Cantando is a simple non-resident virus which infects other COM files by placing a copy of it's own code to their end.
Cantando deletes CHKLIST.MS files from directories it infects, thus by-passing checksummer of MSAV.
Cantando activates on the 24th of December, any year. At this date it displays the following message:
* CaN_TaN_Do_v01 : "Onkos taalla kiltteja lapsia?-)"
The text is Finnish and means; "do we have any well-behaved children here?" After this the virus crashes the machine.
The whole virus is encrypted.
Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.