A Dropper is a software application or part of the program which is designed to install hostile code onto the system of the targeted computer. Usually, a Dropper comes bundled as part of a virus or trojan.
An apparently useful and innocent program containing additional hidden code which allows the unauthorized collection, exploitation, falsification, or destruction of data. When this program executes, the program performs a specific set of actions, usually working toward the goal of allowing the trojan to survive on a system and open up a backdoor.
