When this virus activates it will attempt to format the beginning of each drive on the system, destroying the FAT and the root directory.
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.
This variant is slightly larger, and it contains one additional feature, which is limited "stealth" ability, as no increase in size is visible when a DIR command is given if the virus is active.
This 2877 byte variant adds encryption and the ability to infect .EXE files.