A question

Hi,may I know why ESET has something like a variant of...... in its virus database?Besides,I want to know why there are numbers beside the malware name?For example:Win32 Yimfocca.AF(3),I always saw those numbers in "threat center".

 

Possibly Eset's way to categorise and uniquely identify each malware (and with 000 thousands of those you need letters and numbers)

 

The numbers in parenthesis mean how many signatures were created for a particular detection.

 

Thanks for the replies.

 

Now I am clear with this. if the similarity is close enough,
the scanner may report “a variant of x,” or if less sure, it may report “probably a variant of x” besides it also helps to reduce the risk of false positives.

 

When I see “probably a variant of x”, I take that as a heuristic detection.