First time you've mentioned a W7 install, though I suspected this when you mentioned virus. You should note that Windows-based AV apps will sometimes give false positives when scanning Linux partitions because they don't know what they are seeing and just default to crying wolf.
Just looked it up and the 999 UID is assigned to first system user account defined by a normal user. It's just a pure guess, but I suspect that you created this account trying to invoke root and your OS now defaults to this as your UID. Continuing to operate as User 999 may make things difficult for you. I don't know if your /home directory is owned by 999 or 1000 (as it would be in a regular install). Remember, you can't access directories/files belonging to another user.
Your awk string contained an extra space that generated verbose output, but no harm done. We got what we wanted. As a tip, in future, it's best to copy and paste commands from code box into terminal with mouse.
I highly recommend Psychocat's site to familiarize yourself more with Ubuntu in general. Because you are running WINE, this sticky is fantastic for learning security despite the fact that it is quite deep and involved. Pay special attention to the WINE section and to NOT run it as root (not a good idea for any common app, but especially WINE). Digesting both will give you a better understanding of why Ubuntu does things the way it does.