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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Encyclopedia GetVirusCard True 0

Lohack.B

 
Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:Lohack.B
Technical name:W32/Lohack.B
Threat level:Low
Type:Worm
Effects:  It does not have any destructive effects. It spreads via e-mail, through the P2P file sharing program KaZaA and across shared network resources.

Affected platforms:

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

First detected on:July 15, 2003
Detection updated on:March 16, 2005
StatisticsNo

Brief Description 

    

Lohack.B is a worm that does not have any destructive effects that spreads via e-mail, through the P2P (peer-to-peer) file sharing program KaZaA and across shared network drives.

The e-mail message carrying Lohack.B is always in Spanish and has extremely variable characteristics.  The content of many of these messages refers to the Spanish Information Society and E-mail Services Law. Furthermore, Lohack.B tricks users into thinking that the message has been sent from a trustworthy source by using one of the following addresses as the sender of the message:
Ministerio de Ciencia y Tecnología (info@myct.es)
Panda Antivirus (info@myct.es)

It also copies itself under variable names to the shared directory of KaZaA and the shared network resources the affected computer can access.

Lohack.B exploits a vulnerability in Internet Explorer (versions 5.01 and 5.5), which allows it to automatically run when the message carrying the worm is viewed in the Preview Pane.

Visible Symptoms 

    

Lohack.B is easy to recognize, as once it has infected a computer, it displays a message in Spanish that refers to the Information Society and E-mail Services Law. In order to see this message, click here.