Trojan-Clicker.Win32.Small.f

Technical Details

This Trojan opens a range of Internet sites without the knowledge or consent of the user. It is a Windows DLL file. The file is approximately 10KB in size. It is packed using UPX. The unpacked file is approximately 25KB in size.

Installation

When registering, the DLL file is installed to the system as a Browser Helper Object, creating the following registry keys:

Payload

The Trojan tracks which sites the user visits when using Internet Explorer. When certain sites are visited the Trojan will redirect the user to sites belonging to the remote malicous user by substituting IP addresses in the following file:

%System%\drivers\etc\hosts

The list of sites the user will be redirected to is downloaded from the remote malicious user’s site.

Removal instructions

If your computer does not have an up-to-date antivirus, or does not have an antivirus solution at all, follow the instructions below to delete the malicious program:

1. Revert the DLL file registration by executing the following command:

   regsvr32.exe /u <name of Trojan file>

2. Delete the original Trojan file (the location will depend on how the program originally penetrated the victim machine).
3. Update your antivirus databases and perform a full scan of the computer (download a trial version of Kaspersky Anti-Virus).