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.
More information on scanning and removal options available in your F-Secure product can be found in the Help Center.
You may also refer to the Knowledge Base on the F-Secure Community site for more information.