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.
Official
Description:
The Trojan use Port "15000" for Main Server, and gives (near) complete control of the computer to the attacker: log keystrokes, take screenshots, get configuration information, modify file system and even iniate chats.