For years I have been using BitDefender as my main security suite, and running Trend Micro HouseCall as an additional check.
Just recently, whenever I download or run HouseCall, BitDefender detects Gen.Variant.Zusy.233235 in HouseCall\tmase\nmap\bonjour.exe (or, in HouseCall\tmase.zip).
I have downloaded a fresh version of HouseCall from the Trend site, but the problem persists.
So, is this a genuine infection, or a false positive?