Trojan-Downloader.Win32.Small.dge

Technical Details
Payload
Removal instructions

Technical Details

This Trojan downloads other programs via the Internet and launches them on the victim machine without the user’s knowledge or consent. It is a Windows PE EXE file. It is approximately 6KB in size.

Payload

Once launched, the Trojan downloads files from the following URLs:

http://www.cabary.net/comein/get_exe5.php
http://www.cabary.net/comein/get_exe2.php
http://www.cabary.net/comein/get_exe3.php
http://www.cabary.net/comein/get_exe4.php
http://www.cabary.net/comein/get_exe.php

It saves these files to the Windows system directory under the following names:

%System%\lr86.exe
%System%\lr87.exe
%System%\lr88.exe
%System%\lr89.exe
%System%\lr85.exe

Files will be launched for execution as soon as they have been downloaded and saved.

At the time of writing, the links above were not working.

Once it has completed its infection routine, the Trojan deletes its executable file.

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. Use Task Manager to terminate the Trojan process.
2. Delete the original Trojan file (the location will depend on how the program originally penetrated the victim machine).
3. Delete the following files:

   %System%\lr86.exe
   %System%\lr87.exe
   %System%\lr88.exe
   %System%\lr89.exe
   %System%\lr85.exe

4. Update your antivirus databases and perform a full scan of the computer (download a trial version of Kaspersky Anti-Virus).