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Published Aug 31, 2007 | Updated Sep 15, 2017

Backdoor:Win32/IRCbot.OU!dll

Detected by Microsoft Defender Antivirus

Aliases: Win32/Checkout.G (CA) Backdoor.Win32.IRCBot.acu (Kaspersky) W32/Smallworm.ABZ (Norman) Troj/Agent-FZK (Sophos) W32.Mubla.B (Sunbelt Software) W32.Mubla.B (Symantec) BKDR_IRCBOT.AHK (Trend Micro)

Summary

Backdoor:Win32/IRCBot.OU!dll is a component of Backdoor:Win32/IRCBot.OU, a Windows Messenger worm with backdoor Trojan capabilities. Backdoor:Win32/IRCBot.OU drops other malicious software and opens a backdoor on the infected computer to connect to IRC servers. The Trojan can maintain multiple IRC server connections simultaneously to receive commands from attackers.
Backdoor:Win32/IRCBot.OU may download and install additional malicious software, thus manual removal is not recommended. To detect and remove this Trojan and other malicious software that may have been installed, run a full-system scan with an up-to-date antivirus product such as the Microsoft Safety Scanner (http://go.microsoft.com/fwlink/?LinkId=212742). For more information, visit http://www.microsoft.com/athome/security/downloads/default.mspx
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