dwh*.exe Trojan.Gen Virus occurs frequently

Norton 360 for Windows
1

Hello,

Recently, Symentec Endpoint Protection reports dwh*.exe Trojan virus frequently, like

dwh1166.exe        Trojan.Gen

dwh4321.exe        Trojan.Horse

dwh9faf.exe          Trojan.Gen.2

My Symentec Endpoint Protection version is 12.1.1000.157

Could someone help to remove these virus?

Thanks.