This virus infects EXE files when they are executed.
Enjoy activates on the 31st of October. At this time it displays this encrypted message:
Welcome to the ultimate computer virus! This program is not destructive so I hope you'll enjoy it. But don't think this was it now... The evolution goes on!
Otherwise, Enjoy does nothing but replicates.
Enjoy was found in the wild in Netherlands in June 1996.
Depending on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the suspect file, or ask you for a desired action.
More information on the 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.