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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Wallpaper.C

Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:Wallpaper.C
Technical name:Trj/Wallpaper.C
Threat level:Low
Type:Trojan
Effects:  

It changes the Desktop wallpaper and carries out several modifications in the Windows Registry, which prevent the computer from working properly. It disables several functions of the Start menu, such as Search or Run, and applications such as the Task Manager, among other actions. It reaches the computer in a file that has the icon of a folder.

Affected platforms:

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

First detected on:Nov. 16, 2007
Detection updated on:Nov. 19, 2007
StatisticsNo
Proactive protection:
Yes, using TruPrevent Technologies

Brief Description 

    

Wallpaper.C is a Trojan that carries out several modifications in the Windows Registry, which prevent the user from working with the computer as usual.

These modifications prevent the user from carrying out the following actions, among others:

  • Doing searches and running files in a fast and straight way, as it disables the options Search and Run from the Start menu.
  • Viewing the processes that are being run through the Task Manager.

Additionally, it ends several programs when it detects a window whose title contains certain text strings related to some system programs.

Wallpaper.C reaches the computer in a file with the icon of a folder, in order to deceive users making them think it is an inoffensive file. However, it does not spread automatically using its own means. It needs an attacking user's intervention in order to reach the affected computer.

Visible Symptoms 

    

Wallpaper.C is easy to recognize, it changes the Desktop wallpaper to the following image: