This virus infects the same file over and over until it become too large to fit in memory. It traps INT 9 (the keyboard interrupt) and when CTRL-ALT-DEL is pressed it will display the message:
DID YOU EVER DANCE WITH THE DEVIL IN THE WEAK MOONLIGHT ? PRAY FOR YOUR DISKS!! The Joker
Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.
A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:
Check for the latest database updates
First check if your F-Secure security program is using the latest updates, then try scanning the file again.
Submit a sample
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.
Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
Exclude a file from further scanning
If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
Note: You need administrative rights to change the settings.
The virus also monitors any keystrokes, activating when 2000 are reached. It will then change the colors of any text displayed on the screen. When 5000 keystrokes are reached the virus will trash the first copy of the FAT.