MSIL.Kolilo - New Microsoft .NET framework virus
This new virus is not widespread in the wild and all .NET users should stay up-to-date on virus protection.
http://secunia.com/virus_information/30015/msil.kolilo/
MSIL.Kolilo is a polymorphic virus that infects .exe files under the Microsoft .NET Framework. This virus only executes on systems where Microsoft .NET framework is installed. The said installation is a component of the Windows operating system used to manage and provide pre-coded requirements to programs made specifically for the Windows platform.