W97M/Assilem is a Word 97 macro 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.
W97M/Assilem.A activates on open of an infected document, and it then infects the global template and all documents that are closed after that.
Beside replication, the virus inserts a string to the active document when the number of day and the number of minutes are equal:
Twenty-two points, plus triple-word-score, plus fifty points for using all my letters. Game's over. I'm outta here.
This is the same phrase that is inserted by the W97M/Melissa virus as well.