First it disables firewall and security center.
Then it kills any processes having to do with anti-virus.
Deletes .exes for anti-virus programs.
Calls "net stop" on various things.
Opens and closes your disk tray.
Brings up some "title.wma", a default video somewhere in system.
forgets up file associations, making .dll files open in notepad, exes in image viewer, .reg files as XML, and so on.
Deletes My Music, My Documents, and My pictures.
Does a bunch of other stuff that I'm not going to bother describing.
Yeah. It's bad.