Trojans are malicious applications that pose themselves as legitimate software in order to trick users to install them. Once on the victim's machine, it may run any number of malicious process to steal vital information or inflict damage to other software.
From the Website:
The cheapest and most complete daemon around for Windows 95/98/Me and WindowsNT/2K/XP. Remote control your computer by the network/internet with a telnet client. (FTP, shutdown/reboot, execute, schedule commands etc.