I had this exact same virus a few weeks ago.
At that time I was using Avira Antivirus as my virus-program, wich it infected aswell.
And I lost half of my daz-studio downloads and exe programs.

• I got the same virus again yesterday from dc++ when I tried to download a poser-tutorial from a user.
   Glad I bought myself F-secure 2006. As the programs detects the virus, and deletes it. :)