not a real virus.  It is only a hoax.
http://hoaxbusters.ciac.org/HBMalCode.shtml#sulfnbk

>
>         A friend of mine just told me about a virus. It lays dormant for 14 days
> then wipes out your hard drive, after sending itself to everyone in you're
> address book. I searched and found the file and deleted it, must not have
> had it long enough.  You need to do this:  run "find" or "search" for the
> file:  sulfnbk*.*    if you have it, RIGHT click and delete it. then delete
> it from the recycle bin.