This virus activates on Fridays, between 10 PM and 11PM, making all infected files appear to be named PREGNANT.!!! when the user gives a DIR command.
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 scanning & removal options
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.