Class
Trojan-Clicker
Platform
Win32

Parent class: TrojWare

Trojans are malicious programs that perform actions which are not authorized by the user: they delete, block, modify or copy data, and they disrupt the performance of computers or computer networks. Unlike viruses and worms, the threats that fall into this category are unable to make copies of themselves or self-replicate. Trojans are classified according to the type of action they perform on an infected computer.

Class: Trojan-Clicker

Programs classified as Trojan-Clicker are designed to access Internet resources (usually web pages). This is done either by sending appropriate commands to the browser or by replacing system files that provide “standard” addresses for Internet resources (such as the Windows hosts file). A malicious user may use Trojan-Clicker programs to: increase the number of visits to certain sites in order to boost the number of hits for online ads conduct a DoS (Denial of Service) attack on a particular server lead potential victims to viruses or Trojans.

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Platform: Win32

Win32 is an API on Windows NT-based operating systems (Windows XP, Windows 7, etc.) that supports execution of 32-bit applications. One of the most widespread programming platforms in the world.

Description

Technical Details

This TrojanClicker is written in Cbuilder.

Installation

When installed, the Trojan copies itself to the Windows system directory as rundll32.exe and registers this file in the system registry:

[HKLMSoftwareMicrosoftWindowsCurrentVersionRunControlPanel]

Payload

The Trojan changes the file msblank.htm in the Windows system directory. Once altered, masblank.htm contains a link to the site cploving.awmhost.net. The user will always be directed to this site instead of being shown a blank page in Internet Explorer.

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Find out the statistics of the vulnerabilities spreading in your region on statistics.securelist.com

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