Name: IRC.Lambot Category: Backdoor Advice: Remove Risk: Severe Risk Severe threats typically are remotely exploitable vulnerabilities, which can lead to system compromise. Successful exploitation does not normally require any interaction and exploits are in the wild. There exists a high possibility of potential system damage or security flaw. Attacker has complete control over your computer or install new software on your machine. Description: Signatures: process: mirc.exe: MD5 Hash: 21ee29a058334bd956b.. Type: Backdoor - A backdoor is a means of access to a computer program that bypasses any computer security mechanisms. Computer attackers often use backdoors as part of an exploit or Trojan to gain access to a user's computer. In some cases, a worm is designed to take advantage of a backdoor created by an earlier attack.