PUA_BANGMAI

August 19, 2015

Modified by: RonJay Kristoffer Caragay

ALIASES:

Riskware/Bang5mai (Fortinet); TR/Bang5mai.3899600 (Avira); a variant of Win32/Bang5mai.C potentially unwanted (ESET-NOD32)

PLATFORM:

Windows

OVERALL RISK RATING:

DAMAGE POTENTIAL:

DISTRIBUTION POTENTIAL:

REPORTED INFECTION:

INFORMATION EXPOSURE:

Threat Type: Potentially Unwanted Application
Destructiveness: No
Encrypted: No
In the wild: Yes

OVERVIEW

Infection Channel: Downloaded from the Internet, Dropped by other malware

This potentially unwanted application arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites. It arrives as a component bundled with malware/grayware packages. It may be manually installed by a user.

It does not have any propagation routine.

It does not have any backdoor routine.

It connects to certain websites to send and receive information. It comes with an uninstall package that completely removes the files it dropped and the registries it created.

TECHNICAL DETAILS

File Size: 3,899,600 bytes

File Type: EXE

Memory Resident: Yes

Initial Samples Received Date: 15 Jul 2015

Payload: Connects to URLs/IPs

Arrival Details

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

It arrives as a component bundled with malware/grayware packages.

It may be manually installed by a user.

Installation

This potentially unwanted application adds the following folders:

%All Users Profile%\B5TTmp
%All Users Profile%\B5TTmp\6.0.4
%All Users Profile%\B5TTmp\6.0.4\Extensions
%All Users Profile%\B5TTmp\6.0.4\NaMsgHost
%All Users Profile%\B5TTmp\6.0.4\resource
%All Users Profile%\B5TTmp\resource
%AppDataLocal%\B5T
%AppDataLocal%\B5T\Plugin
%AppDataLocal%\B5T\Share
%AppDataLocalLow%\B5T
%User Temp%\{random}
%Start Menu%\Programs\帮5淘
{user-specified path}\B5T

(Note: %All Users Profile% is the All Users folder, where it usually is C:\Documents and Settings\All Users on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\ProgramData on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %AppDataLocal% is the Application Data folder found in Local Settings, where it is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %AppDataLocalLow% is the protected mode folder of Internet Explorer, where it usually is C:\Users\{user name}\AppData\LocalLow on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %Start Menu% is the Start Menu folder, where it usually is C:\Documents and Settings\{user name}\Start Menu on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

It drops the following files:

%All Users Profile%\B5TTmp\B5TInstall.exe
%All Users Profile%\B5TTmp\B5TMain.exe
%All Users Profile%\B5TTmp\chrm.exe
%All Users Profile%\B5TTmp\files.json
%All Users Profile%\B5TTmp\resource\b5t_setup_bg.png
%All Users Profile%\B5TTmp\resource\btn_installing.png
%All Users Profile%\B5TTmp\resource\btn_white.png
%All Users Profile%\B5TTmp\resource\check_box.bmp
%All Users Profile%\B5TTmp\resource\close.png
%All Users Profile%\B5TTmp\resource\DirectUI\scrollArrowDown.bmp
%All Users Profile%\B5TTmp\resource\DirectUI\scrollArrowUp.bmp
%All Users Profile%\B5TTmp\resource\DirectUI\scrollBar.bmp
%All Users Profile%\B5TTmp\resource\DirectUI\srollBk.bmp
%All Users Profile%\B5TTmp\resource\downArrow.png
%All Users Profile%\B5TTmp\resource\exitDlgBK.png
%All Users Profile%\B5TTmp\resource\orangeBK.png
%All Users Profile%\B5TTmp\resource\orangeButtonBK.png
%All Users Profile%\B5TTmp\resource\progressBk.bmp
%All Users Profile%\B5TTmp\resource\progressUnBk.bmp
%All Users Profile%\B5TTmp\resource\ReadMe.txt
%All Users Profile%\B5TTmp\resource\upArrow.png
%All Users Profile%\B5TTmp\resource\whiteBK.png
%All Users Profile%\B5TTmp\resource\wtl.exe.manifest
%AppDataLocal%\B5T\Plugin\B5TShoppingAssistant.dll
%AppDataLocal%\B5T\Plugin\B5TShoppingAssistant64.dll
%AppDataLocal%\B5T\Plugin\npB5TPlugin.dll
%AppDataLocal%\B5T\Plugin\npB5TPlugin64.dll
%AppDataLocal%\B5T\Plugin\sites.dat
%AppDataLocal%\B5T\Plugin\NaMsgHost\B5TAdaptorChrm.exe
%AppDataLocal%\B5T\Plugin\NaMsgHost\B5TAdaptorFx.dll
%AppDataLocal%\B5T\Plugin\NaMsgHost\com.b5t.chrome.namsg.b5t-win.json
%AppDataLocal%\B5T\Share\B5TService.exe
%User Temp%\{random}\B5TAssist.exe
%User Temp%\{random}\MainConfig.ini
%User Temp%\{random}\UninstMgr.exe
%User Temp%\B5TMini.exe
%AppDataLocalLow%\B5T\MainConfig.ini
%AppDataLocalLow%\B5T\ServerConfig.ini
%AppDataLocalLow%\B5T\UserConfig.ini
%Desktop%\帮5淘.lnk
%Start Menu%\Programs\帮5淘\卸载帮5淘.lnk
%Start Menu%\Programs\帮5淘\帮5买官方首页.lnk
%Start Menu%\Programs\帮5淘\帮5淘使用攻略.lnk
%Start Menu%\Programs\帮5淘\帮5淘桌面版.lnk

(Note: %All Users Profile% is the All Users folder, where it usually is C:\Documents and Settings\All Users on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\ProgramData on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %AppDataLocal% is the Application Data folder found in Local Settings, where it is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %AppDataLocalLow% is the protected mode folder of Internet Explorer, where it usually is C:\Users\{user name}\AppData\LocalLow on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %Desktop% is the desktop folder, where it usually is C:\Documents and Settings\{user name}\Desktop in Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\Desktop in Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %Start Menu% is the Start Menu folder, where it usually is C:\Documents and Settings\{user name}\Start Menu on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

Autostart Technique

This potentially unwanted application registers itself as a system service to ensure its automatic execution at every system startup by adding the following registry entries:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\B5TService
Type = "00000110"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\B5TService
Start = "2"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\B5TService
ImagePath = "{user-specified path}\B5T\Share\B5TService.exe"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\B5TService
DisplayName = "B5TService"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\B5TService
ObjectName = "LocalSystem"

It adds the following registry keys to install itself as a Browser Helper Object (BHO):

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{CLSID 1}

It adds the following registry entries to install itself as a Browser Helper Object (BHO):

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{CLSID 1}
(Default) = "°ï5ÌÔ-°ï5ÂòÆìÏÂ¹ºÎïÖúÊÖ-ä¯ÀÀÆ÷À©Õ¹"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{CLSID 1}
NoExplorer = "1"

It registers as a system service to ensure its automatic execution at every system startup by adding the following registry keys:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\B5TService

Other System Modifications

This potentially unwanted application adds the following registry entries:

HKEY_CURRENT_USER\Software\B5MSoft\
B5T
value{number} = "{random values}"

HKEY_CURRENT_USER\Software\B5MSoft\
B5T
Path = "{user-specified path}\B5T"

HKEY_CURRENT_USER\Software\B5MSoft\
B5T
ad = "{date}"

HKEY_LOCAL_MACHINE\SOFTWARE\B5TService
ALive = "{Date}"

HKEY_LOCAL_MACHINE\SOFTWARE\B5TService
Update = "{Date}"

HKEY_CURRENT_USER\Software\360\
360se6\Chrome\Extensions\
nklfajnmfbchcceflgddnkignfheooic
Path = "{user-specified path}\B5T\6.0.4\Extensions\B5TShoppingAssistant.crx"

HKEY_CURRENT_USER\Software\360\
360se6\Chrome\Extensions\
nklfajnmfbchcceflgddnkignfheooic
Version = "6.0.4"

HKEY_CURRENT_USER\Software\360Chrome\
Chrome\Extensions\nklfajnmfbchcceflgddnkignfheooic
Path = "{user-specified path}\B5T\6.0.4\Extensions\B5TShoppingAssistant.crx"

HKEY_CURRENT_USER\Software\360Chrome\
Chrome\Extensions\nklfajnmfbchcceflgddnkignfheooic
Version = "6.0.4"

HKEY_CURRENT_USER\Software\TheWorld Chrome\
Chrome\Extensions\nklfajnmfbchcceflgddnkignfheooic
Path = "{user-specified path}\B5T\6.0.4\Extensions\B5TShoppingAssistant.crx"

HKEY_CURRENT_USER\Software\TheWorld Chrome\
Chrome\Extensions\nklfajnmfbchcceflgddnkignfheooic
Version = "6.0.4"

HKEY_CURRENT_USER\Software\Google\
Chrome\Extensions\nklfajnmfbchcceflgddnkignfheooic
Path = "{user-specified path}\B5T\6.0.4\Extensions\B5TShoppingAssistantNativeMsg.crx"

HKEY_CURRENT_USER\Software\Google\
Chrome\Extensions\nklfajnmfbchcceflgddnkignfheooic
Version = "6.0.4"

HKEY_LOCAL_MACHINE\SOFTWARE\Google\
Chrome\NativeMessagingHosts\com.b5t.chrome.namsg.b5t
(Default) = "{user-specified path}\B5T\Plugin\NaMsgHost\com.b5t.chrome.namsg.b5t-win.json"

HKEY_CURRENT_USER\Software\MozillaPlugins\
B5MSoft.com/Bang5TaoPlugin
Path = "%AppDataLocal%\B5T\Plugin\npB5TPlugin.dll"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{GUID 1}
AppName = "B5TUpdate.exe"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{GUID 1}
AppPath = "{user-specified path}\B5T\6.0.4\"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{GUID 1}
Policy = "3"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{GUID 2}
AppName = "B5TClient.exe"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{GUID 2}
AppPath = "{user-specified path}\B5T\6.0.4\"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{GUID 2}
Policy = "3"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{GUID 3}
AppName = "B5TMain.exe"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{GUID 3}
AppPath = "{user-specified path}\B5T"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{GUID 3}
Policy = "3"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{GUID 4}
AppName = "B5TPopup.exe"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{GUID 4}
AppPath = "{user-specified path}\B5T\6.0.4\"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{GUID 4}
Policy = "3"

It adds the following registry entries as part of its installation routine:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
b5m_app_extension.ShopAssist
(Default) = "ShopAssist Class"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
b5m_app_extension.ShopAssist.1
(Default) = "ShopAssist Class"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
b5m_app_extension.ShopAssist.1\CLSID
(Default) = "{CLSID 1}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
b5m_app_extension.ShopAssist\CLSID
(Default) = "{CLSID 1}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
b5m_app_extension.ShopAssist\CurVer
(Default) = "b5m_app_extension.ShopAssist.1"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CLSID 1}
(Default) = "°ï5ÌÔ-°ï5ÂòÆìÏÂ¹ºÎïÖúÊÖ-ä¯ÀÀÆ÷À©Õ¹"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CLSID 1}\InprocServer32
(Default) = "%AppDataLocal%\B5T\Plugin\B5TShoppingAssistant.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CLSID 1}\InprocServer32
ThreadingModel = "Apartment"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CLSID 1}\ProgID
(Default) = "b5m_app_extension.ShopAssist.1"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CLSID 1}\TypeLib
(Default) = "{CLSID 3}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{CLSID 1}\VersionIndependentProgID
(Default) = "b5m_app_extension.ShopAssist"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
AppID\{GUID 6}
(Default) = "b5m_app_extension"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
AppID\b5m_app_extension.DLL
AppID = "{GUID 6}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{CLSID 3}\1.0
(Default) = "b5m_app_extension 1.0 {random characters}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{CLSID 3}\1.0\
0\win32
(Default) = "%AppDataLocal%\B5T\Plugin\B5TShoppingAssistant.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{CLSID 3}\1.0\
HELPDIR
(Default) = "%AppDataLocal%\B5T\Plugin"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{CLSID 4}
(Default) = "IShopAssist"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{CLSID 4}\TypeLib
(Default) = "{CLSID 3}"

HKEY_CURRENT_USER\Software\Classes\
MIME\Database\Content Type\
application/x-bang5taoplugin
CLSID = "{CLSID 2}"

HKEY_CURRENT_USER\Software\Classes\
MIME\Database\Content Type\
application/x-bang5taoplugin
(Default) = "Bang5Tao plugin"

HKEY_CURRENT_USER\Software\Classes\
MIME\Database\Content Type\
application/x-bang5taoplugin
Extension = ""

HKEY_CURRENT_USER\Software\Classes\
B5MSoft.Bang5TaoPlugin
(Default) = "Bang5Tao plugin"

HKEY_CURRENT_USER\Software\Classes\
B5MSoft.Bang5TaoPlugin.1
(Default) = "Bang5Tao plugin"

HKEY_CURRENT_USER\Software\Classes\
B5MSoft.Bang5TaoPlugin.1\CLSID
(Default) = "{CLSID 2}"

HKEY_CURRENT_USER\Software\Classes\
B5MSoft.Bang5TaoPlugin\CLSID
(Default) = "{CLSID 2}"

HKEY_CURRENT_USER\Software\Classes\
B5MSoft.Bang5TaoPlugin\CurVer
(Default) = "B5MSoft.Bang5TaoPlugin.1"

HKEY_CURRENT_USER\Software\Classes\
CLSID\{CLSID 2}
AppID = "{GUID 5}"

HKEY_CURRENT_USER\Software\Classes\
CLSID\{CLSID 2}
(Default) = "Bang5Tao plugin"

HKEY_CURRENT_USER\Software\Classes\
CLSID\{CLSID 2}\InprocServer32
(Default) = "%AppDataLocal%\B5T\Plugin\npB5TPlugin.dll"

HKEY_CURRENT_USER\Software\Classes\
CLSID\{CLSID 2}\ProgID
(Default) = "B5MSoft.Bang5TaoPlugin.1"

HKEY_CURRENT_USER\Software\Classes\
CLSID\{CLSID 2}\TypeLib
(Default) = "{CLSID 5}"

HKEY_CURRENT_USER\Software\Classes\
CLSID\{CLSID 2}\Version
(Default) = "1"

HKEY_CURRENT_USER\Software\Classes\
CLSID\{CLSID 2}\VersionIndependentProgID
(Default) = "B5MSoft.Bang5TaoPlugin"

HKEY_CURRENT_USER\Software\Classes\
AppID\{GUID 5}
(Default) = "FireBreathWin"

HKEY_CURRENT_USER\Software\Classes\
AppID\npB5TPlugin64.dll
AppID = "{GUID 5}"

HKEY_CURRENT_USER\Software\Classes\
TypeLib\{CLSID 5}\1.0
(Default) = "Bang5TaoPlugin 1.0 Type Library"

HKEY_CURRENT_USER\Software\Classes\
TypeLib\{CLSID 5}\1.0\
0\win32
(Default) = "%AppDataLocal%\B5T\Plugin\npB5TPlugin.dll"

HKEY_CURRENT_USER\Software\Classes\
TypeLib\{CLSID 5}\1.0\
HELPDIR
(Default) = "%AppDataLocal%\B5T\Plugin"

HKEY_CURRENT_USER\Software\Classes\
Interface\{CLSID 6}
(Default) = "IFBComJavascriptObject"

HKEY_CURRENT_USER\Software\Classes\
Interface\{CLSID 6}\TypeLib
(Default) = "{CLSID 5}"

HKEY_CURRENT_USER\Software\Classes\
Interface\{CLSID 7}
(Default) = "IFBComEventSource"

HKEY_CURRENT_USER\Software\Classes\
Interface\{CLSID 7}\TypeLib
(Default) = "{CLSID 5}"

HKEY_CURRENT_USER\Software\Classes\
Interface\{CLSID 8}
(Default) = "IFBControl"

HKEY_CURRENT_USER\Software\Classes\
Interface\{CLSID 8}\TypeLib
(Default) = "{CLSID 5}"

Propagation

This potentially unwanted application does not have any propagation routine.

Backdoor Routine

This potentially unwanted application does not have any backdoor routine.

Dropping Routine

This potentially unwanted application drops the following files:

Note: These files are moved to a {user-specified path}\B5T directory after installation.
%AppDataLocal%\B5T\Plugin\B5TShoppingAssistant.dll
%AppDataLocal%\B5T\Plugin\B5TShoppingAssistant64.dll
%AppDataLocal%\B5T\Plugin\npB5TPlugin.dll
%AppDataLocal%\B5T\Plugin\npB5TPlugin64.dll
%AppDataLocal%\B5T\Plugin\sites.dat
%AppDataLocal%\B5T\Plugin\NaMsgHost\B5TAdaptorChrm.exe
%AppDataLocal%\B5T\Plugin\NaMsgHost\B5TAdaptorFx.dll
%AppDataLocal%\B5T\Plugin\NaMsgHost\com.b5t.chrome.namsg.b5t-win.json
%AppDataLocal%\B5T\Share\B5TService.exe
%All Users Profile%\B5TTmp\6.0.4\B5TAssist.exe
%All Users Profile%\B5TTmp\6.0.4\B5TChecker.exe
%All Users Profile%\B5TTmp\6.0.4\B5TClient.exe
%All Users Profile%\B5TTmp\6.0.4\b5tconfig.xml
%All Users Profile%\B5TTmp\6.0.4\B5TPopup.exe
%All Users Profile%\B5TTmp\6.0.4\B5TService.exe
%All Users Profile%\B5TTmp\6.0.4\B5TShoppingAssistant.dll
%All Users Profile%\B5TTmp\6.0.4\B5TShoppingAssistant64.dll
%All Users Profile%\B5TTmp\6.0.4\B5TStart.exe
%All Users Profile%\B5TTmp\6.0.4\B5TUninstall.exe
%All Users Profile%\B5TTmp\6.0.4\B5TUpdate.exe
%All Users Profile%\B5TTmp\6.0.4\BugReport.exe
%All Users Profile%\B5TTmp\6.0.4\chrm.exe
%All Users Profile%\B5TTmp\6.0.4\Extensions\B5TShoppingAssistant.crx
%All Users Profile%\B5TTmp\6.0.4\Extensions\B5TShoppingAssistant.mxaddon
%All Users Profile%\B5TTmp\6.0.4\Extensions\B5TShoppingAssistant.sext
%All Users Profile%\B5TTmp\6.0.4\Extensions\B5TShoppingAssistant.xpi
%All Users Profile%\B5TTmp\6.0.4\Extensions\B5TShoppingAssistantNativeMsg.crx
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\css\images\b5m-plugin-ng.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\css\images\b5m-plugin-ng-8bit.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\css\images\bg.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\css\images\bg-8bit.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\css\images\btn-b5t.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\css\images\btn-b5t-focused.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\css\images\btn-kuaidi.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\css\images\btn-kuaidi-focused.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\css\images\co-logo.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\css\popup.css
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\icons\icon_128.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\icons\icon_16.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\icons\icon_19.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\icons\icon_24.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\icons\icon_32.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\icons\icon_48.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\icons\icon_64.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\images\b5m-icons.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\images\co-logo.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\images\logo.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\images\mlogo.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\images\qukankan.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\images\selected.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\images\shezhi.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\images\top-bg.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\images\unselected.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\js\jquery-1.7.1.min.js
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\js\tinyScrollbar.js
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\background.html
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\background.js
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\contentscript.js
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\manifest.json
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\notification.js
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\options.css
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\options.html
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\options.js
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\views\popup.html
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\views\popup.js
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\_locales\en\messages.json
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\_locales\zh_CN\messages.json
%All Users Profile%\B5TTmp\6.0.4\Extensions\Chrome\setting_chrome.json
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\css\images\b5m-plugin-ng.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\css\images\b5m-plugin-ng-8bit.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\css\images\bg.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\css\images\bg-8bit.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\css\images\btn-b5t.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\css\images\btn-b5t-focused.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\css\images\btn-kuaidi.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\css\images\btn-kuaidi-focused.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\css\images\co-logo.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\css\popup.css
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\icons\icon_128.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\icons\icon_16.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\icons\icon_19.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\icons\icon_24.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\icons\icon_32.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\icons\icon_48.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\icons\icon_64.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\images\b5m-icons.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\images\co-logo.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\images\logo.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\images\mlogo.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\images\qukankan.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\images\selected.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\images\shezhi.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\images\top-bg.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\images\unselected.png
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\js\jquery-1.7.1.min.js
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\assets\js\tinyScrollbar.js
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\background.html
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\background.js
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\contentscript.js
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\manifest.json
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\notification.js
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\options.css
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\options.html
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\options.js
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\views\popup.html
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\views\popup.js
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\_locales\en\messages.json
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\nklfajnmfbchcceflgddnkignfheooic\6.0.4_0\_locales\zh_CN\messages.json
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\setting.json
%All Users Profile%\B5TTmp\6.0.4\Extensions\ChromeCore\setting_360.json
%All Users Profile%\B5TTmp\6.0.4\Extensions\Firefox.json
%All Users Profile%\B5TTmp\6.0.4\logo.ico
%All Users Profile%\B5TTmp\6.0.4\merchantPic.xml
%All Users Profile%\B5TTmp\6.0.4\NaMsgHost\B5TAdaptorChrm.exe
%All Users Profile%\B5TTmp\6.0.4\NaMsgHost\B5TAdaptorFx.dll
%All Users Profile%\B5TTmp\6.0.4\NaMsgHost\com.b5t.chrome.namsg.b5t-win.json
%All Users Profile%\B5TTmp\6.0.4\npB5TPlugin.dll
%All Users Profile%\B5TTmp\6.0.4\npB5TPlugin64.dll
%All Users Profile%\B5TTmp\6.0.4\resconfig.dll
%All Users Profile%\B5TTmp\6.0.4\resource\aboutBG.png
%All Users Profile%\B5TTmp\6.0.4\resource\AppClose.png
%All Users Profile%\B5TTmp\6.0.4\resource\Applogo.png
%All Users Profile%\B5TTmp\6.0.4\resource\AppMini.png
%All Users Profile%\B5TTmp\6.0.4\resource\AppSet.png
%All Users Profile%\B5TTmp\6.0.4\resource\bg.png
%All Users Profile%\B5TTmp\6.0.4\resource\bg_setting.png
%All Users Profile%\B5TTmp\6.0.4\resource\bg_unbk.png
%All Users Profile%\B5TTmp\6.0.4\resource\bubble\bubble_bk1.png
%All Users Profile%\B5TTmp\6.0.4\resource\bubble\bubble_bk2.png
%All Users Profile%\B5TTmp\6.0.4\resource\bubble\bubble_close.png
%All Users Profile%\B5TTmp\6.0.4\resource\check_box.bmp
%All Users Profile%\B5TTmp\6.0.4\resource\check_box3.bmp
%All Users Profile%\B5TTmp\6.0.4\resource\checkstop.png
%All Users Profile%\B5TTmp\6.0.4\resource\choose.png
%All Users Profile%\B5TTmp\6.0.4\resource\close.png
%All Users Profile%\B5TTmp\6.0.4\resource\Demo1.png
%All Users Profile%\B5TTmp\6.0.4\resource\Demo2.png
%All Users Profile%\B5TTmp\6.0.4\resource\Demo3.png
%All Users Profile%\B5TTmp\6.0.4\resource\editBK.bmp
%All Users Profile%\B5TTmp\6.0.4\resource\exitDlgBK.png
%All Users Profile%\B5TTmp\6.0.4\resource\find_update.png
%All Users Profile%\B5TTmp\6.0.4\resource\jspopclose.png
%All Users Profile%\B5TTmp\6.0.4\resource\min.png
%All Users Profile%\B5TTmp\6.0.4\resource\mini\skin1\bg.png
%All Users Profile%\B5TTmp\6.0.4\resource\mini\skin1\chkbox.png
%All Users Profile%\B5TTmp\6.0.4\resource\mini\skin1\close.png
%All Users Profile%\B5TTmp\6.0.4\resource\mini\skin1\min.png
%All Users Profile%\B5TTmp\6.0.4\resource\mini\skin1\setting.json
%All Users Profile%\B5TTmp\6.0.4\resource\orangeBK.png
%All Users Profile%\B5TTmp\6.0.4\resource\orangeButtonBK.png
%All Users Profile%\B5TTmp\6.0.4\resource\phone.png
%All Users Profile%\B5TTmp\6.0.4\resource\progressBk.bmp
%All Users Profile%\B5TTmp\6.0.4\resource\progressUnBk.bmp
%All Users Profile%\B5TTmp\6.0.4\resource\ReadMe.txt
%All Users Profile%\B5TTmp\6.0.4\resource\remindBk.png
%All Users Profile%\B5TTmp\6.0.4\resource\remindBkBig.png
%All Users Profile%\B5TTmp\6.0.4\resource\remindClose.png
%All Users Profile%\B5TTmp\6.0.4\resource\remindDetail.png
%All Users Profile%\B5TTmp\6.0.4\resource\remindlogo.png
%All Users Profile%\B5TTmp\6.0.4\resource\remindQue.png
%All Users Profile%\B5TTmp\6.0.4\resource\search.jpg
%All Users Profile%\B5TTmp\6.0.4\resource\searchEditBK.bmp
%All Users Profile%\B5TTmp\6.0.4\resource\searchIcon.jpg
%All Users Profile%\B5TTmp\6.0.4\resource\share.png
%All Users Profile%\B5TTmp\6.0.4\resource\tabBK.bmp
%All Users Profile%\B5TTmp\6.0.4\resource\trayAbout .png
%All Users Profile%\B5TTmp\6.0.4\resource\trayExit.png
%All Users Profile%\B5TTmp\6.0.4\resource\trayMin.png
%All Users Profile%\B5TTmp\6.0.4\resource\traySetting.png
%All Users Profile%\B5TTmp\6.0.4\resource\trayShowWindow.png
%All Users Profile%\B5TTmp\6.0.4\resource\update_text_bk.jpg
%All Users Profile%\B5TTmp\6.0.4\resource\whiteBK.png
%All Users Profile%\B5TTmp\6.0.4\resource\wtl.exe.manifest
%All Users Profile%\B5TTmp\6.0.4\sites.dat
%All Users Profile%\B5TTmp\6.0.4\UninstMgr.exe
%All Users Profile%\B5TTmp\6.0.4\帮5买官方首页.url
%All Users Profile%\B5TTmp\6.0.4\帮5淘使用攻略.url
%All Users Profile%\B5TTmp\B5TMain.exe

(Note: %AppDataLocal% is the Application Data folder found in Local Settings, where it is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %All Users Profile% is the All Users folder, where it usually is C:\Documents and Settings\All Users on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\ProgramData on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

Other Details

This potentially unwanted application adds the following registry entries to add an uninstall option to the Control Panel:

HKEY_CURRENT_ USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
帮5淘
DisplayVersion = "6.0.4"

HKEY_CURRENT_ USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
帮5淘
URLInfoAbout = "www.b5m.com"

HKEY_CURRENT_ USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
帮5淘
Publisher = "载信软件（上海）有限公司"

HKEY_CURRENT_ USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
帮5淘
DisplayName = "帮5淘"

HKEY_CURRENT_ USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
帮5淘
UninstallString = "{user-specified path}\B5T\6.0.4\B5TUninstall.exe"

HKEY_CURRENT_ USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
帮5淘
DisplayIcon = "{user-specified path}\B5T\6.0.4\logo.ico"

It connects to the following website to send and receive information:

http://{BLOCKED}gin.{BLOCKED}m.com/assets/main/js/b5m.vipAd.js?
http://cdn.{BLOCKED}m.com/upload/plugin/ad/weibo.png
http://cdn.{BLOCKED}ai.com/upload/plugin/update/huodong/act_merch/pc.html?
http://p.{BLOCKED}m.com/extension.do?method=js
http://{BLOCKED}n.{BLOCKED}ai.com/
http://www.{BLOCKED}m.com/?
http://t.{BLOCKED}m.com/

It comes with an uninstall package that completely removes the files it dropped and the registries it added.

NOTES:

This grayware is part of the Bang5main software, which is a shopping online helper or application.

It drops the following files to install itself as a browser extension:

%Application Data%\{Mozilla Firefox path}\b5t.modules@b5t\B5TAdaptorFx.dll
%Application Data%\{Mozilla Firefox path}\extensions\staged\extension@b5m.com.json
%Application Data%\{Mozilla Firefox path}\extensions\staged\extension@b5m.com.xpi

Files located in the directory %AppDataLocal%\B5T\6.0.4\Extensions\Chrome are copied to the Google Chrome Extensions directory.

It displays the following GUI upon installation:

It can manually change the installation folder for this grayware:

It does not have rootkit capabilities.

It does not exploit any vulnerability.

SOLUTION

Minimum Scan Engine: 9.750

SSAPI PATTERN File: 1.643.00

SSAPI PATTERN Date: 23 Jul 2015

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

Remove PUA_BANGMAI by using its own Uninstall option

[ Learn More ]

To uninstall the grayware processDATA_GENERIC

Click on Remove or Uninstall depending on the currently running Windows version.

Follow the instructions on the dialog box that appears.

Close the Programs window, and the Control Panel window.

Step 5

Scan your computer with your Trend Micro product to delete files detected as PUA_BANGMAI. 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 6

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. Before you could do this, you must restart in Safe Mode. For instructions on how to do this, you may refer to this page If the preceding step requires you to restart in safe mode, you may proceed to edit the system registry.

In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
- B5TService
In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects
- {CLSID 1}
In HKEY_CURRENT_USER\Software
- B5MSoft
In HKEY_LOCAL_MACHINE\SOFTWARE
- B5TService
In HKEY_CURRENT_USER\Software
- 360
In HKEY_CURRENT_USER\Software
- 360Chrome
In HKEY_CURRENT_USER\Software
- TheWorld Chrome
In HKEY_CURRENT_USER\Software\Google\Chrome\Extensions
- nklfajnmfbchcceflgddnkignfheooic
In HKEY_LOCAL_MACHINE\SOFTWARE\Google\Chrome\NativeMessagingHosts
- com.b5t.chrome.namsg.b5t
In HKEY_CURRENT_USER\Software\MozillaPlugins
- B5MSoft.com
In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Low Rights
- ElevationPolicy
In HKEY_LOCAL_MACHINE\SOFTWARE\Classes
- b5m_app_extension.ShopAssist
In HKEY_LOCAL_MACHINE\SOFTWARE\Classes
- b5m_app_extension.ShopAssist.1
In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
- {CLSID 1}
In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\AppID
- b5m_app_extension.DLL
In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\AppID
- {GUID 6}
In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib
- {CLSID 3}
In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
- {CLSID 4}
In HKEY_CURRENT_USER\Software\Classes\MIME\Database\Content Type
- application/x-bang5taoplugin
In HKEY_CURRENT_USER\Software\Classes
- B5MSoft.Bang5TaoPlugin
In HKEY_CURRENT_USER\Software\Classes
- B5MSoft.Bang5TaoPlugin.1
In HKEY_CURRENT_USER\Software\Classes\CLSID
- {CLSID 2}
In HKEY_CURRENT_USER\Software\Classes\AppID
- {GUID 5}
In HKEY_CURRENT_USER\Software\Classes\AppID
- npB5TPlugin64.d
In HKEY_CURRENT_USER\Software\Classes\TypeLib
- {CLSID 5}
In HKEY_CURRENT_USER\Software\Classes\Interface
- {CLSID 6}
In HKEY_CURRENT_USER\Software\Classes\Interface
- {CLSID 7}
In HKEY_CURRENT_USER\Software\Classes\Interface
- {CLSID 8}

To delete the registry key this malware/grayware/spyware created:

Restart your computer in Safe Mode. For instructions on how to do this, you may refer to this page. If the preceding step requires you to restart in safe mode, you may proceed to #2.
Open Registry Editor. To do this:
» For Windows 2000, Windows XP, and Windows Server 2003 users, click Start>Run, type regedit in the text box provided, and then press Enter.
» For Windows Vista, Windows 7, and Windows Server 2008 users, click the Start button, type regedit in the Search input field then press Enter.
» For Windows 8, Windows 8.1, and Windows Server 2012 users, right-click on the lower left corner of the screen, click Run, type regedit in the text box provided, and then press Enter.
In the left panel of the Registry Editor window, double-click the following:
HKEY_LOCAL_MACHINE>SYSTEM>CurrentControlSet>Services
Still in the left panel, locate and delete the key:
B5TService
In the left panel of the Registry Editor window, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows>CurrentVersion>Explorer>Browser Helper Objects
Still in the left panel, locate and delete the key:
{CLSID 1}
In the left panel of the Registry Editor window, double-click the following:
HKEY_CURRENT_USER>Software
Still in the left panel, locate and delete the key:
B5MSoft
In the left panel of the Registry Editor window, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE
Still in the left panel, locate and delete the key:
B5TService
Again Still in the left panel, locate and delete the key:
360
Again Still in the left panel, locate and delete the key:
360Chrome
Again Still in the left panel, locate and delete the key:
TheWorld Chrome
In the left panel of the Registry Editor window, double-click the following:
HKEY_CURRENT_USER>Software>Google>Chrome>Extensions
Still in the left panel, locate and delete the key:
nklfajnmfbchcceflgddnkignfheooic
In the left panel of the Registry Editor window, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Google>Chrome>NativeMessagingHosts
Still in the left panel, locate and delete the key:
com.b5t.chrome.namsg.b5t
In the left panel of the Registry Editor window, double-click the following:
HKEY_CURRENT_USER>Software>MozillaPlugins
Still in the left panel, locate and delete the key:
B5MSoft.com
In the left panel of the Registry Editor window, double-click the following:
HKEY_CURRENT_USER>Software>Microsoft>Internet Explorer>Low Rights
Still in the left panel, locate and delete the key:
ElevationPolicy
In the left panel of the Registry Editor window, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes
Still in the left panel, locate and delete the key:
b5m_app_extension.ShopAssist
Again Still in the left panel, locate and delete the key:
b5m_app_extension.ShopAssist.1
In the left panel of the Registry Editor window, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>CLSID
Still in the left panel, locate and delete the key:
{CLSID 1}
In the left panel of the Registry Editor window, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>AppID
Still in the left panel, locate and delete the key:
b5m_app_extension.DLL
Again Still in the left panel, locate and delete the key:
{GUID 6}
In the left panel of the Registry Editor window, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>TypeLib
Still in the left panel, locate and delete the key:
{CLSID 3}
In the left panel of the Registry Editor window, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Interface
Still in the left panel, locate and delete the key:
{CLSID 4}
In the left panel of the Registry Editor window, double-click the following:
HKEY_CURRENT_USER>Software>Classes>MIME>Database>Content Type
Still in the left panel, locate and delete the key:
application/x-bang5taoplugin
In the left panel of the Registry Editor window, double-click the following:
HKEY_CURRENT_USER>Software>Classes
Still in the left panel, locate and delete the key:
B5MSoft.Bang5TaoPlugin
Again Still in the left panel, locate and delete the key:
B5MSoft.Bang5TaoPlugin.1
In the left panel of the Registry Editor window, double-click the following:
HKEY_CURRENT_USER>Software>Classes>CLSID
Still in the left panel, locate and delete the key:
{CLSID 2}
In the left panel of the Registry Editor window, double-click the following:
HKEY_CURRENT_USER>Software>Classes>AppID
Still in the left panel, locate and delete the key:
{GUID 5}
Again Still in the left panel, locate and delete the key:
npB5TPlugin64.d
In the left panel of the Registry Editor window, double-click the following:
HKEY_CURRENT_USER>Software>Classes>TypeLib
Still in the left panel, locate and delete the key:
{CLSID 5}
In the left panel of the Registry Editor window, double-click the following:
HKEY_CURRENT_USER>Software>Classes>Interface
Still in the left panel, locate and delete the key:
{CLSID 6}
Again Still in the left panel, locate and delete the key:
{CLSID 7}
Again Still in the left panel, locate and delete the key:
{CLSID 8}
Close Registry Editor.

Step 7

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.

%All Users Profile%\B5TTmp
%AppDataLocal%\B5T
{user-specified path}\B5T
%User Temp%\{random}
%AppDataLocalLow%\B5T
%Start Menu%\Programs\帮5淘

Step 8

Search and delete this file

[ Learn More ]

There may be some 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%\B5TMini.exe
%Desktop%\帮5淘.lnk
%Start Menu%\Programs\帮5淘\卸载帮5淘.lnk
%Start Menu%\Programs\帮5淘\帮5买官方首页.lnk
%Start Menu%\Programs\帮5淘\帮5淘使用攻略.lnk
%Start Menu%\Programs\帮5淘\帮5淘桌面版.lnk

Step 9

Restart in normal mode and scan your computer with your Trend Micro product for files detected as PUA_BANGMAI. 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.

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