NIS false positive detect on 2 sw packages ?

I’m on NIS 22.5.2.15

I have been using Vdownloader (free) [http://vdownloader.com/] and nirsoft free tools NetworkTrafficView [http://www.nirsoft.net/utils/index.html#network_utils] for a while and recently NIS is killing them - it says they contain WS.Reputation.1.

Is this correct or a false positive ? If a false positive, how do I fix the issue ?