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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Encyclopedia GetVirusCard True 0

Yama

 
Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:Yama
Technical name:JS/Yama.A
Threat level:Low
Type:Trojan
Effects:   It allows to get into the affected computer. It does not spread automatically using its own means.
Detection updated on:Nov. 13, 2002
StatisticsNo

Brief Description 

    

Yama is a Trojan, which although seemingly inoffensive, can actually carry out attacks and intrusions: screenlogging, stealing personal data, etc.

 

Yama 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.
  • File infection: it infects different types of files, which are then distributed through any of the usual means: floppy disks, email messages with attachments, Internet download, files transferred via FTP, IRC channels, P2P file sharing networks, etc.

 

Visible Symptoms 

    

Firstly, when this worm is executed, it first opens the browser at the following address:

http://www.geocities.com/yamaperu/yama.gif


Then, the file YAMA.HTA will be copied to C:\Windows folder and finally it will modify the Internet Explorer home page to the following:

http://www.geocities.com/yamaperu