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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Encyclopedia GetVirusCard True 0

Lohack.C

 
Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:Lohack.C
Technical name:W32/Lohack.C.worm
Threat level:Low
Type:Worm
Effects:  It moves the mouse around the screen, obstructing the tasks performed. It spreads via e-mail and across networks.

Affected platforms:

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

First detected on:Oct. 22, 2003
Detection updated on:March 16, 2005
StatisticsNo

Brief Description 

    

Lohack.C is a worm that spreads via e-mail and networks.

The e-mail message carrying Lohack.C 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.C 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 (OXYGEN@pandasoftware.es )

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

In addition, Lohack.C moves the mouse around the screen, obstructing the tasks performed.

Visible Symptoms 

    

Lohack.C is easy to recognize when it reaches the computer via-email, as the message has the following characteristics:

  • It counterfeits the address of the sender, as it displays one of the following addresses:
    Ministerio de Ciencia y Tecnología (info@myct.es)
    Panda Antivirus (OXYGEN@pandasoftware.es )
  • The message has an attached file with an EXE extension, which has the following icon:

Once the attached file is run, Lohack.C displays a message in Spanish that refers to the Information Society and E-mail Services Law:


In order to see this message, click here.

In addition, Lohack.C moves the mouse around the screen without user intervention, obstructing the tasks performed.