Trnt.exe is a .exe that can be found in Kaguya's PC at the end of the Kaguya Trials DLC. It is an alternate name of TorrentStreamInjector and works exactly the same. It has no added benefits nor downsides, each taking 5 seconds to open the port, and 10 seconds to spin down. Its just a strangely named TorrentStreamInjector.exe.