There is no virus by this name, but we occasionally get support queries about this when people find a file called UNWISE.EXE from their Windows directory. This is an uninstall utility belonging to a commercial setup library kit. It is not a virus.
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.