This is a variant of the Jerusalem virus from Australia. Some reports indicate it may cause a slowdown of the system, but this has not been confirmed. The major difference between this virus and the standard Jerusalem virus is the use of a simple encryption in the Slow virus.
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.
Variant:Scott's Valley
A 2126 byte variant from California.
Variant:Mule
This variant is much longer, 4112/4117 bytes, and uses a different encryption method. As it was found in Australia, and resembles the Slow virus, it is classified as a variant, although it has not been analyzed yet.