A primitive virus which is rather "buggy", as infected programs are usually not able to replicate, as they are corrupted because of an error. This might be corrected in a later version, though.
Disinfection & Removal
Allow F-Secure Anti-Virus to disinfect the relevant files.
For more general information on disinfection, please see Removal Instructions.
This variant seems to be able to infect EXE files properly, but does not appear to infect COM files at all.