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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

DNSChanger.IQ

Threat LevelHigh threatDamageSevereDistributionNot widespread
Common name:DNSChanger.IQ
Technical name:Trj/DNSChanger.IQ
Threat level:Medium
Alias:DNSChanger.a
Type:Trojan
Effects:   It allows to get into the affected computer. It affects the productivity of the computer, the network to which it’s connected or other remote sites. It changes the security settings of Internet Explorer. It downloads files from several websites. It uses stealth techniques to avoid being detected by the user. It does not spread automatically using its own means.
Affected platforms:

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

First detected on:April 16, 2006
Detection updated on:April 16, 2006
StatisticsNo
Proactive protection:
Yes, using TruPrevent Technologies

Brief Description 

    

DNSChanger.IQ is a Trojan, which although seemingly inoffensive, can actually carry out attacks and intrusions.

 

It affects productivity, preventing tasks from being carried out:

  • In the affected computer: causes system slowdowns.
  • In the local network: it generates a large amount of network activity and consumes bandwidth.

 

It reduces the security level of the computer: it changes the security settings of Internet Explorer, decreasing its security level.

 

DNSChanger.IQ accesses several websites to download files, which it then runs. These can be any type of file, although they are normally malware.

 

It uses stealth techniques to avoid being detected by the user:

  • It uses techniques included in its code to hide itself while it is active.
  • It injects itself in running processes.
  • It deletes the original file from which it was run once it is installed on the computer.

 

DNSChanger.IQ does not spread automatically using its own means. It needs an attacking user's intervention in order to reach the affected computer. The means of transmission used include, among others, floppy disks, CD-ROMs, email messages with attached files, Internet downloads, FTP, IRC channels, peer-to-peer (P2P) file sharing networks, etc.