TROJ_DROPPER.IPJ


 ALIASES:

Downloader.a!wj (McAfee); Trojan.Win32.Jorik.Downloader.af (Kaspersky); Trojan.Win32.Generic.pak!cobra (Sunbelt); Gen:Variant.Clicker.10 (FSecure)

 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.

It modifies files, disabling programs and applications from properly running.

  TECHNICAL DETAILS

File Size:

966,677 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

28 Jul 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:

  • %System Root%\DOCUME~1
  • %System Root%\DOCUME~1\ADMINI~1
  • %User Profile%\LOCALS~1
  • %User Temp%\nsm3.tmp
  • %Program Files%\Coopen
  • %Program Files%\Coopen\conf
  • %Program Files%\Coopen\Templete
  • %Program Files%\Coopen\Resource
  • %Program Files%\Coopen\Resource\SkinFormal
  • %Program Files%\Coopen\image
  • %Program Files%\Coopen\image\Wallpaper
  • %Program Files%\Coopen\image\Wallpaper\local wallpaper
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper
  • %Program Files%\Coopen\image\Photo
  • %Program Files%\Coopen\image\Photo\local Photo
  • %System Root%\Documents and Settings\Administrator
  • %Start Menu%\Programs\Coopen
  • %Program Files%\Coopen\image\Wallpaper\local wallpaper\temp
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper\todaypic
  • %Program Files%\Coopen\image\AD

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

Other System Modifications

This Trojan modifies the following files:

  • %Application Data%\GDIPFONTCACHEV1.DAT

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Windows\Profiles\{user name}\Application Data on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Application Data on Windows NT, and C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, XP, and Server 2003.)

It deletes the following files:

  • %User Temp%\nsg1.tmp
  • %User Temp%\nsm3.tmp
  • %Windows%\fonts\msgothic.ttf
  • %Windows%\fonts\msuigoth.ttf
  • %Windows%\fonts\MSMINCHO.TTF
  • %Windows%\fonts\Gulim.ttf
  • %Windows%\fonts\Gulimche.ttf
  • %Windows%\fonts\Dotum.ttf
  • %Windows%\fonts\Batang.ttf
  • %Windows%\fonts\Gungsuh.ttf
  • %Windows%\fonts\Simsun.ttf
  • %Windows%\fonts\nsimsun.ttf
  • %Windows%\fonts\MingLiU.ttf
  • %Windows%\fonts\pmingliu.ttf
  • %System%\SET5.tmp
  • %System%\kbd101b.dll
  • %System%\SET7.tmp
  • %System%\kbd101c.dll
  • %System%\SET9.tmp
  • %System%\kbd103.dll
  • %System%\SETB.tmp
  • %System%\kbd106.dll
  • %System%\SETD.tmp
  • %System%\kbdjpn.dll
  • %System%\SETF.tmp
  • %System%\kbdkor.dll

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

It adds the following registry keys:

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\App Paths\
Coopen.exe

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
Coopen²¥·ÅÆ÷

HKEY_CLASSES_ROOT\CoopenActiveControl.CoopenControl.1

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CoopenActiveControl.CoopenControl.1\CLSID

HKEY_CLASSES_ROOT\CoopenActiveControl.CoopenControl

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CoopenActiveControl.CoopenControl\CLSID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CoopenActiveControl.CoopenControl\CurVer

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{51D33728-411D-423D-B1C3-92717AB6970A}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{51D33728-411D-423D-B1C3-92717AB6970A}\ProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{51D33728-411D-423D-B1C3-92717AB6970A}\VersionIndependentProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{51D33728-411D-423D-B1C3-92717AB6970A}\Programmable

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{51D33728-411D-423D-B1C3-92717AB6970A}\InprocServer32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{51D33728-411D-423D-B1C3-92717AB6970A}\Control

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{51D33728-411D-423D-B1C3-92717AB6970A}\Insertable

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{51D33728-411D-423D-B1C3-92717AB6970A}\ToolboxBitmap32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{51D33728-411D-423D-B1C3-92717AB6970A}\MiscStatus

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{51D33728-411D-423D-B1C3-92717AB6970A}\MiscStatus\
1

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{51D33728-411D-423D-B1C3-92717AB6970A}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{51D33728-411D-423D-B1C3-92717AB6970A}\Version

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{D3ECD831-4859-4374-A7B4-46A7E4D016F7}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{D3ECD831-4859-4374-A7B4-46A7E4D016F7}\1.0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{D3ECD831-4859-4374-A7B4-46A7E4D016F7}\1.0\
FLAGS

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{D3ECD831-4859-4374-A7B4-46A7E4D016F7}\1.0\
0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{D3ECD831-4859-4374-A7B4-46A7E4D016F7}\1.0\
0\win32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{D3ECD831-4859-4374-A7B4-46A7E4D016F7}\1.0\
HELPDIR

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8A6C03BB-F95D-4845-B571-A4EBFA48F77F}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8A6C03BB-F95D-4845-B571-A4EBFA48F77F}\ProxyStubClsid

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8A6C03BB-F95D-4845-B571-A4EBFA48F77F}\ProxyStubClsid32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8A6C03BB-F95D-4845-B571-A4EBFA48F77F}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{B0C95278-1A3D-4AEA-AC49-3296B8D699DA}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{B0C95278-1A3D-4AEA-AC49-3296B8D699DA}\ProxyStubClsid

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{B0C95278-1A3D-4AEA-AC49-3296B8D699DA}\ProxyStubClsid32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{B0C95278-1A3D-4AEA-AC49-3296B8D699DA}\TypeLib

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\International\CpMRU

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Coopen²¥·ÅÆ÷
DisplayName = "Coopen²¥·ÅÆ÷"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Coopen²¥·ÅÆ÷
UninstallString = "%Program Files%\Coopen\uninst.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Coopen²¥·ÅÆ÷
DisplayIcon = "%Program Files%\Coopen\Coopen.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Coopen²¥·ÅÆ÷
URLInfoAbout = "http://www.Coopen.cn"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Coopen²¥·ÅÆ÷
Publisher = "Beijing Capital Online Network Technology Co.,Ltd"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Coopen²¥·ÅÆ÷
User = "%Desktop%"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{51D33728-411D-423D-B1C3-92717AB6970A}\InprocServer32
ThreadingModel = "Apartment"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8A6C03BB-F95D-4845-B571-A4EBFA48F77F}\TypeLib
Version = "1.0"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{B0C95278-1A3D-4AEA-AC49-3296B8D699DA}\TypeLib
Version = "1.0"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\International\CpMRU
Enable = "1"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\International\CpMRU
Size = "a"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\International\CpMRU
InitHits = "64"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\International\CpMRU
Factor = "14"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\International
W2KLpk = "1"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\International
W2KLpk = "0"

It modifies the following registry entries:

HKEY_CURRENT_USER\Control Panel\Desktop
SCRNSAVE.EXE = "%Program Files%\Coopen\Coopen.scr"

(Note: The default value data of the said registry entry is %Windows%\system32\logon.scr.)

HKEY_CURRENT_USER\Software\Microsoft\
GDIPlus
FontCachePath = "%Application Data%"

(Note: The default value data of the said registry entry is %User Profile%\Local Settings\Application Data.)

Dropping Routine

This Trojan drops the following files:

  • %User Temp%\nsm2.tmp
  • %User Temp%\nsm3.tmp\System.dll
  • \CCPMachineInfo.dll
  • %User Temp%\nsm3.tmp\KillProcDLL.dll
  • %Program Files%\Coopen\Coopen.exe
  • %User Temp%\nsm3.tmp\install.bmp
  • %Program Files%\Coopen\CoopenAir.exe
  • %Program Files%\Coopen\CoopenMainManager.dll
  • %Program Files%\Coopen\CoopenActiveControl108.dll
  • %Program Files%\Coopen\licence.txt
  • %Program Files%\Coopen\conf\ModeAChannelList.txt
  • %Program Files%\Coopen\conf\ModeAChannelListReal.txt
  • %Program Files%\Coopen\conf\PluginConfig.ini
  • %Program Files%\Coopen\Templete\ModeC.tpl
  • %Program Files%\Coopen\Templete\ModeB.tpl
  • %Program Files%\Coopen\Templete\ModeB_logo.jpg
  • %Program Files%\Coopen\Templete\CoopenPhoto.jpg
  • %Program Files%\Coopen\Resource\SkinFormal\Background.png
  • %Program Files%\Coopen\Resource\SkinFormal\Button_Channel.png
  • %Program Files%\Coopen\Resource\SkinFormal\Button_Close.png
  • %Program Files%\Coopen\Resource\SkinFormal\Button_Commit.png
  • %Program Files%\Coopen\Resource\SkinFormal\Button_Next.png
  • %Program Files%\Coopen\Resource\SkinFormal\Button_Pause.png
  • %Program Files%\Coopen\Resource\SkinFormal\Button_Play.png
  • %Program Files%\Coopen\Resource\SkinFormal\Button_Prev.png
  • %Program Files%\Coopen\Resource\SkinFormal\Button_Widget.png
  • %Program Files%\Coopen\Resource\SkinFormal\CheckC.png
  • %Program Files%\Coopen\Resource\SkinFormal\CheckU.png
  • %Program Files%\Coopen\Resource\SkinFormal\Indicator1.png
  • %Program Files%\Coopen\Resource\SkinFormal\Indicator2.png
  • %Program Files%\Coopen\Resource\SkinFormal\MainIcon.png
  • %Program Files%\Coopen\Resource\SkinFormal\Message.png
  • %Program Files%\Coopen\Resource\SkinFormal\Notify.png
  • %Program Files%\Coopen\Resource\SkinFormal\Progress.png
  • %Program Files%\Coopen\Resource\SkinFormal\Push_Cancel.png
  • %Program Files%\Coopen\Resource\SkinFormal\Push_Config.png
  • %Program Files%\Coopen\Resource\SkinFormal\Push_Confirm.png
  • %Program Files%\Coopen\Resource\SkinFormal\Push_Folder.png
  • %Program Files%\Coopen\Resource\SkinFormal\RadioC.png
  • %Program Files%\Coopen\Resource\SkinFormal\RadioU.png
  • %Program Files%\Coopen\Resource\SkinFormal\Synopsis1.png
  • %Program Files%\Coopen\Resource\SkinFormal\SkinClient.ini
  • %Program Files%\Coopen\Resource\SkinFormal\SkinClose.ini
  • %Program Files%\Coopen\Resource\SkinFormal\Synopsis1.ini
  • %Program Files%\Coopen\Templete\DefaultCoopenWallpaper.jpg
  • %Program Files%\Coopen\Coopen.scr
  • %Program Files%\Coopen\image\Wallpaper\local wallpaper\DefaultCoopenWallpaper.jpg
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper\DefaultCoopenWallpaper.jpg
  • %Program Files%\Coopen\image\Photo\local Photo\B_0.jpg
  • %Program Files%\Coopen\image\Photo\local Photo\B_1.jpg
  • %Start Menu%\Programs\Coopen\Coopen²¥·ÅÆ÷.lnk
  • %Program Files%\Coopen\uninst.exe
  • %User Startup%\Coopen²¥·ÅÆ÷.lnk
  • %Desktop%\Coopen.lnk
  • %Program Files%\Coopen\conf\MainParams
  • %Program Files%\Coopen\Templete\Default.tpl
  • %Program Files%\Coopen\conf\TodayInfo
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper\todaypic\PicList.txt
  • %Program Files%\Coopen\conf\SoftLatestVersion.ini
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper\todaypic\13169638236.jpg
  • %Program Files%\Coopen\image\CoopenWallpaper.bmp
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper\todaypic\13163557606.xml
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper\todaypic\13169638286.jpg
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper\todaypic\13163557666.xml
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper\todaypic\13169638336.jpg
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper\todaypic\13163557726.xml
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper\todaypic\13169638376.jpg
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper\todaypic\13163557776.xml
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper\todaypic\925.jpg
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper\todaypic\p-100003-1205.xml
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper\todaypic\13169638426.jpg
  • %System%\SET4.tmp
  • %System%\SET6.tmp
  • %System%\SET8.tmp
  • %System%\SETA.tmp
  • %System%\SETC.tmp
  • %System%\SETE.tmp
  • %Program Files%\Coopen\conf\Coopen.inf
  • %System%\Coopen.scr
  • %Program Files%\Coopen\conf\ModeAChannelList.txt.bak
  • %System%\SET5.tmp
  • %System%\SET7.tmp
  • %System%\SET9.tmp
  • %System%\SETB.tmp
  • %System%\SETD.tmp
  • %System%\SETF.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.. %Program Files% is the default Program Files folder, usually C:\Program Files.. %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Profiles\{user name}\Start Menu on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu on Windows NT and C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000, XP, and Server 2003.. %User Startup% is the current user's Startup folder, which is usually C:\Windows\Profiles\{user name}\Start Menu\Programs\Startup on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu\Programs\Startup on Windows NT, and C:\Documents and Settings\{User name}\Start Menu\Programs\Startup.. %Desktop% is the current user's desktop, which is usually C:\Windows\Profiles\{user name}\Desktop on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Desktop on Windows NT, and C:\Documents and Settings\{User Name}\Desktop on Windows 2000, XP, and Server 2003.. %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://xconf.{BLOCKED}n.cn108/param.aspx?{random characters}
  • http://xconf.{BLOCKED}n.cnwallpaper/CategoryList105.aspx?{random characters}
  • http://xconf.{BLOCKED}n.cnGetPicInfo.txt?{random characters}
  • http://xconf.{BLOCKED}n.cn?{random characters}
  • http://xconf.{BLOCKED}n.cnupgrade/old.php?{random characters}
  • http://xconf.{BLOCKED}n.cn2011/09/25/13169638236.jpg
  • http://xconf.{BLOCKED}n.cn2011/09/18/13163557606.xml
  • http://xconf.{BLOCKED}n.cn2011/09/25/13169638286.jpg
  • http://xconf.{BLOCKED}n.cn2011/09/18/13163557666.xml
  • http://xconf.{BLOCKED}n.cn2011/09/25/13169638336.jpg
  • http://xconf.{BLOCKED}n.cn2011/09/18/13163557726.xml
  • http://xconf.{BLOCKED}n.cn2011/09/25/13169638376.jpg
  • http://xconf.{BLOCKED}n.cn2011/09/18/13163557776.xml
  • http://xconf.{BLOCKED}n.cn201109/925.jpg
  • http://xconf.{BLOCKED}n.cn1672/p-100003-1205.xml
  • http://xconf.{BLOCKED}n.cn2011/09/25/13169638426.jpg
  • http://xconf.{BLOCKED}n.cn2011/09/18/13163557836.xml

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.200

Step 1

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

Step 2

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\Software\Microsoft\Windows\CurrentVersion\App Paths
    • Coopen.exe
  • In HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall
    • Coopen²¥·ÅÆ÷
  • In HKEY_CLASSES_ROOT
    • CoopenActiveControl.CoopenControl.1
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CoopenActiveControl.CoopenControl.1
    • CLSID
  • In HKEY_CLASSES_ROOT
    • CoopenActiveControl.CoopenControl
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CoopenActiveControl.CoopenControl
    • CLSID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CoopenActiveControl.CoopenControl
    • CurVer
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
    • {51D33728-411D-423D-B1C3-92717AB6970A}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{51D33728-411D-423D-B1C3-92717AB6970A}
    • ProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{51D33728-411D-423D-B1C3-92717AB6970A}
    • VersionIndependentProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{51D33728-411D-423D-B1C3-92717AB6970A}
    • Programmable
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{51D33728-411D-423D-B1C3-92717AB6970A}
    • InprocServer32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{51D33728-411D-423D-B1C3-92717AB6970A}
    • Control
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{51D33728-411D-423D-B1C3-92717AB6970A}
    • Insertable
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{51D33728-411D-423D-B1C3-92717AB6970A}
    • ToolboxBitmap32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{51D33728-411D-423D-B1C3-92717AB6970A}
    • MiscStatus
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{51D33728-411D-423D-B1C3-92717AB6970A}\MiscStatus
    • 1
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{51D33728-411D-423D-B1C3-92717AB6970A}
    • TypeLib
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{51D33728-411D-423D-B1C3-92717AB6970A}
    • Version
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib
    • {D3ECD831-4859-4374-A7B4-46A7E4D016F7}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{D3ECD831-4859-4374-A7B4-46A7E4D016F7}
    • 1.0
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{D3ECD831-4859-4374-A7B4-46A7E4D016F7}\1.0
    • FLAGS
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{D3ECD831-4859-4374-A7B4-46A7E4D016F7}\1.0
    • 0
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{D3ECD831-4859-4374-A7B4-46A7E4D016F7}\1.0\0
    • win32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{D3ECD831-4859-4374-A7B4-46A7E4D016F7}\1.0
    • HELPDIR
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
    • {8A6C03BB-F95D-4845-B571-A4EBFA48F77F}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8A6C03BB-F95D-4845-B571-A4EBFA48F77F}
    • ProxyStubClsid
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8A6C03BB-F95D-4845-B571-A4EBFA48F77F}
    • ProxyStubClsid32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8A6C03BB-F95D-4845-B571-A4EBFA48F77F}
    • TypeLib
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
    • {B0C95278-1A3D-4AEA-AC49-3296B8D699DA}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{B0C95278-1A3D-4AEA-AC49-3296B8D699DA}
    • ProxyStubClsid
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{B0C95278-1A3D-4AEA-AC49-3296B8D699DA}
    • ProxyStubClsid32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{B0C95278-1A3D-4AEA-AC49-3296B8D699DA}
    • TypeLib
  • In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\International
    • CpMRU

Step 3

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\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Coopen²¥·ÅÆ÷
    • DisplayName = "Coopen²¥·ÅÆ÷"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Coopen²¥·ÅÆ÷
    • UninstallString = "%Program Files%\Coopen\uninst.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Coopen²¥·ÅÆ÷
    • DisplayIcon = "%Program Files%\Coopen\Coopen.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Coopen²¥·ÅÆ÷
    • URLInfoAbout = "http://www.Coopen.cn"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Coopen²¥·ÅÆ÷
    • Publisher = "Beijing Capital Online Network Technology Co.,Ltd"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Coopen²¥·ÅÆ÷
    • User = "%Desktop%"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{51D33728-411D-423D-B1C3-92717AB6970A}\InprocServer32
    • ThreadingModel = "Apartment"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8A6C03BB-F95D-4845-B571-A4EBFA48F77F}\TypeLib
    • Version = "1.0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{B0C95278-1A3D-4AEA-AC49-3296B8D699DA}\TypeLib
    • Version = "1.0"
  • In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\International\CpMRU
    • Enable = "1"
  • In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\International\CpMRU
    • Size = "a"
  • In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\International\CpMRU
    • InitHits = "64"
  • In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\International\CpMRU
    • Factor = "14"
  • In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\International
    • W2KLpk = "1"
  • In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\International
    • W2KLpk = "0"

Step 4

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_CURRENT_USER\Control Panel\Desktop
    • From: SCRNSAVE.EXE = "%Program Files%\Coopen\Coopen.scr"
      To: SCRNSAVE.EXE = ""%Windows%\system32\logon.scr""
  • In HKEY_CURRENT_USER\Software\Microsoft\GDIPlus
    • From: FontCachePath = "%Application Data%"
      To: FontCachePath = ""%User Profile%\Local Settings\Application Data""

Step 5

Search and delete these files

[ Learn More ]
There may be some component files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • %User Temp%\nsm2.tmp
  • %User Temp%\nsm3.tmp\System.dll
  • \CCPMachineInfo.dll
  • %User Temp%\nsm3.tmp\KillProcDLL.dll
  • %Program Files%\Coopen\Coopen.exe
  • %User Temp%\nsm3.tmp\install.bmp
  • %Program Files%\Coopen\CoopenAir.exe
  • %Program Files%\Coopen\CoopenMainManager.dll
  • %Program Files%\Coopen\CoopenActiveControl108.dll
  • %Program Files%\Coopen\licence.txt
  • %Program Files%\Coopen\conf\ModeAChannelList.txt
  • %Program Files%\Coopen\conf\ModeAChannelListReal.txt
  • %Program Files%\Coopen\conf\PluginConfig.ini
  • %Program Files%\Coopen\Templete\ModeC.tpl
  • %Program Files%\Coopen\Templete\ModeB.tpl
  • %Program Files%\Coopen\Templete\ModeB_logo.jpg
  • %Program Files%\Coopen\Templete\CoopenPhoto.jpg
  • %Program Files%\Coopen\Resource\SkinFormal\Background.png
  • %Program Files%\Coopen\Resource\SkinFormal\Button_Channel.png
  • %Program Files%\Coopen\Resource\SkinFormal\Button_Close.png
  • %Program Files%\Coopen\Resource\SkinFormal\Button_Commit.png
  • %Program Files%\Coopen\Resource\SkinFormal\Button_Next.png
  • %Program Files%\Coopen\Resource\SkinFormal\Button_Pause.png
  • %Program Files%\Coopen\Resource\SkinFormal\Button_Play.png
  • %Program Files%\Coopen\Resource\SkinFormal\Button_Prev.png
  • %Program Files%\Coopen\Resource\SkinFormal\Button_Widget.png
  • %Program Files%\Coopen\Resource\SkinFormal\CheckC.png
  • %Program Files%\Coopen\Resource\SkinFormal\CheckU.png
  • %Program Files%\Coopen\Resource\SkinFormal\Indicator1.png
  • %Program Files%\Coopen\Resource\SkinFormal\Indicator2.png
  • %Program Files%\Coopen\Resource\SkinFormal\MainIcon.png
  • %Program Files%\Coopen\Resource\SkinFormal\Message.png
  • %Program Files%\Coopen\Resource\SkinFormal\Notify.png
  • %Program Files%\Coopen\Resource\SkinFormal\Progress.png
  • %Program Files%\Coopen\Resource\SkinFormal\Push_Cancel.png
  • %Program Files%\Coopen\Resource\SkinFormal\Push_Config.png
  • %Program Files%\Coopen\Resource\SkinFormal\Push_Confirm.png
  • %Program Files%\Coopen\Resource\SkinFormal\Push_Folder.png
  • %Program Files%\Coopen\Resource\SkinFormal\RadioC.png
  • %Program Files%\Coopen\Resource\SkinFormal\RadioU.png
  • %Program Files%\Coopen\Resource\SkinFormal\Synopsis1.png
  • %Program Files%\Coopen\Resource\SkinFormal\SkinClient.ini
  • %Program Files%\Coopen\Resource\SkinFormal\SkinClose.ini
  • %Program Files%\Coopen\Resource\SkinFormal\Synopsis1.ini
  • %Program Files%\Coopen\Templete\DefaultCoopenWallpaper.jpg
  • %Program Files%\Coopen\Coopen.scr
  • %Program Files%\Coopen\image\Wallpaper\local wallpaper\DefaultCoopenWallpaper.jpg
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper\DefaultCoopenWallpaper.jpg
  • %Program Files%\Coopen\image\Photo\local Photo\B_0.jpg
  • %Program Files%\Coopen\image\Photo\local Photo\B_1.jpg
  • %Start Menu%\Programs\Coopen\Coopen²¥·ÅÆ÷.lnk
  • %Program Files%\Coopen\uninst.exe
  • %User Startup%\Coopen²¥·ÅÆ÷.lnk
  • %Desktop%\Coopen.lnk
  • %Program Files%\Coopen\conf\MainParams
  • %Program Files%\Coopen\Templete\Default.tpl
  • %Program Files%\Coopen\conf\TodayInfo
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper\todaypic\PicList.txt
  • %Program Files%\Coopen\conf\SoftLatestVersion.ini
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper\todaypic\13169638236.jpg
  • %Program Files%\Coopen\image\CoopenWallpaper.bmp
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper\todaypic\13163557606.xml
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper\todaypic\13169638286.jpg
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper\todaypic\13163557666.xml
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper\todaypic\13169638336.jpg
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper\todaypic\13163557726.xml
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper\todaypic\13169638376.jpg
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper\todaypic\13163557776.xml
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper\todaypic\925.jpg
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper\todaypic\p-100003-1205.xml
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper\todaypic\13169638426.jpg
  • %System%\SET4.tmp
  • %System%\SET6.tmp
  • %System%\SET8.tmp
  • %System%\SETA.tmp
  • %System%\SETC.tmp
  • %System%\SETE.tmp
  • %Program Files%\Coopen\conf\Coopen.inf
  • %System%\Coopen.scr
  • %Program Files%\Coopen\conf\ModeAChannelList.txt.bak
  • %System%\SET5.tmp
  • %System%\SET7.tmp
  • %System%\SET9.tmp
  • %System%\SETB.tmp
  • %System%\SETD.tmp
  • %System%\SETF.tmp

Step 6

Search and delete these folders

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.
  • %System Root%\DOCUME~1
  • %System Root%\DOCUME~1\ADMINI~1
  • %User Profile%\LOCALS~1
  • %User Temp%\nsm3.tmp
  • %Program Files%\Coopen
  • %Program Files%\Coopen\conf
  • %Program Files%\Coopen\Templete
  • %Program Files%\Coopen\Resource
  • %Program Files%\Coopen\Resource\SkinFormal
  • %Program Files%\Coopen\image
  • %Program Files%\Coopen\image\Wallpaper
  • %Program Files%\Coopen\image\Wallpaper\local wallpaper
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper
  • %Program Files%\Coopen\image\Photo
  • %Program Files%\Coopen\image\Photo\local Photo
  • %System Root%\Documents and Settings\Administrator
  • %Start Menu%\Programs\Coopen
  • %Program Files%\Coopen\image\Wallpaper\local wallpaper\temp
  • %Program Files%\Coopen\image\Wallpaper\coopen wallpaper\todaypic
  • %Program Files%\Coopen\image\AD

Step 7

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

Step 8

Restore deleted/modified files and/or registry entries from backup

*Note: Only Microsoft-related files/keys/values will be restored. If this malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.

    • %Application Data%\GDIPFONTCACHEV1.DAT

Step 9

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%\nsg1.tmp
  • %User Temp%\nsm3.tmp
  • %Windows%\fonts\msgothic.ttf
  • %Windows%\fonts\msuigoth.ttf
  • %Windows%\fonts\MSMINCHO.TTF
  • %Windows%\fonts\Gulim.ttf
  • %Windows%\fonts\Gulimche.ttf
  • %Windows%\fonts\Dotum.ttf
  • %Windows%\fonts\Batang.ttf
  • %Windows%\fonts\Gungsuh.ttf
  • %Windows%\fonts\Simsun.ttf
  • %Windows%\fonts\nsimsun.ttf
  • %Windows%\fonts\MingLiU.ttf
  • %Windows%\fonts\pmingliu.ttf
  • %System%\SET5.tmp
  • %System%\kbd101b.dll
  • %System%\SET7.tmp
  • %System%\kbd101c.dll
  • %System%\SET9.tmp
  • %System%\kbd103.dll
  • %System%\SETB.tmp
  • %System%\kbd106.dll
  • %System%\SETD.tmp
  • %System%\kbdjpn.dll
  • %System%\SETF.tmp
  • %System%\kbdkor.dll


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