Backdoor-CXM

Backdoor-CXM is a Remote Access Trojan consisting of a server component and a client component.

Server Component:

When the server component is executed, the Trojan drops the following file:

• %system%\federal.exe

The following Registry entries are modified, so the Trojan runs on startup:

• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\
  CurrentVersion\Run\Library.dll: "C:\WINDOWS\System32\federal.exe"

Once running, the server component opens up TCP port 1990, awaiting commands from the attacker using the client component.

Note: %System% is a variable location and refers to the windows system directory

Client Component:

The client component runs on the attackers computer, and connects to the server component on the victims machine remotely.

The following are a list of the functions that are available to the attacker:

• info - get victims computername
• opencd - open victims cd rom
• bomb - bomb victim with notepad
• restart - restart victims machine
• url - start "www.f**k.com"
• down - shutdown remote machine
• label - rename label to "hacked by Khaled" (Drive C will be renamed)

Miscellaneous Information:

• This Trojan is written in C
• The authors intended name for the Trojan is Backdoor KhaloBot

• The following port(s) open: 1990
• Desktop firewall program alerting that a foreign program is trying to access the internet
• Presence of the files/Registry keys mentioned above
• Unexplained activity on the victim's machine indicative of someone having remote access via the client component

Trojans do not self-replicate. They are spread manually, often under the premise that the executable is something beneficial. Distribution channels include IRC, peer-to-peer networks, newsgroup postings, email, etc.

All Users:

Please use the following instructions for all supported versions of Windows to remove threats and other potential risks:

1.Disable System Restore .

2.Update to current engine and DAT files for detection and removal.

3.Run a complete system scan.

Modifications made to the system Registry and/or INI files for the purposes of hooking system startup, will be successfully removed if cleaning with the recommended engine and DAT combination (or higher).

1. Please go to the Microsoft Recovery Console and restore a clean MBR.

On windows XP:

Insert the Windows XP CD into the CD-ROM drive and restart the computer.
When the "Welcome to Setup" screen appears, press R to start the Recovery Console.
Select the Windows installation that is compromised and provide the administrator password
Issue 'fixmbr' command to restore the Master Boot Record
Follow onscreen instructions
Reset and remove the CD from CD-ROM drive.