This virus contains a serious error, which prevents it from successfully infecting any file larger than around 4000 bytes. Larger files will be partially overwritten with garbage. The virus is encrypted, and contains the text string
Klaeren Ha¡, Ha¡!
Disinfection & Removal
Allow F-Secure Anti-Virus to disinfect the relevant files.
For more general information on disinfection, please see Removal Instructions.