Backdoor.Win32.Bredolab.ehc

Technical Details
Payload
Removal instructions

Technical Details

This Trojan provides a malicious user with remote access to the infected computer. It is a Windows application (PE EXE file). It is 21 504 bytes in size. The program is packed using an unknown packer. The unpacked file is approximately 16 KB in size. It is written in C++.

Payload

Once launched, the Trojan decrypts its body and then downloads files from the following URL addresses:

http://195.***.79/cash2_yeoiglkq.exe
http://195.***.79/setup.exe
http://94.***.38/cash2_yeoiglkq.exe
http://94.***.38/setup.exe

At the time of writing, these links were inactive.

The Trojan saves the downloaded files under the following names:

%WinDir%\Temp\_ex-68.exe
%WinDir%\Temp\_ex-08.exe

The Trojan then launches the downloaded files for execution and ceases running.

Removal instructions

If your computer does not have an antivirus, and is infected by this malicious program, follow the instructions below to delete it:

1. Delete the original Trojan file (its location will depend on how the program originally penetrated the infected computer).
2. Delete the following files:

   %WinDir%\Temp\_ex-68.exe
   %WinDir%\Temp\_ex-08.exe
   

3. Perform a full scan of the computer using Kaspersky Anti-Virus with up-to-date antivirus databases (download a trial version).