There is no virus by this name. Distributed.net is an organization that distributes a client that can be used to calculate huge calcutions when a large number of machines is running the client.
Some users have created trojan horses to drop this client to unsuspecting users, effectively using their machine for their own needs.
For more information, see:
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.
Earlier versions of F-Secure Anti-Virus detected Bymer worm as 'Worm.RC5'. The description of Bymer worm can be found on our virus information pages:
https://www.europe.f-secure.com/v-descs/bymer.shtml
The RC5 client's name dropped by Bymer worm is DNETC.EXE. In case you have Bymer worm infection, you have to delete both worm's file and RC5 client from your system. See Bymer worm description for more info.
[F-Secure Corp. Virus Research Team, 2000-2001]