A Trojan is a program that enables an attacker to get nearly complete control over an infected PC. Frequently used tool by malicious hackers. When this program executes, the program performs a specific set of actions. This usually works toward the goal of allowing the trojan to survive on a system and open up a backdoor.
Official
Description:
Some variants seem to be related to Webrebates.
Comment:
Agent.b is a Trojan backdoor that opens the infected machine to remote access.Agent.b is packed with two packers: Morphine and UPX. The packed file size is 38 KB and unpacked - 104 KB.
Agent.b is controlled over IRC channels. The controller can download and execute files on the infected machine.
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