Home Malware Programs Downloaders QQHelper

QQHelper

Posted: November 11, 2008

QQHelper is an irritating downloader Trojan. A downloader Trojan can download and install other malware. QQHelper downloads without your permission but is easily detected as it appears as a toolbar on your web browser. The toolbar is used and geared for those users who speak the Korean language and who wish to perform searches on Korean web pages.

QQHelper may install on your PC when visiting malware-infected websites. You should delete and remove QQHelper IMMEDIATELY because the online threats brought by this Trojan downloader may cause severe problems with the functionality of your PC.

File System Modifications

  • The following files were created in the system:
    # File Name
    1 fy.exe

Registry Modifications

  • The following newly produced Registry Values are:
    HKEY..\..\..\..{Subkeys}HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\{03465FF5-00AE-411A-9C34-960ED566EC03}HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\{6CFD436C-7AAD-4E50-992F-C0C87A94CAD2}HKEY_LOCAL_MACHINE\SOFTWARE\03D0C547-EBAD-43d9-8B57-DE16E7A93B52HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Toolbar@^{03465FF5-00AE-411a-9C34-960ED566EC03}HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{6CFD436C-7AAD-4e50-992F-C0C87A94CAD2},HKEY..\..\..\..{RegistryKeys}HKEY_CLASSES_ROOT\6781.TOOLBARHKEY_CLASSES_ROOT\6781.TOOLBAR.1HKEY_CLASSES_ROOT\6781.TOOLBARLOADERHKEY_CLASSES_ROOT\6781.TOOLBARLOADER.1HKEY_CLASSES_ROOT\CLSID\{03465FF5-00AE-411a-9C34-960ED566EC03}HKEY_CLASSES_ROOT\CLSID\{6CFD436C-7AAD-4e50-992F-C0C87A94CAD2}HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BUZORHKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Eventlog\Application\BUZORHKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\IndtryHKEY_LOCAL_MACHINE\system\currentcontrolset\enum\root\legacy_dnstransactionHKEY_LOCAL_MACHINE\system\currentcontrolset\enum\root\legacy_dnstransaction nextinstanceHKEY_LOCAL_MACHINE\system\currentcontrolset\enum\root\legacy_dnstransaction\0000 classHKEY_LOCAL_MACHINE\system\currentcontrolset\enum\root\legacy_dnstransaction\0000 classguidHKEY_LOCAL_MACHINE\system\currentcontrolset\enum\root\legacy_dnstransaction\0000 configflagsHKEY_LOCAL_MACHINE\system\currentcontrolset\enum\root\legacy_dnstransaction\0000 devicedescHKEY_LOCAL_MACHINE\system\currentcontrolset\enum\root\legacy_dnstransaction\0000 legacyHKEY_LOCAL_MACHINE\system\currentcontrolset\enum\root\legacy_dnstransaction\0000 serviceHKEY_LOCAL_MACHINE\system\currentcontrolset\enum\root\legacy_dnstransaction\0000\control *newlycreated*HKEY_LOCAL_MACHINE\system\currentcontrolset\enum\root\legacy_dnstransaction\0000\control activeserviceHKEY_LOCAL_MACHINE\system\currentcontrolset\services\dnstransactionHKEY_LOCAL_MACHINE\system\currentcontrolset\services\dnstransaction descriptionHKEY_LOCAL_MACHINE\system\currentcontrolset\services\dnstransaction displaynameHKEY_LOCAL_MACHINE\system\currentcontrolset\services\dnstransaction errorcontrolHKEY_LOCAL_MACHINE\system\currentcontrolset\services\dnstransaction imagepathHKEY_LOCAL_MACHINE\system\currentcontrolset\services\dnstransaction objectnameHKEY_LOCAL_MACHINE\system\currentcontrolset\services\dnstransaction startHKEY_LOCAL_MACHINE\system\currentcontrolset\services\dnstransaction typeHKEY_LOCAL_MACHINE\system\currentcontrolset\services\dnstransaction\enum 0HKEY_LOCAL_MACHINE\system\currentcontrolset\services\dnstransaction\enum countHKEY_LOCAL_MACHINE\system\currentcontrolset\services\dnstransaction\enum nextinstanceHKEY_LOCAL_MACHINE\system\currentcontrolset\services\dnstransaction\security security
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