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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Ircbot.ZN

Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:Ircbot.ZN
Technical name:W32/Ircbot.ZN.worm
Threat level:Low
Alias:Backdoor.Win32.IRCBot.qu
Type:Worm
Effects:  

It connects to an IRC server in order to receive remote control commands. It exploits the vulnerabilities LSASS, RPC DCOM and UPnP, in order to spread to as many computers as possible.

Affected platforms:

Windows 2003/XP/2000/NT/ME/98/95

First detected on:June 5, 2006
Detection updated on:June 6, 2006
StatisticsNo
Proactive protection:
Yes, using TruPrevent Technologies

Brief Description 

    

Ircbot.ZN is a worm that connects to several IRC servers in order to receive remote control commands, acting as a backdoor. It can be instructed to download files, execute commands, list processes, etc.

Additionally, Ircbot.ZN installs its own FTP (File Transfer Protocol) server on the affected computer in order to spread to other systems.

Ircbot.ZN uses different means to spread:

  • It makes copies of itself in the shared network resources it gains access to.
  • It exploits the vulnerabilities LSASS, RPC DCOM and UPnP to spread across the Internet.

 

It is highly recommendable to download the security patches for the vulnerabilities LSASS, RPC DCOM and UPnP from the Microsoft website.

Visible Symptoms 

    

Ircbot.ZN is difficult to recognize, as it does not display any messages or warnings that indicate it has reached the computer.