ALIASES:

Trojan:Win32/Wudoo.A (Microsoft); BackDoor-CVM.gen (McAfee); Downloader (Symantec); Trojan-Clicker.Win32.Agent.io (Kaspersky)

 PLATFORM:

Windows 2000, Windows XP, Windows 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: 660,342 bytes
File Type: EXE
Memory Resident: Yes
Initial Samples Received Date: 31 Oct 2012

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:

  • %Program Files%\superutilbar

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.)

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\{6CFD436C-7AAD-4e50-992F-C0C87A94CAD2}

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\EventLog\Application\
SoSCAR

Other System Modifications

This Trojan deletes the following files:

  • %User Temp%\nsc1.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_LOCAL_MACHINE\software\microsoft\
directoutput

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\AtWork\Parameters

HKEY_CLASSES_ROOT\6781.TOOLBAR.1

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
6781.TOOLBAR.1\CLSID

HKEY_CLASSES_ROOT\6781.TOOLBAR

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
6781.TOOLBAR\CLSID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
6781.TOOLBAR\CurVer

HKEY_CLASSES_ROOT\6781.TOOLBARLOADER.1

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
6781.TOOLBARLOADER.1\CLSID

HKEY_CLASSES_ROOT\6781.TOOLBARLOADER

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
6781.TOOLBARLOADER\CLSID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
6781.TOOLBARLOADER\CurVer

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{03465FF5-00AE-411a-9C34-960ED566EC03}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{03465FF5-00AE-411a-9C34-960ED566EC03}\ProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{03465FF5-00AE-411a-9C34-960ED566EC03}\VersionIndependentProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{03465FF5-00AE-411a-9C34-960ED566EC03}\Programmable

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{03465FF5-00AE-411a-9C34-960ED566EC03}\InprocServer32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{03465FF5-00AE-411a-9C34-960ED566EC03}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{6CFD436C-7AAD-4e50-992F-C0C87A94CAD2}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{6CFD436C-7AAD-4e50-992F-C0C87A94CAD2}\ProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{6CFD436C-7AAD-4e50-992F-C0C87A94CAD2}\VersionIndependentProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{6CFD436C-7AAD-4e50-992F-C0C87A94CAD2}\Programmable

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{6CFD436C-7AAD-4e50-992F-C0C87A94CAD2}\InprocServer32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{6CFD436C-7AAD-4e50-992F-C0C87A94CAD2}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{03D0C547-EBAD-43D9-8B57-DE16E7A93B52}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{03D0C547-EBAD-43D9-8B57-DE16E7A93B52}\0.0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{03D0C547-EBAD-43D9-8B57-DE16E7A93B52}\0.0\
FLAGS

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{03D0C547-EBAD-43D9-8B57-DE16E7A93B52}\0.0\
0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{03D0C547-EBAD-43D9-8B57-DE16E7A93B52}\0.0\
0\win32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{03D0C547-EBAD-43D9-8B57-DE16E7A93B52}\0.0\
HELPDIR

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
ʵÓÃËÑË÷¹¤¾ßÌõ

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\Eventlog\Application\
SoSCAR
EventMessageFile = "%System%\RUNDLL2000.EXE %System%\WBEM\AWVBD.DLL,Export 1087"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\Eventlog\Application\
SoSCAR
TypesSupported = "7"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
R29udIW0AYKKAB== = "NEB1NEV2PFVxNFV3"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
S3WqAB== = "PVFaNEJ0SkWCNEGHOFR4NEh4SUR3NFR1RUZ2RkKENEh="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
AYimcnGuAR== = "RaqdW0mPSF9YV1yUXWOVSV0aNmyYRlWOYFGYWlKFMlSNUB=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
Z29vAn5icXV= = "RaqdW0mPSF9YV1yUXWOVSV0aNmyYRlWOYH9kcX9zMnStcB=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
R29vAmWxAHG0AWSqcXV= = "NUN1NUZ1OUF1Oh=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
WHizAXGlTXR= = "NUJ4"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
V2OwdnVwcHW2AXx= = "NB=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
V2OwdnVwd3CwdoSa = "NB=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
V2OwdnVwd3SwZ2t= = "NB=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5V3SidoSVbX1mMR== = "NUN1NUZ1OUF1PR=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VHWzbX9lMR== = "NB=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VHWzbX9lR291coRu = "NB=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VHWzbX9lTX5lAYhu = "MUF="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VHWzbX9lRXO0UoWuMR== = "NB=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5RXO0VH9qcoSKcnSmfD0= = "MUF="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VnWndnWabGOmdnmicD0= = "NB=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5V3SidoSVbX1mMXOwcnZ= = "NUN1NUZ1OUF1PR=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VHWzbX9lMXOwcnZ= = "NB=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VHWzbX9lR291coRuZ29vAh== = "NB=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VHWzbX9lTX5lAYhuZ29vAh== = "MUF="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VHWzbX9lRXO0UoWuMXOwcnZ= = "NB=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5RXO0VH9qcoSKcnSmfD1kc25n = "MUF="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VnWndnWabGOmdnmicD1kc25n = "NB=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5V3SidoSVbX1mMYK1ch== = "NUN1NUZ1OUF1PR=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VHWzbX9lMYK1ch== = "NB=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VHWzbX9lR291coRudoWv = "NB=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VHWzbX9lTX5lAYhudoWv = "MUF="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VHWzbX9lRXO0UoWuMYK1ch== = "NB=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5RXO0VH9qcoSKcnSmfD1zeX4= = "MUF="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VnWndnWabGOmdnmicD1zeX4= = "NB=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5V3SidoSVbX1mMXmvbnWkeHF= = "NUN1NUZ1OUF1PR=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VHWzbX9lMXmvbnWkeHF= = "NB=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VHWzbX9lR291coRubX5rAXO0ZR== = "NB=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VHWzbX9lTX5lAYhubX5rAXO0ZR== = "MUF="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VHWzbX9lRXO0UoWuMXmvbnWkeHF= = "NB=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5RXO0VH9qcoSKcnSmfD1qcnqmZ3Si = "MUF="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VnWndnWabGOmdnmicD1qcnqmZ3Si = "NB=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5V3SidoSVbX1mMYOmeHixAHSiZR== = "NUN1NUZ1OUF1PR=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VHWzbX9lMYOmeHixAHSiZR== = "NR=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VHWzbX9lR291coRud2W0bIClAHGi = "NaB="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VHWzbX9lTX5lAYhud2W0bIClAHGi = "MUF="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VHWzbX9lRXO0UoWuMYOmeHixAHSiZR== = "NR=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5RXO0VH9qcoSKcnSmfD1aAYSpdHSlZXF= = "MUF="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VnWndnWabGOmdnmicD1aAYSpdHSlZXF= = "NB=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5V3SidoSVbX1mMYOmeHixAHSjZh== = "NUN1NUZ1OUF1PR=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VHWzbX9lMYOmeHixAHSjZh== = "NR=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VHWzbX9lR291coRud2W0bIClAHKj = "NkB="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VHWzbX9lTX5lAYhud2W0bIClAHKj = "MUF="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VHWzbX9lRXO0UoWuMYOmeHixAHSjZh== = "NR=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5RXO0VH9qcoSKcnSmfD1aAYSpdHSlZnJ= = "MUF="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VnWndnWabGOmdnmicD1aAYSpdHSlZnJ= = "NB=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5V3SidoSVbX1mMYOmeHixAHSkZx== = "NUN1NUZ1OUF1PR=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VHWzbX9lMYOmeHixAHSkZx== = "NR=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VHWzbX9lR291coRud2W0bIClAHOk = "NUB="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VHWzbX9lTX5lAYhud2W0bIClAHOk = "MUF="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VHWzbX9lRXO0UoWuMYOmeHixAHSkZx== = "NR=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5RXO0VH9qcoSKcnSmfD1aAYSpdHSlZ2N= = "MUF="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
SHG5VHWzbX9lMx==SHG5VnWndnWabGOmdnmicD1aAYSpdHSlZ2N= = "NB=="

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
directoutput
V3SidoSVbX1mMx==Snmzd3SUeHGzeB== = "NUN1NUZ1OUF1PR=="

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\AtWork
DisplayName = "System Security"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\AtWork
Description = "ÆôÓÃÄں˵ݲȫ·þÎñÆ÷£¬±£»¤ Windows µÄ·À»ðǽºÍÄÚÖùýÂËÆ÷Õý³£ÔËÐС£ÎÞ·¨ÖÕÖ¹´Ë·þÎñ¡£"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\AtWork\Parameters
ServiceDll = "%System%\kbohd.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{03465FF5-00AE-411a-9C34-960ED566EC03}\InprocServer32
ThreadingModel = "Apartment"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{6CFD436C-7AAD-4e50-992F-C0C87A94CAD2}\InprocServer32
ThreadingModel = "Apartment"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Toolbar
{03465FF5-00AE-411a-9C34-960ED566EC03} = "ʵÓÃËÑË÷¹¤¾ßÌõ2.0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
ʵÓÃËÑË÷¹¤¾ßÌõ
DisplayName = "ʵÓÃËÑË÷¹¤¾ßÌõ"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
ʵÓÃËÑË÷¹¤¾ßÌõ
UninstallString = "%Program Files%\superutilbar\uninst.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
ʵÓÃËÑË÷¹¤¾ßÌõ
DisplayVersion = "V2.23"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
ʵÓÃËÑË÷¹¤¾ßÌõ
URLInfoAbout = "http://www.{BLOCKED}gsousuo.com"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
ʵÓÃËÑË÷¹¤¾ßÌõ
Publisher = "www.shiyongsousuo.com"

It modifies the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\SvcHost
netsvcs = "{random characters}"

(Note: The default value data of the said registry entry is {random values}.)

Dropping Routine

This Trojan drops the following files:

  • %Program Files%\Common Files\System\Updaterun.exe
  • %System%\rundll2000.exe
  • %System%\wbem\ocmor.dll
  • %System%\wbem\awvbd.dll
  • %System%\advport.dll
  • %System%\kbohd.dll
  • %Windows%\f2.exe
  • %Windows%\bar.exe
  • %Windows%\g3.exe
  • Score.txt
  • %System%\drivers\zrjec.sys
  • %System%\aclbu.dll
  • %User Temp%\nss2.tmp
  • %Program Files%\superutilbar\superutilbar.dll
  • %Program Files%\superutilbar\uninst.exe
  • %System%\drivers\msqmx.sys

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.. %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.. %Windows% is the Windows folder, which is usually C:\Windows or C:\WINNT.. %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.)

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine: 9.300

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

Restart in Safe Mode

[ Learn More ]

Step 3

Close all opened browser windows

Step 4

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_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\EventLog\Application
    • SoSCAR
  • In HKEY_LOCAL_MACHINE\software\microsoft
    • directoutput
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\AtWork
    • Parameters
  • In HKEY_CLASSES_ROOT
    • 6781.TOOLBAR.1
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\6781.TOOLBAR.1
    • CLSID
  • In HKEY_CLASSES_ROOT
    • 6781.TOOLBAR
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\6781.TOOLBAR
    • CLSID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\6781.TOOLBAR
    • CurVer
  • In HKEY_CLASSES_ROOT
    • 6781.TOOLBARLOADER.1
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\6781.TOOLBARLOADER.1
    • CLSID
  • In HKEY_CLASSES_ROOT
    • 6781.TOOLBARLOADER
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\6781.TOOLBARLOADER
    • CLSID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\6781.TOOLBARLOADER
    • CurVer
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
    • {03465FF5-00AE-411a-9C34-960ED566EC03}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{03465FF5-00AE-411a-9C34-960ED566EC03}
    • ProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{03465FF5-00AE-411a-9C34-960ED566EC03}
    • VersionIndependentProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{03465FF5-00AE-411a-9C34-960ED566EC03}
    • Programmable
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{03465FF5-00AE-411a-9C34-960ED566EC03}
    • InprocServer32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{03465FF5-00AE-411a-9C34-960ED566EC03}
    • TypeLib
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
    • {6CFD436C-7AAD-4e50-992F-C0C87A94CAD2}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{6CFD436C-7AAD-4e50-992F-C0C87A94CAD2}
    • ProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{6CFD436C-7AAD-4e50-992F-C0C87A94CAD2}
    • VersionIndependentProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{6CFD436C-7AAD-4e50-992F-C0C87A94CAD2}
    • Programmable
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{6CFD436C-7AAD-4e50-992F-C0C87A94CAD2}
    • InprocServer32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{6CFD436C-7AAD-4e50-992F-C0C87A94CAD2}
    • TypeLib
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer
    • Browser Helper Objects
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib
    • {03D0C547-EBAD-43D9-8B57-DE16E7A93B52}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{03D0C547-EBAD-43D9-8B57-DE16E7A93B52}
    • 0.0
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{03D0C547-EBAD-43D9-8B57-DE16E7A93B52}\0.0
    • FLAGS
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{03D0C547-EBAD-43D9-8B57-DE16E7A93B52}.0
    • 0
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{03D0C547-EBAD-43D9-8B57-DE16E7A93B52}\0.0\0
    • win32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{03D0C547-EBAD-43D9-8B57-DE16E7A93B52}\0.0
    • HELPDIR
  • In HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall
    • ʵÓÃËÑË÷¹¤¾ßÌõ

Step 5

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_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Eventlog\Application\SoSCAR
    • EventMessageFile = "%System%\RUNDLL2000.EXE %System%\WBEM\AWVBD.DLL,Export 1087"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Eventlog\Application\SoSCAR
    • TypesSupported = "7"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • R29udIW0AYKKAB== = "NEB1NEV2PFVxNFV3"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • S3WqAB== = "PVFaNEJ0SkWCNEGHOFR4NEh4SUR3NFR1RUZ2RkKENEh="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • AYimcnGuAR== = "RaqdW0mPSF9YV1yUXWOVSV0aNmyYRlWOYFGYWlKFMlSNUB=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • Z29vAn5icXV= = "RaqdW0mPSF9YV1yUXWOVSV0aNmyYRlWOYH9kcX9zMnStcB=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • R29vAmWxAHG0AWSqcXV= = "NUN1NUZ1OUF1Oh=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • WHizAXGlTXR= = "NUJ4"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • V2OwdnVwcHW2AXx= = "NB=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • V2OwdnVwd3CwdoSa = "NB=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • V2OwdnVwd3SwZ2t= = "NB=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5V3SidoSVbX1mMR== = "NUN1NUZ1OUF1PR=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VHWzbX9lMR== = "NB=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VHWzbX9lR291coRu = "NB=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VHWzbX9lTX5lAYhu = "MUF="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VHWzbX9lRXO0UoWuMR== = "NB=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5RXO0VH9qcoSKcnSmfD0= = "MUF="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VnWndnWabGOmdnmicD0= = "NB=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5V3SidoSVbX1mMXOwcnZ= = "NUN1NUZ1OUF1PR=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VHWzbX9lMXOwcnZ= = "NB=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VHWzbX9lR291coRuZ29vAh== = "NB=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VHWzbX9lTX5lAYhuZ29vAh== = "MUF="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VHWzbX9lRXO0UoWuMXOwcnZ= = "NB=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5RXO0VH9qcoSKcnSmfD1kc25n = "MUF="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VnWndnWabGOmdnmicD1kc25n = "NB=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5V3SidoSVbX1mMYK1ch== = "NUN1NUZ1OUF1PR=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VHWzbX9lMYK1ch== = "NB=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VHWzbX9lR291coRudoWv = "NB=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VHWzbX9lTX5lAYhudoWv = "MUF="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VHWzbX9lRXO0UoWuMYK1ch== = "NB=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5RXO0VH9qcoSKcnSmfD1zeX4= = "MUF="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VnWndnWabGOmdnmicD1zeX4= = "NB=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5V3SidoSVbX1mMXmvbnWkeHF= = "NUN1NUZ1OUF1PR=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VHWzbX9lMXmvbnWkeHF= = "NB=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VHWzbX9lR291coRubX5rAXO0ZR== = "NB=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VHWzbX9lTX5lAYhubX5rAXO0ZR== = "MUF="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VHWzbX9lRXO0UoWuMXmvbnWkeHF= = "NB=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5RXO0VH9qcoSKcnSmfD1qcnqmZ3Si = "MUF="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VnWndnWabGOmdnmicD1qcnqmZ3Si = "NB=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5V3SidoSVbX1mMYOmeHixAHSiZR== = "NUN1NUZ1OUF1PR=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VHWzbX9lMYOmeHixAHSiZR== = "NR=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VHWzbX9lR291coRud2W0bIClAHGi = "NaB="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VHWzbX9lTX5lAYhud2W0bIClAHGi = "MUF="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VHWzbX9lRXO0UoWuMYOmeHixAHSiZR== = "NR=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5RXO0VH9qcoSKcnSmfD1aAYSpdHSlZXF= = "MUF="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VnWndnWabGOmdnmicD1aAYSpdHSlZXF= = "NB=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5V3SidoSVbX1mMYOmeHixAHSjZh== = "NUN1NUZ1OUF1PR=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VHWzbX9lMYOmeHixAHSjZh== = "NR=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VHWzbX9lR291coRud2W0bIClAHKj = "NkB="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VHWzbX9lTX5lAYhud2W0bIClAHKj = "MUF="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VHWzbX9lRXO0UoWuMYOmeHixAHSjZh== = "NR=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5RXO0VH9qcoSKcnSmfD1aAYSpdHSlZnJ= = "MUF="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VnWndnWabGOmdnmicD1aAYSpdHSlZnJ= = "NB=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5V3SidoSVbX1mMYOmeHixAHSkZx== = "NUN1NUZ1OUF1PR=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VHWzbX9lMYOmeHixAHSkZx== = "NR=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VHWzbX9lR291coRud2W0bIClAHOk = "NUB="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VHWzbX9lTX5lAYhud2W0bIClAHOk = "MUF="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VHWzbX9lRXO0UoWuMYOmeHixAHSkZx== = "NR=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5RXO0VH9qcoSKcnSmfD1aAYSpdHSlZ2N= = "MUF="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • SHG5VHWzbX9lMx==SHG5VnWndnWabGOmdnmicD1aAYSpdHSlZ2N= = "NB=="
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\directoutput
    • V3SidoSVbX1mMx==Snmzd3SUeHGzeB== = "NUN1NUZ1OUF1PR=="
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\AtWork
    • DisplayName = "System Security"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\AtWork
    • Description = "ÆôÓÃÄں˵ݲȫ·þÎñÆ÷£¬±£»¤ Windows µÄ·À»ðǽºÍÄÚÖùýÂËÆ÷Õý³£ÔËÐС£ÎÞ·¨ÖÕÖ¹´Ë·þÎñ¡£"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\AtWork\Parameters
    • ServiceDll = "%System%\kbohd.dll"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{03465FF5-00AE-411a-9C34-960ED566EC03}\InprocServer32
    • ThreadingModel = "Apartment"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{6CFD436C-7AAD-4e50-992F-C0C87A94CAD2}\InprocServer32
    • ThreadingModel = "Apartment"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Toolbar
    • {03465FF5-00AE-411a-9C34-960ED566EC03} = "ʵÓÃËÑË÷¹¤¾ßÌõ2.0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ʵÓÃËÑË÷¹¤¾ßÌõ
    • DisplayName = "ʵÓÃËÑË÷¹¤¾ßÌõ"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ʵÓÃËÑË÷¹¤¾ßÌõ
    • UninstallString = "%Program Files%\superutilbar\uninst.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ʵÓÃËÑË÷¹¤¾ßÌõ
    • DisplayVersion = "V2.23"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ʵÓÃËÑË÷¹¤¾ßÌõ
    • URLInfoAbout = "http://www.{BLOCKED}gsousuo.com"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ʵÓÃËÑË÷¹¤¾ßÌõ
    • Publisher = "www.shiyongsousuo.com"

Step 6

Restore this modified 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_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SvcHost
    • From: netsvcs = "{random characters}"
      To: netsvcs = ""{random values}""

Step 7

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.
  • %Program Files%\Common Files\System\Updaterun.exe
  • %System%\rundll2000.exe
  • %System%\wbem\ocmor.dll
  • %System%\wbem\awvbd.dll
  • %System%\advport.dll
  • %System%\kbohd.dll
  • %Windows%\f2.exe
  • %Windows%\bar.exe
  • %Windows%\g3.exe
  • Score.txt
  • %System%\drivers\zrjec.sys
  • %System%\aclbu.dll
  • %User Temp%\nss2.tmp
  • %Program Files%\superutilbar\superutilbar.dll
  • %Program Files%\superutilbar\uninst.exe
  • %System%\drivers\msqmx.sys

Step 8

Search and delete this folder

[ 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.
  • %Program Files%\superutilbar

Step 9

Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_QQHELPER.PA. 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 10

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%\nsc1.tmp


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