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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Downloader.MRV

Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:Downloader.MRV
Technical name:Trj/Downloader.MRV
Threat level:Low
Type:Trojan
Effects:   It allows to get into the affected computer. It generates a large amount of network traffic activity with the consequent consumption of bandwidth. It changes system permissions. 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:Feb. 4, 2007
Detection updated on:Feb. 4, 2007
StatisticsNo
Proactive protection:
Yes, using TruPrevent Technologies

Brief Description 

    

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

 

  • 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 system permissions, decreasing the security level.

 

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.

 

Downloader.MRV 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.