Detection added	Oct 04 2007 21:04 GMT
Update released	Oct 04 2007 21:45 GMT
Description added	Oct 06 2008
Behavior	Trojan

• Technical details
• Payload
• Removal instructions

This Trojan has a malicious payload. The program itself is a Windows PE DLL file. It is approximately 100KB in size.

Installation

The Trojan copies its executable file to the Windows system directory:

In order to ensure that the Trojan is launched automatically each time the system is booted, the Trojan adds a link to its executable file in the system registry:

The Trojan also creates the following registry key, and save its configuration to this key:

The Trojan also creates the following files:

The Trojan gets network configuration via the following link:

It then modifies the DNS addresses of the current active connection to those it received from the network.

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 malicious program’s process.
2. Delete the original Trojan file (the location will depend on how the program originally penetrated the victim machine).
3. Delete the following system registry key parameter values:
   [HKLM\Software\Classes\CLSID\{E4D629C3-78D3-4597-AE36-CC394E39F934}\InprocServer32]
   "default" = "%System%\mstmdm.dll"
   
   [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad]
   "UpdateCheck" = {E4D629C3-78D3-4597-AE36-CC394E39F934}
4. Delete the following registry key:
   [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\StrtdCfg]
5. Delete the following files:
   %WinDir%\1.txt
   %System%\__1.dat
   %WinDir%\system32\mswmpdat.tlb
   %WinDir%\system32\winview.ocx
   %System%\mstmdm.dll
6. Update your antivirus databases and perform a full scan of the computer (download a trial version of Kaspersky Anti-Virus).