This is actually a group of non-related viruses, which have two features in common - they are all shorter than 50 bytes, and infect programs by overwriting them. The viruses are mostly an experiment in tight coding, and are too obvious to be a serious threat. Currently the shortest virus is only 22 bytes.
Like all other overwriting viruses, they cannot be properly disinfected, as infection destroys the original program, so the only solution is to delete all infected files.
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:Hastings
This virus is 200 bytes long, but most of that is just a long text message.
Variant:NKOTB (Cover Girl, Psychogenius)
Much longer than the other variants, but most of it is just a silly text message, which starts like this:
Oh, oh, oh, She's my cover girl, Oh, oh, oh, oh, oh, oh Oh, oh, oh, She's my cover girl, Oh, oh, oh, oh, oh, oh Cover Girl by The New Kids On The Block Hangin' Tough (c) 1988 CBS Records
Variant:Banana
Yet another silly virus - 139 bytes long and contains the text:
BANANA, coded by Morbid Angel -92 in Stockholm/Sweden
Variant:Hanger
Obvious, non-interesting variant.
might be a good idea to search all files for infection, as some members of Trivial family will corrupt data files by overwriting them with their own code. F-Secure anti-virus products are able to locate these corrupted data files so you can replace them with good copies.