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Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Krotten.L

Threat LevelHigh threatDamageSevereDistributionNot widespread
Common name:Krotten.L
Technical name:Trj/Krotten.L
Threat level:Medium
Type:Trojan
Effects:   It allows to get into the affected computer. It affects the productivity of the computer, the network to which it’s connected or other remote sites. It changes system permissions. It uses stealth techniques to avoid being detected by the user. It does not spread automatically using its own means.
Affected platforms:

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

First detected on:April 27, 2007
Detection updated on:April 27, 2007
StatisticsNo
Proactive protection:
Yes, using TruPrevent Technologies

Brief Description 

    

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

 

It affects productivity, preventing tasks from being carried out:

  • In the affected computer: it displays pop-up windows; causes system slowdowns.

 

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 modifies system permissions in order to hide itself.

 

Krotten.L 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.

 

Visible Symptoms

 

Krotten.L is easy to recognize, as it shows the following symptoms:

  • It displays false error messages when it is run.

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