Troj_Viperik.A tries to delete all files and subfolders in the following folders:

  • C:\Program Files
  • C:\Documents and Setting
  • C:\Windows\System32
  • C:\Windows
  • It traverses all drives, from C to Z, then attempts to delete three subfolders aside from the ones mentioned above.

    It also creates many instances of the Microsoft Outlook application.

    Technical details are at this Trend Micro page.