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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Dafafa

Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:Dafafa
Technical name:Adware/Dafafa
Threat level:Low
Alias:Trojan-Downloader.Win32.VB.anj
Type:Spyware
Subtype: Adware
Effects:   It collects information on Internet usage and the applications installed in the computer and uses it to display pop-up advertisements.
Affected platforms:

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

First detected on:Nov. 21, 2006
Detection updated on:Nov. 21, 2006
StatisticsNo
Proactive protection:
Yes, using TruPrevent Technologies

Brief Description 

    

Adware refers to programs that display advertising using any means: pop-ups, banners, changes to the browser home page or search page, etc. The advertisements could be associated with the products or services offered by the creator of the program or by third-parties.

Adware can be installed in a number of ways, on some occasions without users' consent, and either with or without users' knowledge of its function.

 

It captures certain information entered or saved by the user, with the corresponding threat to privacy: .

 

It affects productivity, preventing tasks from being carried out:

  • In the affected computer: it converts the computer into a platform for taking malicious action surreptitiously: spam sending, launch of Denial of Service attacks, malware distribution, etc.

 

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

 

Dafafa 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 modifies system permissions in order to hide itself.

 

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

  • It prevents scanning tools from running, such as Windows Registry Editor, FileMonitor, etc.

 

Dafafa 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.