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Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:Nabload.DSB
Technical name:Trj/Nabload.DSB
Threat level:Low

It installs an Internet Explorer browser which replaces thoe one installed in the affected system in order to monitor the websites accessed by users and to harvest all kind of confidential data. It reaches the computer in a PowerPoint presentation in order to pass itself off as an unoffensive file.

Affected platforms:

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

First detected on:July 29, 2010
Detection updated on:Aug. 4, 2010

Brief Description 


Nabload.DSB is a Trojan that downloads to the computer several components designed to steal confidential information from users, like passwords, banking data or usernames, among others.

In order to do so, it installs an Internet Explorer browser which replaces the one installed in the system. This way, it monitors the websites accessed by users and collects the information entered in them, posing a threat to users' privacy.

Nabload.DSB reaches the computer in a file which seems a PowerPoint presentation in order to deceive users, as it is actually an executable file.

Visible Symptoms 


Nabload.DSB is easy to recognize, as it reaches the computer in a PowerPoint presentation with the following appearance:

Icon of Nabload.DSB

This file can reach the computer through different means: email, social networks and instant messaging programs, among others, in a message similar to the following:

Message in which Nabload.DSB reaches the computer

When this file is run, a slideshow presentation is displayed and the Trojan is installed in the computer.

The following image belongs to one of the slideshows:

One of the slideshows of the presentation