Aliases

Trojan-PSW.Win32.Coced.219.b (Kaspersky Lab) is also known as: Trojan.PSW.Coced.219.b (Kaspersky Lab), IRC/Pws.gen (McAfee),   Trojan Horse (Symantec),   Trojan.PWS.Coced.219 (Doctor Web),   Troj/Rek (Sophos),   PWS:Win32/Coced.2_19.B (RAV),   TROJ_STEALTH.D (Trend Micro),   TR/Coced-219 (H+BEDV),   W32/Backdoor.Stealth (FRISK),   Win32:Trojan-gen. (ALWIL),   Trojan.PSW.Coced.219.B (SOFTWIN),   Trojan.PSW.Coced.219.B (ClamAV),   Trj/Coced.219 (Panda),   Win32/PSW.Coced.219.B (Eset)

Description added	Jun 08 2007
Behavior	PSW Trojan

• Technical details
• Payload
• Removal instructions

This Trojan is one of a family of Trojans which steals user passwords. It is designed to steal confidential data. It is a Windows PE EXE file. The file is 208,901 bytes in size. It is written in Visual C++.

Installation

Once launched, the Trojan copies its executable file to the Windows system directory:

%System%\msrun.exe

The Trojan also extracts the following file from its body (this file is 197,634 bytes in size):

%Temp%\Winvrfy.exe

The Trojan changes the values of the following system registry keys:

[HKCU\Software\Mirabilis\ICQ\Agent\Apps\ICQ]
"Enable" = "yes"
"Path" = "<path to Trojan executable file>"
"Startup" = ""
"Parameters" = ""
[HKCU\Software\Mirabilis\ICQ\Agent]
"Launch Warning" = "No"

The Trojan harvests the paramenter values of the following registry sub-key:

[HKCU\Software\Mirabilis\ICQ\Owners]

The Trojan also harvests information about modem connections used by the system to access the Internet. It also harvests passwords using WNetEnumCachedPasswords).

The Trojan sends harvested data to ***ihvseh@iname.com, the remote malicious user's email address. The Trojan uses mail.computer.com to send outgoing messages.

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 system registry key parameters:

   [HKCU\Software\Mirabilis\ICQ\Agent\Apps\ICQ]
   "Enable" = "yes"
   "Path" = "<path to Trojan executable file>"
   "Startup" = ""
   "Parameters" = ""
   
   [HKCU\Software\Mirabilis\ICQ\Agent]
   "Launch Warning" = "No"

4. Delete all files created by the Trojan:

   %Temp%\Winvrfy.exe
   %System%\msrun.exe

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