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PUA_BAIDURJDOWNLOADER.GA

April 30, 2018
 Analysis by: John Anthony Banes
 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 may be manually installed by a user.

It connects to a website to send and receive information.

  TECHNICAL DETAILS

File Size:

3,224,928 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

26 Apr 2018

Payload:

Drops files, 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 may be manually installed by a user.

Installation

This Potentially Unwanted Application adds the following folders:

  • %Program Files%\baidu\BaiduRJDownloader
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\drivers
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\Microsoft.VC80.ATL
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\Microsoft.VC80.CRT
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\skin
  • %Program Files%\baidu\rj
  • %ProgramData%\Baidu
  • %ProgramData%\Baidu\Common
  • %User Temp%\nso{random}.tmp
  • %Program Files%\baidu

(Note: %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.. %ProgramData% is the Program Data folder, where it usually is C:\Program Files in Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\ProgramData 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.. %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.)

It drops the following files:

  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\ActivityAssistant.exe
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\AppAdTip.exe
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\AppOpenAsTip.exe
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\AppUpdater.exe
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\AppUpdateTips.exe
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\BaseDll.dll
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\bddlsvc.exe
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\BDHYServer.exe
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\BDKitUtils.dll
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\BDMNetGetInfo.dll
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\bdrcdl.exe
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\BugReport.exe
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\config.xml
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\dl.dll
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\DriverManager.dll
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\drivers\BDArKit.sys
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_10272.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_10547.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_10644.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_10849.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_11043.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_11339.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_11383.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_11390.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_11838.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_11843.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_12035.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_12276.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_12282.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_12350.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_12616.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_12812.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_12856.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_12882.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_12934.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_12993.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_13406.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_13442.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_13478.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_13598.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_13874.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_14000.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_14497.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_14744.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_14754.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_15192.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_15501.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_15752.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_16490.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_16988.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_17183.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_17519.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_17588.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_19130.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_19227.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_19412.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_20621.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_21211.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_23980.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_24655.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_28108.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_28111.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_35858.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_38200.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_40694.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_40805.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_40898.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_41065.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_41100.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_41143.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\HYSoftIcons\10002_41153.png
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\ieBDSoftHelperPlug.dll
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\Microsoft.VC80.ATL\atl80.dll
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\Microsoft.VC80.ATL\Microsoft.VC80.ATL.manifest
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\Microsoft.VC80.CRT\Microsoft.VC80.CRT.manifest
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\Microsoft.VC80.CRT\msvcm80.dll
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\Microsoft.VC80.CRT\msvcp80.dll
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\Microsoft.VC80.CRT\msvcr80.dll
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\mindownload.ico
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\ProtocolDll.dll
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\ReportDll.dll
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\ReportRecordDll.dll
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\skin\adtipsui.rdb
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\skin\color_adtips.clr
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\skin\color_desc.clr
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\skin\color_openastips.clr
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\skin\color_tips.clr
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\skin\color_uninst.clr
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\skin\color_updatetips.clr
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\skin\font_adtips.f
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\skin\font_desc.f
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\skin\font_openastips.f
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\skin\font_tips.f
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\skin\font_uninst.f
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\skin\font_updatetips.f
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\skin\haiyanui.rdb
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\skin\openastipsui.rdb
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\skin\text_adtips.str
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\skin\text_cn.str
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\skin\text_openastips.str
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\skin\text_tips.str
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\skin\text_uninst.str
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\skin\text_updatetips.str
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\skin\tipsui.rdb
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\skin\uninstui.rdb
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\skin\updatetipsui.rdb
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\skin_engine.dll
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\uninstaller.exe
  • %Program Files%\baidu\BaiduRJDownloader\2.0.0.290\UtilsDll.dll
  • %Program Files%\baidu\rj\favicon.ico
  • %ProgramData%\Baidu\Common\Global.db
  • %System%\drivers\BDArKit.sys
  • %User Temp%\nso{random}.tmp\InstallHelper.dll

(Note: %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.. %ProgramData% is the Program Data folder, where it usually is C:\Program Files in Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\ProgramData 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.. %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.. %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.)

Autostart Technique

This Potentially Unwanted Application starts the following services:

  • Service Name: bddlsvc
    Display Name: BDHY Service
    Description: 百度下载助手服务，提供更加贴心的软件下载服务
    Path to Executable: "%Program Files%\baidu\BaiduRJDownloader\2.0.0.290\bddlsvc.exe -r"
    Startup Type: Automatic

(Note: %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.)

Other System Modifications

This Potentially Unwanted Application adds the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\baidu

HKEY_LOCAL_MACHINE\SOFTWARE\baidu\
BaiduRJDownloader

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
*\shell\dlhelper

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
*\shell\dlhelper\
command

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
AppID\{0031830A-A9D3-4f64-B6E8-3D55B68F4F9B}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
AppID\ieCommonPlugin.DLL

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{D3C9CF85-72D2-4d22-B16A-0B682403AB84}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{D3C9CF85-72D2-4d22-B16A-0B682403AB84}\InprocServer32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{D3C9CF85-72D2-4d22-B16A-0B682403AB84}\ProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{D3C9CF85-72D2-4d22-B16A-0B682403AB84}\Programmable

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{D3C9CF85-72D2-4d22-B16A-0B682403AB84}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{D3C9CF85-72D2-4d22-B16A-0B682403AB84}\VersionIndependentProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
ieBDSoftHelperPlug.Implement

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
ieBDSoftHelperPlug.Implement.1

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
ieBDSoftHelperPlug.Implement.1\CLSID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
ieBDSoftHelperPlug.Implement\CLSID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
ieBDSoftHelperPlug.Implement\CurVer

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{06AD210F-5953-4201-BB4F-81756DB68DF0}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{06AD210F-5953-4201-BB4F-81756DB68DF0}\ProxyStubClsid

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{06AD210F-5953-4201-BB4F-81756DB68DF0}\ProxyStubClsid32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{06AD210F-5953-4201-BB4F-81756DB68DF0}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{5FA67120-F0AC-4A6E-B806-AECC0D13D9EF}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{5FA67120-F0AC-4A6E-B806-AECC0D13D9EF}\1.0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{5FA67120-F0AC-4A6E-B806-AECC0D13D9EF}\1.0\
0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{5FA67120-F0AC-4A6E-B806-AECC0D13D9EF}\1.0\
0\win32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{5FA67120-F0AC-4A6E-B806-AECC0D13D9EF}\1.0\
FLAGS

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{5FA67120-F0AC-4A6E-B806-AECC0D13D9EF}\1.0\
HELPDIR

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
BaiduRJDownloader

It adds the following registry entries:

"ieBDSoftHelperPlug Implement Class"HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
AppID\{0031830A-A9D3-4f64-B6E8-3D55B68F4F9B}
(Default) = "ieCommonPlugin"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
AppID\ieCommonPlugin.DLL
AppID = "{0031830A-A9D3-4f64-B6E8-3D55B68F4F9B}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
ieBDSoftHelperPlug.Implement.1
(Default) = "ieBDSoftHelperPlug Implement Class"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
ieBDSoftHelperPlug.Implement.1\CLSID
(Default) = "{D3C9CF85-72D2-4d22-B16A-0B682403AB84}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
ieBDSoftHelperPlug.Implement
(Default) = "ieBDSoftHelperPlug Implement Class"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
ieBDSoftHelperPlug.Implement\CLSID
(Default) = "{D3C9CF85-72D2-4d22-B16A-0B682403AB84}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
ieBDSoftHelperPlug.Implement\CurVer
(Default) = "ieBDSoftHelperPlug.Implement.1"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{D3C9CF85-72D2-4d22-B16A-0B682403AB84}
(Default) = "ieBDSoftHelperPlug Implement Class"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{D3C9CF85-72D2-4d22-B16A-0B682403AB84}\ProgID
(Default) = "ieBDSoftHelperPlug.Implement.1"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{D3C9CF85-72D2-4d22-B16A-0B682403AB84}\VersionIndependentProgID
(Default) = "ieBDSoftHelperPlug.Implement"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{D3C9CF85-72D2-4d22-B16A-0B682403AB84}\InprocServer32
(Default) = "%Program Files%\baidu\BaiduRJDownloader\2.0.0.290\ieBDSoftHelperPlug.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{D3C9CF85-72D2-4d22-B16A-0B682403AB84}\InprocServer32
ThreadingModel = "Apartment"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{D3C9CF85-72D2-4d22-B16A-0B682403AB84}\TypeLib
(Default) = "{5FA67120-F0AC-4a6e-B806-AECC0D13D9EF}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{5FA67120-F0AC-4A6E-B806-AECC0D13D9EF}\1.0
(Default) = "ieCommonPlugin 1.0 Type Library"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{5FA67120-F0AC-4A6E-B806-AECC0D13D9EF}\1.0\
FLAGS
(Default) = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{5FA67120-F0AC-4A6E-B806-AECC0D13D9EF}\1.0\
0\win32
(Default) = "%Program Files%\baidu\BaiduRJDownloader\2.0.0.290\ieBDSoftHelperPlug.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{5FA67120-F0AC-4A6E-B806-AECC0D13D9EF}\1.0\
HELPDIR
(Default) = ""

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{06AD210F-5953-4201-BB4F-81756DB68DF0}
(Default) = "IImplement"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{06AD210F-5953-4201-BB4F-81756DB68DF0}\ProxyStubClsid
(Default) = "{00020424-0000-0000-C000-000000000046}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{06AD210F-5953-4201-BB4F-81756DB68DF0}\ProxyStubClsid32
(Default) = "{00020424-0000-0000-C000-000000000046}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{06AD210F-5953-4201-BB4F-81756DB68DF0}\TypeLib
(Default) = "{5FA67120-F0AC-4A6E-B806-AECC0D13D9EF}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{06AD210F-5953-4201-BB4F-81756DB68DF0}\TypeLib
Version = "1.0"

HKEY_LOCAL_MACHINE\SOFTWARE\baidu\
BaiduRJDownloader
InstallDir = "%Program Files%\baidu\BaiduRJDownloader\2.0.0.290"

HKEY_LOCAL_MACHINE\SOFTWARE\baidu\
BaiduRJDownloader
Version = "2.0.0.290"

HKEY_LOCAL_MACHINE\SOFTWARE\baidu\
BaiduRJDownloader
IEPluginPath = "%Program Files%\baidu\BaiduRJDownloader\2.0.0.290\ieBDSoftHelperPlug.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\baidu\
BaiduRJDownloader
SupplyID = "10002"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
*\shell\dlhelper
icon = "%Program Files%\baidu\BaiduRJDownloader\2.0.0.290\bdrcdl.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
*\shell\dlhelper\
command
(Default) = ""%Program Files%\baidu\BaiduRJDownloader\2.0.0.290\BDHYServer.exe" "%1""

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
BaiduRJDownloader
UninstallString = "%Program Files%\baidu\BaiduRJDownloader\2.0.0.290\uninstaller.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
BaiduRJDownloader
Publisher = "Beijing baidu Netcom science and technology co.ltd"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
BaiduRJDownloader
DisplayVersion = "2.0.0.290"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
BaiduRJDownloader
DisplayIcon = "%Program Files%\baidu\BaiduRJDownloader\2.0.0.290\mindownload.ico"

HKCU\Software\Microsoft\
Windows\CurrentVersion\Ext\
Stats\{D3C9CF85-72D2-4d22-B16A-0B682403AB84}\iexplore\
AllowedDomains\*
(Default) = ""

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{849EE4F0-6AEA-41c9-8A21-5F700C3BBDD5}
AppName = "bdrcdl.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{849EE4F0-6AEA-41c9-8A21-5F700C3BBDD5}
AppPath = "%Program Files%\baidu\BaiduRJDownloader\2.0.0.290"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{849EE4F0-6AEA-41c9-8A21-5F700C3BBDD5}
Policy = "3"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\GroupOrderList
bddriver = "02 00 00 00 01 00 00 00 02 00 00 00"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\bd0001
Type = "1"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\bd0001
Start = "1"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\bd0001
ErrorControl = "0"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\bd0001
DisplayName = "bd0001"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\bd0001
Description = "bd0001"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\bd0001
ImagePath = "system32\DRIVERS\bd0001.sys"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\bd0001
Group = "bddriver"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\bd0001
Tag = "1"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\bd0004
Type = "1"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\bd0004
Start = "1"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\bd0004
ErrorControl = "0"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\bd0004
DisplayName = "bd0004"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\bd0004
Description = "bd0004"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\bd0004
ImagePath = "system32\DRIVERS\bd0004.sys"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\bd0004
Group = "bddriver"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\bd0004
Tag = "2"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\bd0004
InstallDir_gj = "%Program Files%\baidu\BaiduRJDownloader\2.0.0.290"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\BDArKit
Type = "1"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\BDArKit
Start = "2"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\BDArKit
ErrorControl = "0"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\BDArKit
DisplayName = "BDArKit"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\BDArKit
Description = "BDArKit"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\BDArKit
ImagePath = "system32\DRIVERS\BDArKit.sys"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\BDArKit
Group = "bddriver"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\BDArKit
Tag = "4"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\BDMWrench
Type = "1"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\BDMWrench
Start = "1"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\BDMWrench
ErrorControl = "0"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\BDMWrench
DisplayName = "BDMWrench"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\BDMWrench
Description = "BDMWrench"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\BDMWrench
ImagePath = "system32\DRIVERS\BDMWrench.sys"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\BDMWrench
Group = "bddriver"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\BDMWrench
Tag = "5"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Unknown\shell\opendlg\
command
(Default) = "%Program Files%\baidu\BaiduRJDownloader\2.0.0.290\BDHYServer.exe 1 2 "%1""

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Unknown\shell\openas\
command
(Default) = "%Program Files%\baidu\BaiduRJDownloader\2.0.0.290\BDHYServer.exe 1 3 "%1""

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\GroupOrderList
bddriver = "02 00 00 00 01 00 00 00 02 00 00 00"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Unknown\shell\opendlg\
command
(Default) = "%Program Files%\baidu\BaiduRJDownloader\2.0.0.290\BDHYServer.exe 1 2 "%1""

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Unknown\shell\openas\
command
(Default) = "%Program Files%\baidu\BaiduRJDownloader\2.0.0.290\BDHYServer.exe 1 3 "%1""

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
BaiduRJDownloader
DisplayName = "百度下载助手 2.0.0.290"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
*\shell\dlhelper
(Default) = "使用 下载助手 打开"

Backdoor Routine

This Potentially Unwanted Application connects to the following websites to send and receive information:

  • dl.{BLOCKED}y.{BLOCKED}u.com

Other Details

This Potentially Unwanted Application adds the following scheduled tasks:

  • Task Name: BDDL Server
    Schedule: Every 30 minutes
    Task to be run: "%Program Files%\baidu\BaiduRJDownloader\2.0.0.290\AppUpdater.exe" schtask

(Note: %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.)

NOTES:
This Potentially Unwanted Application requires administrator rights to install itself. Upon execution, it automatically installs itself without user prompts.

  SOLUTION

Minimum Scan Engine:

9.850

SSAPI PATTERN File:

1.945.00

SSAPI PATTERN Date:

03 May 2018

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

Remove PUA_BAIDURJDOWNLOADER.GA by using its own Uninstall option

[ Learn More ]
To uninstall the grayware process

Step 4

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.  
  • %ProgramData%\Baidu
  • %Program Files%\baidu
  • %User Temp%\nso{random}.tmp

Step 5

Scan your computer with your Trend Micro product to delete files detected as PUA_BAIDURJDOWNLOADER.GA. 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 the following Trend Micro Support pages for more information:


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