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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Damon.B

Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:Damon.B
Technical name:MSH/Damon.B
Threat level:Low
Type:Virus
Effects:  

It is a cross infection virus that infects BAT, CMD and MSH files adding its code to the end of them.

Affected platforms:

Windows 2003

First detected on:Aug. 5, 2005
Detection updated on:Aug. 5, 2005
StatisticsNo
Country of origin:AUSTRIA

Brief Description 

    

Damon.B is a proof of concept virus that uses the technique known as cross infection in order to infect files with a BAT, CMD and MSH extension.

Using cross infection, Damon.B can replicate by running from the batch scripting interpreter or the MSH interpreter. In order to do so, the batch code is blended with the MSH code, and its execution will be different depending on the shell in which it is run.

MSH (Microsoft Shell), also known as Monad, is a shell that will replace earlier shells, such as cmd and command. New characteristics of MSH include the capability to interact with .NET objects, among others.

This shell will be included in the Windows Vista operating system, but not by default.

Visible Symptoms 

    

Damon.B is difficult to recognize, as it does not display any messages or warnings that indicate it has reached the computer.