How to know if a virus is for real?

Hello

I used CIS to check an appplication I downloaded from the Net, and it says one of the EXEs is supposed to be infected with a virus “Application.Win32.HackTool.dUP2.~BAAZ@779020”.

Generally speaking, how do we know if this is a real virus or a false positive?

Thank you.

Please see this article about How to Tell if a File is Malicious. Please let me know if you have any questions.

Thanks.

Thanks for the link.