TR/PSW.QQPass.WM.5 - Trojan

See also

Summary

Full description

Statistics

Virus:	TR/PSW.QQPass.WM.5
Date discovered:	11/05/2007
Type:	Trojan
In the wild:	No
Reported Infections:	Low
Distribution Potential:	Low
Damage Potential:	Medium
Static file:	Yes
File size:	30.919 Bytes
MD5 checksum:	ea9ac605c283860A75fc78d05aa04602
VDF version:	6.38.01.133 - Mon, 14 May 2007 13:02 (GMT+1)
IVDF version:	6.38.01.139 - Mon, 14 May 2007 13:02 (GMT+1)

General Method of propagation:
   • No own spreading routine

Aliases:
   • Kaspersky: Trojan-PSW.Win32.QQPass.wm
   • F-Secure: Trojan-PSW.Win32.QQPass.wm
   • Eset: Win32/PSW.QQPass.VD

Platforms / OS:
   • 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
   • Steals information

Files It copies itself to the following location:
   • %PROGRAM FILES%\Internet Explorer\PLUGINS\system32.jmp

The following file is created:

– %PROGRAM FILES%\Internet Explorer\PLUGINS\System64.sys Further investigation pointed out that this file is malware, too.

It tries to download some files:

– The locations are the following:
   • http://th.wzxqy.com/**********/wl.exe
   • http://th.wzxqy.com/**********/cq.exe
   • http://th.wzxqy.com/**********/my.exe
   • http://th.wzxqy.com/**********/wm.exe
   • http://th.wzxqy.com/**********/gz.exe
   • http://th.wzxqy.com/**********/hx.exe
   • http://th.wzxqy.com/**********/qj.exe
   • http://th.wzxqy.com/**********/tl.exe
   • http://th.wzxqy.com/**********/wd.exe
   • http://th.wzxqy.com/**********/js.exe
   • http://th.wzxqy.com/**********/1.exe
   • http://th.wzxqy.com/**********/2.exe
   • http://th.wzxqy.com/**********/3.exe
   • http://th.wzxqy.com/**********/4.exe
   • http://th.wzxqy.com/**********/5.exe
   • http://th.wzxqy.com/**********/6.exe
At the time of writing this file was not online for further investigation.

Registry The following registry keys are added:

– [HKCU\Software\Tencent]

– [HKCU\Software\Tencent\Hooker]
   • First = wk

– [HKCR\CLSID\{754FB7D8-B8FE-4810-B363-A788CD060F1F}]
   • @=

– [HKCR\CLSID\{754FB7D8-B8FE-4810-B363-A788CD060F1F}\InProcServer32]
   • @ = %PROGRAM FILES%\Internet Explorer\PLUGINS\System64.sys
   • ThreadingModel = Apartment

The following registry key is changed:

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\
   ShellExecuteHooks]
   New value:
   • {754FB7D8-B8FE-4810-B363-A788CD060F1F} =

Stealing It tries to steal the following information:

– The password from the following program:
• QQ

Injection – It injects the following file into a process: system64.sys

    Process name:
   • %all running processes%

   If successful, the malware process terminates while the injected part remains active.

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

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

See a brief description here.

Description inserted by Andrei Gherman on Fri, 11 May 2007 09:53 (GMT+1)
Description updated by Andrei Gherman on Mon, 14 May 2007 12:57 (GMT+1)

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