Risk Level 1: Very Low for this virus but it a worm it will hope from one machine to another with the help of autorun.. This even launches it self on the same machine by the help of autorun.. The first thing you should do is diabale autorun.
Follow the below mention step to stop auto run..
1} Go to strat run type gpedit.msc
2} 2} go to administrative templets
3} then system.
4} On the right hand side enable auto play.
If you are facing this problem with the entire network the do this via GPO..