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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Downloader.IBJ

Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:Downloader.IBJ
Technical name:Trj/Downloader.IBJ
Threat level:Low
Alias:Trojan-Downloader.Win32.Delf.aiy
Type:Trojan
Effects:   It allows to get into the affected computer. 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 uses anti-monitoring techniques in order to prevent it being detected by antivirus companies. It does not spread automatically using its own means.
Affected platforms:

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

First detected on:March 14, 2006
Detection updated on:March 14, 2006
StatisticsNo

Brief Description 

    

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

 

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

 

Downloader.IBJ 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 injects itself in running processes.

 

It uses several methods in order to avoid detection by antivirus companies:

  • It terminates its own execution if it detects that it is being executed in a virtual machine environment, such as VMWare or VirtualPC.

 

Downloader.IBJ 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.