A simple overwriting virus, which may display the message "Divide overflow" when executed. Not very interesting.
Do not confuse the Yukon virus with the YUKON3U hoax.
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.