This virus contains the text:
Thank you for running the Happy virus. Warning !!! COM-files in current directory and C:\DOS might be infected !!!!
This virus has nothing to do with the Happy99 e-mail worm, also known as Win32/Ska. See: Happy99
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.