Virus:TR/PSW.QQPass.KB.6
Date discovered:03/01/2007
Type:Trojan
In the wild:No
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Low to medium
Static file:Yes
File size:44.567 Bytes
MD5 checksum:211906c1daa0af3724385a37d0d23a7b
VDF version:6.35.01.172
IVDF version:6.35.01.176 - Monday, September 4, 2006

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  Kaspersky: Trojan-PSW.Win32.QQPass.kb
   •  Sophos: Troj/QQPass-ABX
   •  Grisoft: PSW.Generic2.FTI
   •  Eset: Win32/PSW.QQPass.KB
   •  Bitdefender: Backdoor.Maxi.A


Platforms / OS:
   • Windows 95
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003


Side effects:
   • Downloads files
   • Drops a malicious file
   • Registry modification

 Files It copies itself to the following locations:
   • %PROGRAM FILES%\Common Files\Microsoft Shared\MSINFO\sysinfo.exe
   • %PROGRAM FILES%\Common Files\Microsoft Shared\MSINFO\6hackol.com



The following file is created:

– %PROGRAM FILES%\Common Files\Microsoft Shared\MSINFO\qqdsq2.lmz Further investigation pointed out that this file is malware, too. Detected as: TR/PSW.QQShou.IE

 Registry The following registry keys are added:

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\
   ShellExecuteHooks]
   • "{08315C1A-9BA9-4B7C-A432-26885F9QQDSQ}"=""

– [HKCR\CLSID\{08315C1A-9BA9-4B7C-A432-26885F9QQDSQ}]
   • @=""

– [HKCR\CLSID\{08315C1A-9BA9-4B7C-A432-26885F9QQDSQ}\InProcServer32]
   • @="%PROGRAM FILES%\Common Files\Microsoft Shared\MSINFO\qqdsq2.lmz"
   • "ThreadingModel"="Apartment"



The following registry key is changed:

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
   New value:
   • "Shell"="Explorer.exe "%PROGRAM FILES%\Common Files\Microsoft Shared\MSINFO\sysinfo.exe""

 Backdoor Contact server:
All of the following:
   • http://www.jump.oiwin.cn/**********
   • http://www.dl3.jpqqd.**********

Once connected it will retrieve an additional list of servers.
This is done via the HTTP GET request on a PHP script.

 File details Programming language:
 The malware program was written in Delphi.

Description inserted by Monica Ghitun on Wednesday, January 3, 2007
Description updated by Monica Ghitun on Wednesday, January 3, 2007

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