Trojan Programs - Trojan Downloaders

This family of Trojans downloads and installs new malware or adware on the victim machine. The downloader then either launches the new malware or registers it to enable autorun according to the local operating system requirements. All of this is done without the knowledge or consent of the user.
The names and locations of malware to be downloaded are either coded into the Trojan or downloaded from a specified website or other Internet location.