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Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

GrayBrd.C

Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:GrayBrd.C
Technical name:Trj/GrayBrd.C
Threat level:Low
Type:Trojan
Effects:   It allows to get into the affected computer. 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:June 17, 2006
Detection updated on:June 17, 2006
StatisticsNo
Proactive protection:
Yes, using TruPrevent Technologies

Brief Description 

    

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

 

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 uses techniques included in its code to hide itself while it is active.

 

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

  • It terminates its own execution if it detects that it is being executed in a virtual machine environment, such as VMWare or VirtualPC.

 

GrayBrd.C 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

 

GrayBrd.C is easy to recognize, as it shows the following symptoms:

  • It displays false error messages when it is run.

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