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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

BHO.HJ

Threat LevelLow threatDamageHighDistributionNot widespread
Common name:BHO.HJ
Technical name:Adware/BHO.HJ
Threat level:Medium
Alias:Trojan.Win32.BHO.anjs,
Type:Adware
Effects:   It monitors the affected user's Internet browsing habits. It generates a large amount of network traffic activity with the consequent consumption of bandwidth. It changes the security settings of Internet Explorer. It spreads , across the Internet.
Affected platforms:

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

First detected on:Oct. 11, 2010
Detection updated on:Oct. 26, 2010
StatisticsNo

Brief Description 

    

Adware refers to programs that display advertising using any means: pop-ups, banners, changes to the browser home page or search page, etc. The advertisements could be associated with the products or services offered by the creator of the program or by third-parties.

Adware can be installed in a number of ways, on some occasions without users' consent, and either with or without users' knowledge of its function.

 

It captures certain information entered or saved by the user, with the corresponding threat to privacy: user's browsing habits.

 

  • In the local network: it generates a large amount of network activity and consumes bandwidth.

 

It reduces the security level of the computer: it changes the security settings of Internet Explorer, decreasing its security level.

 

BHO.HJ 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.
  • Via Internet, exploiting remote vulnerabilities: attacking random IP addresses, in which it tries to insert a copy of itself by exploiting one or more vulnerabilities.