This encrypted virus appears to do nothing of interest but replicate. It will "pad" files with garbage before infecting them, so disinfected files may be up to 511 bytes longer than the original.
Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.
Detailed instructions for F-Secure security products are available in the documentation found in the Downloads section of our Home - Global site.
You may also refer to the Knowledge Base on the F-Secure Community site for further assistance.