ALIASES:

Trojan:Win32/Meredrop (Microsoft); [6.nsis]:Generic Downloader.x!diq (McAfee); Trojan.ADH (Symantec); Trojan-Downloader.Win32.Genome.apuc (Kaspersky); Trojan.Win32.Agent.a (fs) (Sunbelt); Trojan:W32/Agent.DLBW (FSecure)

 PLATFORM:

Windows 2000, XP, Server 2003

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size: 2,539,633 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 18 Nov 2011

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This Trojan creates the following folders:

  • %System Root%\DOCUME~1
  • %System Root%\DOCUME~1\ADMINI~1
  • %User Profile%\LOCALS~1
  • %User Temp%\nsx2.tmp
  • %Program Files%\baidubar
  • %System Root%\Documents and Settings
  • %System Root%\Documents and Settings\Administrator
  • %User Temp%\nsf5.tmp
  • %User Profile%\Application Data
  • %User Profile%\Application Data\Baidu
  • %User Profile%\Baidu\Toolbar
  • %User Profile%\Toolbar\Custom Buttons
  • %Program Files%\Baidu
  • %Program Files%\Baidu\Toolbar
  • %Program Files%\Baidu\Toolbar\BaiduBarX_Tmp
  • %Start Menu%\Programs\?????
  • %User Temp%\nsgA.tmp

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.. %User Profile% is the current user's profile folder, which is usually C:\Windows\Profiles\{user name} on Windows 98 and ME, C:\WINNT\Profiles\{user name} on Windows NT, and C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003.. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.. %Program Files% is the default Program Files folder, usually C:\Program Files.. %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Profiles\{user name}\Start Menu on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu on Windows NT and C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000, XP, and Server 2003.)

Autostart Technique

This Trojan registers itself as a BHO to ensure its automatic execution every time Internet Explorer is used by adding the following registry keys:

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{77FEF28E-EB96-44FF-B511-3185DEA48697}

Other System Modifications

This Trojan deletes the following files:

  • %User Temp%\nsh1.tmp
  • %User Temp%\nsx2.tmp
  • %User Temp%\nsq3.tmp
  • %User Temp%\nsf5.tmp
  • %User Temp%\nsg6.tmp
  • %System%\drivers\BDGuard.SYS
  • %System%\bdguard1.dat
  • %User Profile%\Toolbar\iexp_log.txt
  • %User Profile%\Toolbar\medialog.dat
  • %User Temp%\nsw8.tmp
  • %User Temp%\nsgA.tmp

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.. %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.. %User Profile% is the current user's profile folder, which is usually C:\Windows\Profiles\{user name} on Windows 98 and ME, C:\WINNT\Profiles\{user name} on Windows NT, and C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003.)

It deletes the following folders:

  • %User Temp%\nsx2.tmp\

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.)

It adds the following registry keys:

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar

HKEY_LOCAL_MACHINE\Software\Baidu\
BaiduToolbar

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
BaiduBarX

HKEY_CURRENT_USER\software\baidu\
BaiduToolbar\NoAD

HKEY_CURRENT_USER\software\baidu\
BaiduToolbar\NoAD\Page_Allow

HKEY_CURRENT_USER\software\baidu\
BaiduToolbar\NoAD\Page_Block

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\SearchScopes\{B8E20CD7-BAC2-4820-9AA6-1060B3AF25E2}

HKEY_CLASSES_ROOT\BaiduBarX.ToolBand.1

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
BaiduBarX.ToolBand.1\CLSID

HKEY_CLASSES_ROOT\BaiduBarX.ToolBand

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
BaiduBarX.ToolBand\CLSID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
BaiduBarX.ToolBand\CurVer

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{B580CF65-E151-49C3-B73F-70B13FCA8E86}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{B580CF65-E151-49C3-B73F-70B13FCA8E86}\ProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{B580CF65-E151-49C3-B73F-70B13FCA8E86}\VersionIndependentProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{B580CF65-E151-49C3-B73F-70B13FCA8E86}\InprocServer32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{B580CF65-E151-49C3-B73F-70B13FCA8E86}\TypeLib

HKEY_CLASSES_ROOT\BaiduBar.Tool.1

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
BaiduBar.Tool.1\CLSID

HKEY_CLASSES_ROOT\BaiduBar.Tool

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
BaiduBar.Tool\CLSID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
BaiduBar.Tool\CurVer

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{A7F05EE4-0426-454F-8013-C41E3596E9E9}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{A7F05EE4-0426-454F-8013-C41E3596E9E9}\ProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{A7F05EE4-0426-454F-8013-C41E3596E9E9}\VersionIndependentProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{A7F05EE4-0426-454F-8013-C41E3596E9E9}\Programmable

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{A7F05EE4-0426-454F-8013-C41E3596E9E9}\InprocServer32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{A7F05EE4-0426-454F-8013-C41E3596E9E9}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Ext

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Ext\
PreApproved

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Ext\
PreApproved\{A7F05EE4-0426-454F-8013-C41E3596E9E9}

HKEY_CLASSES_ROOT\BaiduBarX.BandIE.1

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
BaiduBarX.BandIE.1\CLSID

HKEY_CLASSES_ROOT\BaiduBarX.BandIE

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
BaiduBarX.BandIE\CLSID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
BaiduBarX.BandIE\CurVer

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{77FEF28E-EB96-44FF-B511-3185DEA48697}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{77FEF28E-EB96-44FF-B511-3185DEA48697}\ProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{77FEF28E-EB96-44FF-B511-3185DEA48697}\VersionIndependentProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{77FEF28E-EB96-44FF-B511-3185DEA48697}\InprocServer32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{77FEF28E-EB96-44FF-B511-3185DEA48697}\TypeLib

HKEY_CLASSES_ROOT\BaiduBarEx.BDHomePage.4

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
BaiduBarEx.BDHomePage.4\CLSID

HKEY_CLASSES_ROOT\BaiduBarEx.BDHomePage.3

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
BaiduBarEx.BDHomePage.3\CLSID

HKEY_CLASSES_ROOT\BaiduBarEx.BDHomePage.2

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
BaiduBarEx.BDHomePage.2\CLSID

HKEY_CLASSES_ROOT\BaiduBarEx.BDHomePage.1

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
BaiduBarEx.BDHomePage.1\CLSID

HKEY_CLASSES_ROOT\BaiduBarEx.BDHomePage

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
BaiduBarEx.BDHomePage\CLSID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
BaiduBarEx.BDHomePage\CurVer

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{E5D5D4A1-17F0-41D7-B1C6-0979F91E6F46}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{E5D5D4A1-17F0-41D7-B1C6-0979F91E6F46}\ProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{E5D5D4A1-17F0-41D7-B1C6-0979F91E6F46}\VersionIndependentProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{E5D5D4A1-17F0-41D7-B1C6-0979F91E6F46}\Programmable

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{E5D5D4A1-17F0-41D7-B1C6-0979F91E6F46}\InprocServer32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{E5D5D4A1-17F0-41D7-B1C6-0979F91E6F46}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Ext\
PreApproved\{E5D5D4A1-17F0-41D7-B1C6-0979F91E6F46}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{D12F94FA-FC9A-41F7-B808-7FBB419DD7A6}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{D12F94FA-FC9A-41F7-B808-7FBB419DD7A6}\1.0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{D12F94FA-FC9A-41F7-B808-7FBB419DD7A6}\1.0\
FLAGS

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{D12F94FA-FC9A-41F7-B808-7FBB419DD7A6}\1.0\
0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{D12F94FA-FC9A-41F7-B808-7FBB419DD7A6}\1.0\
0\win32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{D12F94FA-FC9A-41F7-B808-7FBB419DD7A6}\1.0\
HELPDIR

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{7EF05EFF-0E62-4040-8D81-73A10D8DE60F}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{7EF05EFF-0E62-4040-8D81-73A10D8DE60F}\ProxyStubClsid

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{7EF05EFF-0E62-4040-8D81-73A10D8DE60F}\ProxyStubClsid32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{7EF05EFF-0E62-4040-8D81-73A10D8DE60F}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{4C2BFEC9-F03C-4F74-932E-5723E603B4AC}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{4C2BFEC9-F03C-4F74-932E-5723E603B4AC}\ProxyStubClsid

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{4C2BFEC9-F03C-4F74-932E-5723E603B4AC}\ProxyStubClsid32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{4C2BFEC9-F03C-4F74-932E-5723E603B4AC}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{D158174C-004B-4A2E-9410-5442C10C60D2}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{D158174C-004B-4A2E-9410-5442C10C60D2}\ProxyStubClsid

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{D158174C-004B-4A2E-9410-5442C10C60D2}\ProxyStubClsid32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{D158174C-004B-4A2E-9410-5442C10C60D2}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
AppID\{7A33CE9E-4F33-4B4E-B263-6AEEAB6C3DC2}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
AppID\BarBroker.EXE

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Low Rights

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{7A33CE9E-4F33-4B4E-B263-6AEEAB6C3DC2}

HKEY_CLASSES_ROOT\BarBroker.BDBroker.1

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
BarBroker.BDBroker.1\CLSID

HKEY_CLASSES_ROOT\BarBroker.BDBroker

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
BarBroker.BDBroker\CLSID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
BarBroker.BDBroker\CurVer

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5BECD27B-DCF5-4DEF-B066-486A47245C03}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5BECD27B-DCF5-4DEF-B066-486A47245C03}\ProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5BECD27B-DCF5-4DEF-B066-486A47245C03}\VersionIndependentProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5BECD27B-DCF5-4DEF-B066-486A47245C03}\LocalServer32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5BECD27B-DCF5-4DEF-B066-486A47245C03}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{3A8C9D89-3271-45F4-98C0-56B0F5A16172}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{3A8C9D89-3271-45F4-98C0-56B0F5A16172}\1.0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{3A8C9D89-3271-45F4-98C0-56B0F5A16172}\1.0\
FLAGS

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{3A8C9D89-3271-45F4-98C0-56B0F5A16172}\1.0\
0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{3A8C9D89-3271-45F4-98C0-56B0F5A16172}\1.0\
0\win32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{3A8C9D89-3271-45F4-98C0-56B0F5A16172}\1.0\
HELPDIR

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{2923508C-9425-4A61-B9CE-A98239055916}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{2923508C-9425-4A61-B9CE-A98239055916}\ProxyStubClsid

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{2923508C-9425-4A61-B9CE-A98239055916}\ProxyStubClsid32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{2923508C-9425-4A61-B9CE-A98239055916}\TypeLib

It adds the following registry entries:

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar
IEDefaultSearch = 1

HKEY_LOCAL_MACHINE\SOFTWARE\Baidu\
BaiduToolbar
idtmp = "haoaoao_cb"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
BaiduBarX
DisplayName = "?????"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
BaiduBarX
DisplayVersion = "2.0.19"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
BaiduBarX
Publisher = "??"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
BaiduBarX
HelpLink = "http://www.{BLOCKED}u.com/search/sobar.html"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
BaiduBarX
URLUpdateInfo = "http://toolbar.{BLOCKED}u.com"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
BaiduBarX
EstimatedSize = 1454

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
BaiduBarX
DisplayIcon = ""%Program Files%\Baidu\Toolbar\rc.dll",0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
BaiduBarX
UninstallString = ""%Program Files%\Baidu\Toolbar\BarBroker.exe" -runasAdmin -SVCUninstall"

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar\NoAD\Page_Allow
30 = "*.hao123.com*"

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar\NoAD\Page_Allow
31 = "*.baidu.com*"

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar\NoAD\Page_Allow
32 = "*.youa.com*"

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar\NoAD\Page_Allow
33 = "*.skycn.com*"

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar\NoAD\Page_Allow
34 = "*.skycn.net*"

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar\NoAD\Page_Allow
35 = "*.baifubao.com*"

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar\NoAD\Page_Block
0 = "*/ad.*"

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar\NoAD\Page_Block
1 = "http://ad[0-9].*"

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar\NoAD\Page_Block
2 = "http://{BLOCKED}s."

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar\NoAD\Page_Block
3 = "*banner.*"

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar\NoAD\Page_Block
4 = "*/advpic*"

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar\NoAD\Page_Block
5 = "*doubleclick.*"

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar\NoAD\Page_Block
6 = "*/ad/*"

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar\NoAD\Page_Block
7 = "*/banner_img/*"

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar\NoAD\Page_Block
8 = "*/adbanners*"

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar\NoAD\Page_Block
9 = "*cnsmin.3721.com/*"

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar\NoAD\Page_Block
10 = "*/adv/*"

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar\NoAD\Page_Block
11 = "*/images_ad/*"

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar\NoAD\Page_Block
12 = "*/ads/*"

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar\NoAD\Page_Block
13 = "*/advlink/*"

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar\NoAD\Page_Block
14 = "*/banner*"

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar\NoAD\Page_Block
15 = "http://ad.*"

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar\NoAD\Page_Block
16 = "*/adImages/*"

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar\NoAD\Page_Block
17 = "*.swf[a-z]*"

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar\NoAD\Page_Block
18 = "*images.sohu.com/cs/button/*"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\SearchScopes\{B8E20CD7-BAC2-4820-9AA6-1060B3AF25E2}
DisplayName = "????,????"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\SearchScopes\{B8E20CD7-BAC2-4820-9AA6-1060B3AF25E2}
URL = "http://www.{BLOCKED}u.com/s?wd={searchTerms}&ie={inputEncoding}&oe={outputEncoding}&bar=13&tn=haoaoao_cb"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\SearchScopes
DefaultScope = "{B8E20CD7-BAC2-4820-9AA6-1060B3AF25E2}"

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar
ForceShow = 1

HKEY_CURRENT_USER\Software\baidu\
BaiduToolbar
FirstRun = 1

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Toolbar
{B580CF65-E151-49C3-B73F-70B13FCA8E86} = "12"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{77FEF28E-EB96-44FF-B511-3185DEA48697}
NoExplorer = 1

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{77FEF28E-EB96-44FF-B511-3185DEA48697}
id = "bdbar"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{B580CF65-E151-49C3-B73F-70B13FCA8E86}\InprocServer32
ThreadingModel = "Apartment"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{A7F05EE4-0426-454F-8013-C41E3596E9E9}\InprocServer32
ThreadingModel = "Apartment"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{77FEF28E-EB96-44FF-B511-3185DEA48697}\InprocServer32
ThreadingModel = "both"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{E5D5D4A1-17F0-41D7-B1C6-0979F91E6F46}\InprocServer32
ThreadingModel = "Apartment"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{7EF05EFF-0E62-4040-8D81-73A10D8DE60F}\TypeLib
Version = "1.0"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{4C2BFEC9-F03C-4F74-932E-5723E603B4AC}\TypeLib
Version = "1.0"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{D158174C-004B-4A2E-9410-5442C10C60D2}\TypeLib
Version = "1.0"

HKEY_LOCAL_MACHINE\SOFTWARE\Baidu\
BaiduToolbar
ID = "haoaoao_cb"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
AppID\BarBroker.EXE
AppID = "{7A33CE9E-4F33-4B4E-B263-6AEEAB6C3DC2}"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{7A33CE9E-4F33-4B4E-B263-6AEEAB6C3DC2}
AppName = "BarBroker.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{7A33CE9E-4F33-4B4E-B263-6AEEAB6C3DC2}
AppPath = "%ProgramFiles%\Baidu\Toolbar"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{7A33CE9E-4F33-4B4E-B263-6AEEAB6C3DC2}
Policy = 3

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5BECD27B-DCF5-4DEF-B066-486A47245C03}
AppID = "{7A33CE9E-4F33-4B4E-B263-6AEEAB6C3DC2}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{2923508C-9425-4A61-B9CE-A98239055916}\TypeLib
Version = "1.0"

Dropping Routine

This Trojan drops the following files:

  • %User Temp%\nsx2.tmp\System.dll
  • %User Temp%\SOFT2009202.exe
  • %User Temp%\Toolbar.exe
  • %User Temp%\Setup.exe
  • %User Temp%\TheWorld_3.0.9.5.exe
  • %Program Files%\baidubar\taobao.ico
  • %Program Files%\baidubar\qidian.ico
  • %Desktop%\ÌÔ±¦Íø.lnk
  • %Desktop%\°²È«ä¯ÀÀÆ÷.lnk
  • %Desktop%\ÆðµãС˵.url
  • %User Temp%\nsx2.tmp\ShellLink.dll
  • %User Profile%\Quick Launch\Launch Internet Explorer Browser.lnk
  • %User Temp%\nsf4.tmp
  • %User Temp%\nsf5.tmp\InetLoad2.dll
  • %User Temp%\data.ini
  • %User Temp%\setup_133daohang2.exe
  • %User Temp%\nsg7.tmp
  • %Program Files%\Baidu\Toolbar\BaiduBarX_Tmp\BaiduBarX.dll
  • %Program Files%\Baidu\Toolbar\rc.dll
  • %Program Files%\Baidu\Toolbar\BarBroker.exe
  • %Start Menu%\Programs\?????\???????.lnk
  • %System%\f873348001.dll
  • %User Temp%\nsr9.tmp
  • %User Temp%\nsgA.tmp\default.bmp
  • %User Temp%\nsgA.tmp\second.bmp
  • %User Temp%\nsgA.tmp\Labelselect_chs.ini
  • %User Temp%\nsgA.tmp\ioSpecial.ini
  • %User Temp%\nsgA.tmp\modern-wizard.bmp
  • %Program Files%\Baidu\Toolbar\BaiduBarX.dll

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.. %Program Files% is the default Program Files folder, usually C:\Program Files.. %Desktop% is the current user's desktop, which is usually C:\Windows\Profiles\{user name}\Desktop on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Desktop on Windows NT, and C:\Documents and Settings\{User Name}\Desktop on Windows 2000, XP, and Server 2003.. %User Profile% is the current user's profile folder, which is usually C:\Windows\Profiles\{user name} on Windows 98 and ME, C:\WINNT\Profiles\{user name} on Windows NT, and C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003.. %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Profiles\{user name}\Start Menu on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu on Windows NT and C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000, XP, and Server 2003.. %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://mk.{BLOCKED}n.cn/online_inst/data.ini
  • http://mk.{BLOCKED}n.cn/133daohang2/setup_133daohang2.exe
  • http://hinb.{BLOCKED}s.com/pages/lcun709.txt
  • http://hine.{BLOCKED}s.com/pages/lcun709.txt

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine: 9.200

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

Close all opened browser windows

Step 3

Delete this registry key

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_CURRENT_USER\Software\baidu
    • BaiduToolbar
  • In HKEY_LOCAL_MACHINE\Software\Baidu
    • BaiduToolbar
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall
    • BaiduBarX
  • In HKEY_CURRENT_USER\software\baidu\BaiduToolbar
    • NoAD
  • In HKEY_CURRENT_USER\software\baidu\BaiduToolbar\NoAD
    • Page_Allow
  • In HKEY_CURRENT_USER\software\baidu\BaiduToolbar\NoAD
    • Page_Block
  • In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchScopes
    • {B8E20CD7-BAC2-4820-9AA6-1060B3AF25E2}
  • In HKEY_CLASSES_ROOT
    • BaiduBarX.ToolBand.1
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\BaiduBarX.ToolBand.1
    • CLSID
  • In HKEY_CLASSES_ROOT
    • BaiduBarX.ToolBand
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\BaiduBarX.ToolBand
    • CLSID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\BaiduBarX.ToolBand
    • CurVer
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
    • {B580CF65-E151-49C3-B73F-70B13FCA8E86}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{B580CF65-E151-49C3-B73F-70B13FCA8E86}
    • ProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{B580CF65-E151-49C3-B73F-70B13FCA8E86}
    • VersionIndependentProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{B580CF65-E151-49C3-B73F-70B13FCA8E86}
    • InprocServer32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{B580CF65-E151-49C3-B73F-70B13FCA8E86}
    • TypeLib
  • In HKEY_CLASSES_ROOT
    • BaiduBar.Tool.1
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\BaiduBar.Tool.1
    • CLSID
  • In HKEY_CLASSES_ROOT
    • BaiduBar.Tool
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\BaiduBar.Tool
    • CLSID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\BaiduBar.Tool
    • CurVer
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
    • {A7F05EE4-0426-454F-8013-C41E3596E9E9}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{A7F05EE4-0426-454F-8013-C41E3596E9E9}
    • ProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{A7F05EE4-0426-454F-8013-C41E3596E9E9}
    • VersionIndependentProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{A7F05EE4-0426-454F-8013-C41E3596E9E9}
    • Programmable
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{A7F05EE4-0426-454F-8013-C41E3596E9E9}
    • InprocServer32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{A7F05EE4-0426-454F-8013-C41E3596E9E9}
    • TypeLib
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion
    • Ext
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Ext
    • PreApproved
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Ext\PreApproved
    • {A7F05EE4-0426-454F-8013-C41E3596E9E9}
  • In HKEY_CLASSES_ROOT
    • BaiduBarX.BandIE.1
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\BaiduBarX.BandIE.1
    • CLSID
  • In HKEY_CLASSES_ROOT
    • BaiduBarX.BandIE
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\BaiduBarX.BandIE
    • CLSID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\BaiduBarX.BandIE
    • CurVer
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
    • {77FEF28E-EB96-44FF-B511-3185DEA48697}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{77FEF28E-EB96-44FF-B511-3185DEA48697}
    • ProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{77FEF28E-EB96-44FF-B511-3185DEA48697}
    • VersionIndependentProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{77FEF28E-EB96-44FF-B511-3185DEA48697}
    • InprocServer32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{77FEF28E-EB96-44FF-B511-3185DEA48697}
    • TypeLib
  • In HKEY_CLASSES_ROOT
    • BaiduBarEx.BDHomePage.4
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage.4
    • CLSID
  • In HKEY_CLASSES_ROOT
    • BaiduBarEx.BDHomePage.3
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage.3
    • CLSID
  • In HKEY_CLASSES_ROOT
    • BaiduBarEx.BDHomePage.2
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage.2
    • CLSID
  • In HKEY_CLASSES_ROOT
    • BaiduBarEx.BDHomePage.1
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage.1
    • CLSID
  • In HKEY_CLASSES_ROOT
    • BaiduBarEx.BDHomePage
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage
    • CLSID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage
    • CurVer
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
    • {E5D5D4A1-17F0-41D7-B1C6-0979F91E6F46}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{E5D5D4A1-17F0-41D7-B1C6-0979F91E6F46}
    • ProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{E5D5D4A1-17F0-41D7-B1C6-0979F91E6F46}
    • VersionIndependentProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{E5D5D4A1-17F0-41D7-B1C6-0979F91E6F46}
    • Programmable
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{E5D5D4A1-17F0-41D7-B1C6-0979F91E6F46}
    • InprocServer32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{E5D5D4A1-17F0-41D7-B1C6-0979F91E6F46}
    • TypeLib
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Ext\PreApproved
    • {E5D5D4A1-17F0-41D7-B1C6-0979F91E6F46}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib
    • {D12F94FA-FC9A-41F7-B808-7FBB419DD7A6}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{D12F94FA-FC9A-41F7-B808-7FBB419DD7A6}
    • 1.0
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{D12F94FA-FC9A-41F7-B808-7FBB419DD7A6}\1.0
    • FLAGS
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{D12F94FA-FC9A-41F7-B808-7FBB419DD7A6}\1.0
    • 0
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{D12F94FA-FC9A-41F7-B808-7FBB419DD7A6}\1.0\0
    • win32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{D12F94FA-FC9A-41F7-B808-7FBB419DD7A6}\1.0
    • HELPDIR
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
    • {7EF05EFF-0E62-4040-8D81-73A10D8DE60F}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{7EF05EFF-0E62-4040-8D81-73A10D8DE60F}
    • ProxyStubClsid
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{7EF05EFF-0E62-4040-8D81-73A10D8DE60F}
    • ProxyStubClsid32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{7EF05EFF-0E62-4040-8D81-73A10D8DE60F}
    • TypeLib
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
    • {4C2BFEC9-F03C-4F74-932E-5723E603B4AC}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{4C2BFEC9-F03C-4F74-932E-5723E603B4AC}
    • ProxyStubClsid
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{4C2BFEC9-F03C-4F74-932E-5723E603B4AC}
    • ProxyStubClsid32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{4C2BFEC9-F03C-4F74-932E-5723E603B4AC}
    • TypeLib
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
    • {D158174C-004B-4A2E-9410-5442C10C60D2}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{D158174C-004B-4A2E-9410-5442C10C60D2}
    • ProxyStubClsid
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{D158174C-004B-4A2E-9410-5442C10C60D2}
    • ProxyStubClsid32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{D158174C-004B-4A2E-9410-5442C10C60D2}
    • TypeLib
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\AppID
    • {7A33CE9E-4F33-4B4E-B263-6AEEAB6C3DC2}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\AppID
    • BarBroker.EXE
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer
    • Low Rights
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Low Rights
    • ElevationPolicy
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Low Rights\ElevationPolicy
    • {7A33CE9E-4F33-4B4E-B263-6AEEAB6C3DC2}
  • In HKEY_CLASSES_ROOT
    • BarBroker.BDBroker.1
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\BarBroker.BDBroker.1
    • CLSID
  • In HKEY_CLASSES_ROOT
    • BarBroker.BDBroker
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\BarBroker.BDBroker
    • CLSID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\BarBroker.BDBroker
    • CurVer
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
    • {5BECD27B-DCF5-4DEF-B066-486A47245C03}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5BECD27B-DCF5-4DEF-B066-486A47245C03}
    • ProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5BECD27B-DCF5-4DEF-B066-486A47245C03}
    • VersionIndependentProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5BECD27B-DCF5-4DEF-B066-486A47245C03}
    • LocalServer32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5BECD27B-DCF5-4DEF-B066-486A47245C03}
    • TypeLib
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib
    • {3A8C9D89-3271-45F4-98C0-56B0F5A16172}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{3A8C9D89-3271-45F4-98C0-56B0F5A16172}
    • 1.0
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{3A8C9D89-3271-45F4-98C0-56B0F5A16172}\1.0
    • FLAGS
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{3A8C9D89-3271-45F4-98C0-56B0F5A16172}\1.0
    • 0
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{3A8C9D89-3271-45F4-98C0-56B0F5A16172}\1.0\0
    • win32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{3A8C9D89-3271-45F4-98C0-56B0F5A16172}\1.0
    • HELPDIR
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
    • {2923508C-9425-4A61-B9CE-A98239055916}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{2923508C-9425-4A61-B9CE-A98239055916}
    • ProxyStubClsid
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{2923508C-9425-4A61-B9CE-A98239055916}
    • ProxyStubClsid32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{2923508C-9425-4A61-B9CE-A98239055916}
    • TypeLib

Step 4

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_CURRENT_USER\Software\baidu\BaiduToolbar
    • IEDefaultSearch=1
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Baidu\BaiduToolbar
    • idtmp="haoaoao_cb"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\BaiduBarX
    • DisplayName="?????"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\BaiduBarX
    • DisplayVersion="2.0.19"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\BaiduBarX
    • Publisher="??"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\BaiduBarX
    • HelpLink="http://www.{BLOCKED}u.com/search/sobar.html"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\BaiduBarX
    • URLUpdateInfo="http://toolbar.{BLOCKED}u.com"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\BaiduBarX
    • EstimatedSize=1454
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\BaiduBarX
    • DisplayIcon=""%Program Files%\Baidu\Toolbar\rc.dll",0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\BaiduBarX
    • UninstallString=""%Program Files%\Baidu\Toolbar\BarBroker.exe" -runasAdmin -SVCUninstall"
  • In HKEY_CURRENT_USER\Software\baidu\BaiduToolbar\NoAD\Page_Allow
    • 30="*.hao123.com*"
  • In HKEY_CURRENT_USER\Software\baidu\BaiduToolbar\NoAD\Page_Allow
    • 31="*.baidu.com*"
  • In HKEY_CURRENT_USER\Software\baidu\BaiduToolbar\NoAD\Page_Allow
    • 32="*.youa.com*"
  • In HKEY_CURRENT_USER\Software\baidu\BaiduToolbar\NoAD\Page_Allow
    • 33="*.skycn.com*"
  • In HKEY_CURRENT_USER\Software\baidu\BaiduToolbar\NoAD\Page_Allow
    • 34="*.skycn.net*"
  • In HKEY_CURRENT_USER\Software\baidu\BaiduToolbar\NoAD\Page_Allow
    • 35="*.baifubao.com*"
  • In HKEY_CURRENT_USER\Software\baidu\BaiduToolbar\NoAD\Page_Block
    • 0="*/ad.*"
  • In HKEY_CURRENT_USER\Software\baidu\BaiduToolbar\NoAD\Page_Block
    • 1="http://ad[0-9].*"
  • In HKEY_CURRENT_USER\Software\baidu\BaiduToolbar\NoAD\Page_Block
    • 2="http://{BLOCKED}s."
  • In HKEY_CURRENT_USER\Software\baidu\BaiduToolbar\NoAD\Page_Block
    • 3="*banner.*"
  • In HKEY_CURRENT_USER\Software\baidu\BaiduToolbar\NoAD\Page_Block
    • 4="*/advpic*"
  • In HKEY_CURRENT_USER\Software\baidu\BaiduToolbar\NoAD\Page_Block
    • 5="*doubleclick.*"
  • In HKEY_CURRENT_USER\Software\baidu\BaiduToolbar\NoAD\Page_Block
    • 6="*/ad/*"
  • In HKEY_CURRENT_USER\Software\baidu\BaiduToolbar\NoAD\Page_Block
    • 7="*/banner_img/*"
  • In HKEY_CURRENT_USER\Software\baidu\BaiduToolbar\NoAD\Page_Block
    • 8="*/adbanners*"
  • In HKEY_CURRENT_USER\Software\baidu\BaiduToolbar\NoAD\Page_Block
    • 9="*cnsmin.3721.com/*"
  • In HKEY_CURRENT_USER\Software\baidu\BaiduToolbar\NoAD\Page_Block
    • 10="*/adv/*"
  • In HKEY_CURRENT_USER\Software\baidu\BaiduToolbar\NoAD\Page_Block
    • 11="*/images_ad/*"
  • In HKEY_CURRENT_USER\Software\baidu\BaiduToolbar\NoAD\Page_Block
    • 12="*/ads/*"
  • In HKEY_CURRENT_USER\Software\baidu\BaiduToolbar\NoAD\Page_Block
    • 13="*/advlink/*"
  • In HKEY_CURRENT_USER\Software\baidu\BaiduToolbar\NoAD\Page_Block
    • 14="*/banner*"
  • In HKEY_CURRENT_USER\Software\baidu\BaiduToolbar\NoAD\Page_Block
    • 15="http://ad.*"
  • In HKEY_CURRENT_USER\Software\baidu\BaiduToolbar\NoAD\Page_Block
    • 16="*/adImages/*"
  • In HKEY_CURRENT_USER\Software\baidu\BaiduToolbar\NoAD\Page_Block
    • 17="*.swf[a-z]*"
  • In HKEY_CURRENT_USER\Software\baidu\BaiduToolbar\NoAD\Page_Block
    • 18="*images.sohu.com/cs/button/*"
  • In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchScopes\{B8E20CD7-BAC2-4820-9AA6-1060B3AF25E2}
    • DisplayName="????,????"
  • In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchScopes\{B8E20CD7-BAC2-4820-9AA6-1060B3AF25E2}
    • URL="http://www.{BLOCKED}u.com/s?wd={searchTerms}&ie={inputEncoding}&oe={outputEncoding}&bar=13&tn=haoaoao_cb"
  • In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchScopes
    • DefaultScope="{B8E20CD7-BAC2-4820-9AA6-1060B3AF25E2}"
  • In HKEY_CURRENT_USER\Software\baidu\BaiduToolbar
    • ForceShow=1
  • In HKEY_CURRENT_USER\Software\baidu\BaiduToolbar
    • FirstRun=1
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Toolbar
    • {B580CF65-E151-49C3-B73F-70B13FCA8E86}="12"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{77FEF28E-EB96-44FF-B511-3185DEA48697}
    • NoExplorer=1
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{77FEF28E-EB96-44FF-B511-3185DEA48697}
    • id="bdbar"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{B580CF65-E151-49C3-B73F-70B13FCA8E86}\InprocServer32
    • ThreadingModel="Apartment"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{A7F05EE4-0426-454F-8013-C41E3596E9E9}\InprocServer32
    • ThreadingModel="Apartment"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{77FEF28E-EB96-44FF-B511-3185DEA48697}\InprocServer32
    • ThreadingModel="both"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{E5D5D4A1-17F0-41D7-B1C6-0979F91E6F46}\InprocServer32
    • ThreadingModel="Apartment"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{7EF05EFF-0E62-4040-8D81-73A10D8DE60F}\TypeLib
    • Version="1.0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{4C2BFEC9-F03C-4F74-932E-5723E603B4AC}\TypeLib
    • Version="1.0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{D158174C-004B-4A2E-9410-5442C10C60D2}\TypeLib
    • Version="1.0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Baidu\BaiduToolbar
    • ID="haoaoao_cb"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\AppID\BarBroker.EXE
    • AppID="{7A33CE9E-4F33-4B4E-B263-6AEEAB6C3DC2}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\{7A33CE9E-4F33-4B4E-B263-6AEEAB6C3DC2}
    • AppName="BarBroker.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\{7A33CE9E-4F33-4B4E-B263-6AEEAB6C3DC2}
    • AppPath="%ProgramFiles%\Baidu\Toolbar"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\{7A33CE9E-4F33-4B4E-B263-6AEEAB6C3DC2}
    • Policy=3
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5BECD27B-DCF5-4DEF-B066-486A47245C03}
    • AppID="{7A33CE9E-4F33-4B4E-B263-6AEEAB6C3DC2}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{2923508C-9425-4A61-B9CE-A98239055916}\TypeLib
    • Version="1.0"

Step 5

Search and delete these folders

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.
  • %System Root%\DOCUME~1
  • %System Root%\DOCUME~1\ADMINI~1
  • %User Profile%\LOCALS~1
  • %User Temp%\nsx2.tmp
  • %Program Files%\baidubar
  • %System Root%\Documents and Settings
  • %System Root%\Documents and Settings\Administrator
  • %User Temp%\nsf5.tmp
  • %User Profile%\Application Data
  • %User Profile%\Application Data\Baidu
  • %User Profile%\Baidu\Toolbar
  • %User Profile%\Toolbar\Custom Buttons
  • %Program Files%\Baidu
  • %Program Files%\Baidu\Toolbar
  • %Program Files%\Baidu\Toolbar\BaiduBarX_Tmp
  • %Start Menu%\Programs\?????
  • %User Temp%\nsgA.tmp

Step 6

Search and delete these files

[ Learn More ]
There may be some component files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • %User Temp%\nsx2.tmp\System.dll
  • %User Temp%\SOFT2009202.exe
  • %User Temp%\Toolbar.exe
  • %User Temp%\Setup.exe
  • %User Temp%\TheWorld_3.0.9.5.exe
  • %Program Files%\baidubar\taobao.ico
  • %Program Files%\baidubar\qidian.ico
  • %Desktop%\ÌÔ±¦Íø.lnk
  • %Desktop%\°²È«ä¯ÀÀÆ÷.lnk
  • %Desktop%\ÆðµãС˵.url
  • %User Temp%\nsx2.tmp\ShellLink.dll
  • %User Profile%\Quick Launch\Launch Internet Explorer Browser.lnk
  • %User Temp%\nsf4.tmp
  • %User Temp%\nsf5.tmp\InetLoad2.dll
  • %User Temp%\data.ini
  • %User Temp%\setup_133daohang2.exe
  • %User Temp%\nsg7.tmp
  • %Program Files%\Baidu\Toolbar\BaiduBarX_Tmp\BaiduBarX.dll
  • %Program Files%\Baidu\Toolbar\rc.dll
  • %Program Files%\Baidu\Toolbar\BarBroker.exe
  • %Start Menu%\Programs\?????\???????.lnk
  • %System%\f873348001.dll
  • %User Temp%\nsr9.tmp
  • %User Temp%\nsgA.tmp\default.bmp
  • %User Temp%\nsgA.tmp\second.bmp
  • %User Temp%\nsgA.tmp\Labelselect_chs.ini
  • %User Temp%\nsgA.tmp\ioSpecial.ini
  • %User Temp%\nsgA.tmp\modern-wizard.bmp
  • %Program Files%\Baidu\Toolbar\BaiduBarX.dll

Step 7

Scan your computer with your Trend Micro product to delete files detected as VBS_DELF.PII. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.

Step 8

Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.

  • %User Temp%\nsh1.tmp
  • %User Temp%\nsx2.tmp
  • %User Temp%\nsq3.tmp
  • %User Temp%\nsf5.tmp
  • %User Temp%\nsg6.tmp
  • %System%\drivers\BDGuard.SYS
  • %System%\bdguard1.dat
  • %User Profile%\Toolbar\iexp_log.txt
  • %User Profile%\Toolbar\medialog.dat
  • %User Temp%\nsw8.tmp
  • %User Temp%\nsgA.tmp


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