Virus:TR/PSW.Age.IM.133.C
Date discovered:13/12/2006
Type:Trojan
In the wild:No
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Medium
Static file:Yes
File size:18.180 Bytes
MD5 checksum:8c2a06afed6325621832d9f5f654b351
VDF version:6.37.00.08 - Wednesday, December 13, 2006
IVDF version:6.37.00.08 - Wednesday, December 13, 2006

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  Kaspersky: Trojan-PSW.Win32.Agent.im
   •  F-Secure: Trojan-PSW.Win32.Agent.im
   •  Sophos: Troj/PWS-ADS
   •  Grisoft: PSW.Agent.EBH
   •  Bitdefender: Trojan.PWS.Agent.FT


Platforms / OS:
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003


Side effects:
   • Drops a malicious file
   • Registry modification
   • Steals information

 Files  It deletes the following file:
   • %SYSDIR%\drivers\etc\hosts



The following file is created:

– %SYSDIR%\bdscheca100.dll Further investigation pointed out that this file is malware, too. Detected as: TR/PSW.Age.IM.133.C

 Registry The following registry keys are added:

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\
   ShellExecuteHooks]
   • "{9C0CFA58-3A6F-51ba-9EFE-5320F4F62FB1}"=""

– [HKCR\CLSID\{9C0CFA58-3A6F-51ba-9EFE-5320F4F62FB1}]
– [HKCR\CLSID\{9C0CFA58-3A6F-51ba-9EFE-5320F4F62FB1}\InProcServer32]
   • @="%SYSDIR%\bdscheca100.dll"
   • "ThreadingModel"="Apartment"

 Backdoor Contact server:
The following:
   • http://www.tinggoo.com/zt/**********

As a result it may send some information.

Sends information about:
    • Collected information described in stealing section

 Stealing It tries to steal the following information:

– The password from the following program:
   • Zhengtu

 Injection –  It injects the following file into a process: bdscheca100.dll

    Process name:
   • %all running processes%


 File details Programming language:
 The malware program was written in MS Visual C++.


Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with the following runtime packer:
   • UPX

Description inserted by Adriana Popa on Wednesday, January 10, 2007
Description updated by Adriana Popa on Wednesday, January 10, 2007

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