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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Downloader.XLU

Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:Downloader.XLU
Technical name:VB/Downloader.XLU
Threat level:Low
Type:Virus
Effects:   It carries out damaging actions on the affected computer. It sends the information it has captured to a remote user. It listens on open ports in order to allow remote access to the computer. It uses stealth techniques to avoid being detected by the user. It spreads , across the Internet.
Affected platforms:

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

First detected on:March 10, 2010
Detection updated on:April 13, 2010
StatisticsNo

Brief Description 

    

Downloader.XLU is a virus that spreads to other computers by copying its code to other files or programs.

 

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

It sends the gathered information to a remote user by any available means: email, FTP, etc.

 

It affects productivity, preventing tasks from being carried out:

  • In the affected computer: .

 

It reduces the security level of the computer: it listens on open ports in order to control the computer remotely.

 

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

  • It injects itself in running processes.
  • It modifies system permissions in order to hide itself.

 

Downloader.XLU uses the following propagation or distribution methods:

  • Exploiting vulnerabilities with the intervention of the user: exploiting vulnerabilities in file formats or applications. To exploit them successfully it needs the intervention of the user: opening files, viewing malicious web pages, reading emails, etc.
  • Via Internet, exploiting remote vulnerabilities: attacking random IP addresses, in which it tries to insert a copy of itself by exploiting one or more vulnerabilities.

 

Visible Symptoms

 

Downloader.XLU is easy to recognize, as it shows the following symptoms:

  • It changes the homepage of Internet Explorer.