The following instructions have been created to help you to get rid of "CnsMin" manually.
Use this guide at your own risk; software should usually be better suited to remove malware, since it is able to look deeper.

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Threat Details:

Categories:
  • hijacker

Description:
Parts of this are optional for intallation along with YiSou Toolbar but other parts - which are not mentioned prior to installation - are getting downloaded , installed and executed without any explicit user consent nor notification.
The program also adds itself to system startup. After uninstalling YiSou Toolbar CnsMin still remains on system.
Links (be careful!):
Website: http://www.3721.com/
Removal Instructions:

Autorun:

Please use Spybot-S&D, RunAlyzer or msconfig.exe to remove the following autorun entries.
  • Entries named "helper.dll".
  • Entries named "assistse".

Installed Software List:

You can try to uninstall products with the names listed below; for items identified by other properties or to avoid malware getting active again on uninstallation, use Spybot-S&D or RunAlyzer to locate and get rid of these entries.
  • Products that have a key or property named "{1B0E7716-898E-48cc-9690-4E338E8DE1D3}".

Files:

Please use Windows Explorer or another file manager of your choice to locate and delete these files.
  • The file at "<$PROGRAMFILES>\3721\AutoLive.dll".
  • The file at "<$PROGRAMFILES>\3721\cns01.dat".
  • The file at "<$PROGRAMFILES>\3721\Helper.dll".
  • The file at "<$PROGRAMFILES>\3721\Assist\asbar.dll".
  • The file at "<$PROGRAMFILES>\3721\Assist\assist.dll".
  • The file at "<$PROGRAMFILES>\3721\alrex.dll".
  • The file at "<$PROGRAMFILES>\3721\autolive.dll".
  • The file at "<$PROGRAMFILES>\3721\helper.dll".
  • The file at "<$WINDIR>\Downloaded Program Files\assis.ico".
  • The file at "<$WINDIR>\Downloaded Program Files\CnsHint.cab".
  • The file at "<$WINDIR>\Downloaded Program Files\cnshint.dll".
  • The file at "<$WINDIR>\Downloaded Program Files\CnsMinAL.cab".
  • The file at "<$WINDIR>\Downloaded Program Files\CnsMinCg.ini".
  • The file at "<$WINDIR>\Downloaded Program Files\CnsMinDT.cab".
  • The file at "<$WINDIR>\Downloaded Program Files\CnsMinDT.dll".
  • The file at "<$WINDIR>\Downloaded Program Files\CnsPlus.cab".
  • The file at "<$WINDIR>\Downloaded Program Files\cnsplus.dll".
  • The file at "<$WINDIR>\Downloaded Program Files\CnsUp.ini".
  • The file at "<$WINDIR>\Downloaded Program Files\keepmain.dll".
  • The file at "<$WINDIR>\Downloaded Program Files\keepmainM.cab".
  • The file at "<$SYSDIR>\cns.dat".
  • The file at "<$WINDIR>\Downloaded Program Files\Cns02.dat".
  • The file at "<$WINDIR>\Downloaded Program Files\CnsInst.dll".
  • The file at "<$PROGRAMFILES>\3721\asnoad.dll".
Make sure you set your file manager to display hidden and system files. If CnsMin uses rootkit technologies, use our RootAlyzer or our Total Commander anti-rootkit plugins.
You will have to use a global search for files without a name specified. Be extra careful, because just the name might not be enough to identify files!

Important: There are more files that cannot be safely described in simple words. Please use Spybot-S&D to remove them.

Folders:

Please use Windows Explorer or another file manager of your choice to locate and delete these folders.
  • The directory at "C:\Program Files\3721".
  • The directory at "<$PROGRAMFILES>\3721".
  • The directory at "<$WINDIR>\Downloaded Program Files\3721".
Make sure you set your file manager to display hidden and system files. If CnsMin uses rootkit technologies, use our RootAlyzer or our Total Commander anti-rootkit plugins.
You will have to use a global search for files without a name specified. Be extra careful, because just the name might not be enough to identify folders!

Registry:

You can use regedit.exe (included in Windows) to locate and delete these registry entries.
  • A key in HKEY_CLASSES_ROOT\ named "Assist.EasyAssist", plus associated values.
  • A key in HKEY_CLASSES_ROOT\ named "Assist.EasyAssist.1", plus associated values.
  • A key in HKEY_CLASSES_ROOT\ named "AutoLive.Live", plus associated values.
  • A key in HKEY_CLASSES_ROOT\ named "AutoLive.Live.1", plus associated values.
  • A key in HKEY_CLASSES_ROOT\ named "CoolBar.CoolBarObj", plus associated values.
  • A key in HKEY_CLASSES_ROOT\ named "CoolBar.CoolBarObj.1", plus associated values.
  • Delete the registry key "{7436DB12-1A7A-4D87-A4E0-713EC9D86050}" at "HKEY_CLASSES_ROOT\Interface\".
  • Delete the registry key "{924F5B3A-7A27-484A-B873-E855C9708667}" at "HKEY_CLASSES_ROOT\Interface\".
  • Delete the registry key "{BE08F6BC-C3E6-4149-BEB1-CB449E1B372E}" at "HKEY_CLASSES_ROOT\Interface\".
  • Delete the registry key "{D4839331-534D-4D0C-875F-D25AF6A10CCC}" at "HKEY_CLASSES_ROOT\TypeLib\".
  • Delete the registry key "{19069804-2CF0-4357-B696-BA6E9AAD99EF}" at "HKEY_CLASSES_ROOT\TypeLib\".
  • Delete the registry key "{4158DB95-DE71-41FF-BEA1-2C3D1C679DF1}" at "HKEY_CLASSES_ROOT\TypeLib\".
  • Delete the registry value "CNSAutoUpdate" at "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\".
  • A key in HKEY_CLASSES_ROOT\ named "ADKiller.ADKillerObj", plus associated values.
  • A key in HKEY_CLASSES_ROOT\ named "ADKiller.ADKillerObj.1", plus associated values.
  • Delete the registry key "{9EB2B422-C9EE-46C4-A471-1E79C7517B1D}" at "HKEY_CLASSES_ROOT\CLSID\".
  • Delete the registry key "{ABEC6103-F6AC-43A3-834F-FB03FBA339A2}" at "HKEY_CLASSES_ROOT\CLSID\".
  • A key in HKEY_CLASSES_ROOT\ named "FFlash.FlashObjectInterface", plus associated values.
  • A key in HKEY_CLASSES_ROOT\ named "FFlash.FlashObjectInterface.1", plus associated values.
  • Delete the registry key "{172862CD-9D35-40E7-BAF2-BA7ECF043B9C}" at "HKEY_CLASSES_ROOT\Interface\".
  • Delete the registry key "{1BB0ABBE-2D95-4847-B9D8-6F90DE3714C1}" at "HKEY_CLASSES_ROOT\Interface\".
  • Delete the registry key "{48E688C8-609F-4B08-944E-3C7FAB99CD08}" at "HKEY_CLASSES_ROOT\Interface\".
  • Delete the registry key "{C3A9F7F8-8862-496A-B8A4-25D4140B7DBC}" at "HKEY_CLASSES_ROOT\Interface\".
  • Delete the registry key "{7354662F-CAA3-448B-BC01-04F55A2DCA35}" at "HKEY_CLASSES_ROOT\TypeLib\".
  • Delete the registry key "{A5ADEAE7-A8B4-4F94-9128-BF8D8DB5E927}" at "HKEY_CLASSES_ROOT\TypeLib\".
  • Delete the registry key "{F97E75A4-0103-4F27-A752-327B600B1130}" at "HKEY_CLASSES_ROOT\TypeLib\".
  • Delete the registry key "{F9AD9D67-EFA8-480E-8291-0163F3960DE7}" at "HKEY_CLASSES_ROOT\TypeLib\".
  • Delete the registry key "{00000000-0000-0001-0001-596BAEDD1289}" at "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Extensions\".
  • Delete the registry key "{59BC54A2-56B3-44a0-93E5-432D58746E26}" at "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Extensions\".
  • Delete the registry key "CnsMinKP" at "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\".
If CnsMin uses rootkit technologies, use our RegAlyzer, RootAlyzer or our Total Commander anti-rootkit plugins.

Browser:

The following browser plugins or items can either be removed directly in your browser, or through the help of e.g. Spybot-S&D or RunAlyzer.
  • Please check your bookmarks for links to "3721.com".

Final Words:

If neither Spybot-S&D nor self help did resolve the issue or you would prefer one on one help,
  1. Please read these instructions before requesting assistance,
  2. Then start your own thread in the Malware Removal Forum where a volunteer analyst will advise you as soon as available.