MRAID software download link ( https://www.areca.us/support/s_windows/utility/install_mraid_x64.zip )

The archttp has a low level service which will inquiry raid card status to be able to alarm on time. This background service should be the reason why your antivirus software considered this installer contained trojan horse. If you have concern on using the archttp, you can use the ethernet port on the card instead. The raid card onboard ethernet port is independent of any OS, no additional software installation needed.