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Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Legmir.VB

Threat LevelHigh threatDamageSevereDistributionNot widespread
Common name:Legmir.VB
Technical name:Trj/Legmir.VB
Threat level:Medium
Type:Trojan
Effects:   It allows to get into the affected computer. It captures certain information entered or saved by the user, with the corresponding threat to privacy. It opens one or more ports to allow remote access to the computer. 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 XP/2000/NT/ME/98/95

First detected on:April 19, 2006
Detection updated on:April 19, 2006
StatisticsNo
Proactive protection:
Yes, using TruPrevent Technologies

Brief Description 

    

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

 

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

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

 

It reduces the security level of the computer: it opens one or more ports to allow remote access to the computer and takes action that compromises user confidentiality.

 

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

  • It deletes the original file from which it was run once it is installed on the computer.
  • 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.

 

Legmir.VB 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.