False Negative Results of Antiviruses

[x22x22]

Hello,

Normally, my application virustotal result is 3/65. But when I try to use just virtualization (others are disabled memory protection, packing, etc...) on one function result changes as 15/65 and most antiviruses threat detection is "Gen:Variant.Ursu".

What should I do to decrease these false negative results?
Do you have any suggestion?

[Admin]

Try to contact these antiviruses and inform them about this bug.

P.S. I don't see any "top" antiviruses in this list (like KAV, ESET), just only crap )

[x22x22]

Can code signing certificate helps to decrease false negative results?

[Admin]

Do you really think that these guys check a code signature in own "products"? I don't think so. Anyway, you can check it by yourself.

P.S. It seems many of them use an engine from BitDefender.

[x22x22]

Thank you, I sent an email to bitdefender.