Piratage de navigateur

Bonjour,

Est-ce que quelqu'un peut m'aider avec un problème de piratage de navigateur (sur IE 7) J'essaie de mettre comme page d'accueil une page vierge ou la page d'accueil de différents sites mais je suis toujours dirigé vers un site chinois (je soupçonne mon fils d'aller sur des sites de jeux en ligne). J'ai fait des scans avec Avast et avec Panda et j'ai pu éliminer pas mal de fichiers infectés. Voici le scan de Hijackthis.

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 22:05:42, on 18/12/2005
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16544)
Boot mode: Normal

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\csrss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Lavasoft\Ad-Aware 2007\aawservice.exe
C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\system32\spoolsv.exe
C:\PROGRA~1\FICHIE~1\AOL\ACS\AOLacsd.exe
C:\WINDOWS\QQRun.exe
C:\Program Files\Alcohol Soft\Alcohol 120\StarWind\StarWindService.exe
C:\WINDOWS\system32\wdfmgr.exe
C:\WINDOWS\system32\wscntfy.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Java\j2re1.4.2_03\bin\jusched.exe
C:\WINDOWS\stsystra.exe
C:\Program Files\Dell\Media Experience\DMXLauncher.exe
C:\Program Files\Fichiers communs\InstallShield\UpdateService\issch.exe
C:\WINDOWS\System32\DLA\DLACTRLW.EXE
C:\Program Files\Corel\Corel Photo Album 6\MediaDetect.exe
C:\Program Files\USB Product Driver v2.32r005\shwicon.exe
C:\Program Files\Fichiers communs\AOL\ACS\AOLDial.exe
C:\Program Files\Real\RealPlayer\RealPlay.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Enigma Software Group\SpyHunter\SpyHunter3.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\MSN Messenger\msnmsgr.exe
C:\Program Files\Digital Line Detect\DLG.exe
C:\WINDOWS\system32\wbem\wmiprvse.exe
C:\Program Files\WinAce\WinAce.exe
C:\DOCUME~1\GERARD~1\LOCALS~1\Temp\~AceTemp\HiJackThis\HijackThis.exe
C:\Documents and Settings\GERARD MARTIN\Bureau\HijackThis.exe
C:\WINDOWS\system32\wbem\wmiprvse.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = https://www.dell.com/fr-fr
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://mysearch.myway.com/jsp/dellsidebar.jsp?p=DR
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.xrwz.com/?eg
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = https://www.msn.com/fr-fr/?ocid=iehp
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = https://www.bing.com/?toHttps=1&redig=5FC791212101479BAFBE1A679848B1AF
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = https://www.bing.com/?toHttps=1&redig=5FC791212101479BAFBE1A679848B1AF
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.google.fr/?gws_rd=ssl
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O1 - Hosts: 58.215.65.193 kzxf.net
O1 - Hosts: 58.215.65.193 www.kzxf.net
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: DriveLetterAccess - {5CA3D70E-1895-11CF-8E15-001234567890} - C:\WINDOWS\System32\DLA\DLASHX_W.DLL
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
O2 - BHO: Windows Live Sign-in Helper - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Fichiers communs\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: ST - {9394EDE7-C8B5-483E-8773-474BF36AF6E4} - C:\Program Files\MSN Apps\ST\01.03.0000.1005\en-xu\stmain.dll
O2 - BHO: MSNToolBandBHO - {BDBD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Program Files\MSN Apps\MSN Toolbar\01.02.5000.1021\fr\msntb.dll
O2 - BHO: Windows Messenger Assistant - {C86488AF-13D5-4FEF-9DDF-9FB88698CFC1} - C:\Documents and Settings\All Users\Application Data\Microsoft\OFFICE\USERDATA\webbrowser_7591.dll
O3 - Toolbar: MSN - {BDAD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Program Files\MSN Apps\MSN Toolbar\01.02.5000.1021\fr\msntb.dll
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\j2re1.4.2_03\bin\jusched.exe
O4 - HKLM\..\Run: [SigmatelSysTrayApp] stsystra.exe
O4 - HKLM\..\Run: [ATIPTA] "C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe"
O4 - HKLM\..\Run: [DMXLauncher] C:\Program Files\Dell\Media Experience\DMXLauncher.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [ISUSPM Startup] "C:\Program Files\Fichiers communs\InstallShield\UpdateService\isuspm.exe" -startup
O4 - HKLM\..\Run: [ISUSScheduler] "C:\Program Files\Fichiers communs\InstallShield\UpdateService\issch.exe" -start
O4 - HKLM\..\Run: [DLA] C:\WINDOWS\System32\DLA\DLACTRLW.EXE
O4 - HKLM\..\Run: [DLCFCATS] rundll32 C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\DLCFtime.dll,_RunDLLEntry@16
O4 - HKLM\..\Run: [Corel Photo Downloader] C:\Program Files\Corel\Corel Photo Album 6\MediaDetect.exe
O4 - HKLM\..\Run: [ShowIcon_Module-B_USB Product Driver v2.32r005] "C:\Program Files\USB Product Driver v2.32r005\shwicon.exe" -t"Module-B\USB Product Driver v2.32r005"
O4 - HKLM\..\Run: [AOLDialer] C:\Program Files\Fichiers communs\AOL\ACS\AOLDial.exe
O4 - HKLM\..\Run: [RealTray] C:\Program Files\Real\RealPlayer\RealPlay.exe SYSTEMBOOTHIDEPLAYER
O4 - HKLM\..\Run: [AVPSrv] C:\WINDOWS\AVPSrv.exE
O4 - HKLM\..\Run: [NVDispDrv] C:\WINDOWS\amftol.exe
O4 - HKLM\..\Run: [msccrt] C:\WINDOWS\msccrt.exe
O4 - HKLM\..\Run: [upxdnd] C:\WINDOWS\upxdnd.exe
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [SpyHunter Security Suite] C:\Program Files\Enigma Software Group\SpyHunter\SpyHunter3.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [msnmsgr] "C:\Program Files\MSN Messenger\msnmsgr.exe" /background
O4 - HKLM\..\Policies\Explorer\Run: [MSDWG32] LYLoadbr.exe
O4 - HKLM\..\Policies\Explorer\Run: [MSDCG32 ] LYLeador.exe
O4 - HKLM\..\Policies\Explorer\Run: [MSDOG32] LYLoador.exe
O4 - HKLM\..\Policies\Explorer\Run: [MSDSG32] LYLoadar.exe
O4 - HKLM\..\Policies\Explorer\Run: [MSDHG32] LYLoadhr.exe
O4 - HKLM\..\Policies\Explorer\Run: [MSDQG32] LYLoadqr.exe
O4 - HKLM\..\Policies\Explorer\Run: [q2213k] rundll32 "C:\WINDOWS\Downlo~1\q2213k.dll",start
O4 - HKLM\..\Policies\Explorer\Run: [u0421] rundll32 "C:\WINDOWS\Downlo~1\u0421.dll",Run
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVICE RÉSEAU')
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'Default user')
O4 - Global Startup: Digital Line Detect.lnk = ?
O4 - Global Startup: LG SyncManager.lnk = C:\Documents and Settings\Nicolas Martin\Mes documents\Nicolas\Logiciel Telephone LG U8360\LGSyncManager.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office\OSA9.EXE
O8 - Extra context menu item: &Recherche AOL Toolbar - res://C:\Program Files\AOL Toolbar\toolbar.dll/SEARCH.HTML
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\j2re1.4.2_03\bin\npjpi142_03.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\j2re1.4.2_03\bin\npjpi142_03.dll
O9 - Extra button: Real.com - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - C:\WINDOWS\system32\Shdocvw.dll
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O16 - DPF: {9A9307A0-7DA4-4DAF-B042-5009F29E09E1} (ActiveScan Installer Class) - http://acs.pandasoftware.com/activescan/as5free/asinst.cab
O23 - Service: 2712CDC4 - Unknown owner - C:\WINDOWS\system32\FF39AB8C.EXE (file missing)
O23 - Service: Ad-Aware 2007 Service (aawservice) - Lavasoft AB - C:\Program Files\Lavasoft\Ad-Aware 2007\aawservice.exe
O23 - Service: AOL Connectivity Service (AOL ACS) - America Online, Inc. - C:\PROGRA~1\FICHIE~1\AOL\ACS\AOLacsd.exe
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: avast! Antivirus - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
O23 - Service: avast! Web Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
O23 - Service: BB4DB7E8 - Unknown owner - C:\WINDOWS\system32\1B761F5C.EXE (file missing)
O23 - Service: dlcf_device - Unknown owner - C:\WINDOWS\system32\dlcfcoms.exe (file missing)
O23 - Service: Intel NCS NetService (NetSvc) - Intel(R) Corporation - C:\Program Files\Intel\PROSetWired\NCS\Sync\NetSvc.exe
O23 - Service: QQRun - Unknown owner - C:\WINDOWS\QQRun.exe
O23 - Service: StarWind iSCSI Service (StarWindService) - Rocket Division Software - C:\Program Files\Alcohol Soft\Alcohol 120\StarWind\StarWindService.exe
O23 - Service: Windows Advanced Manager (wamer) - Unknown owner - C:\Program Files\Microsoft Office\SYSTEM\dodolook_7591.exe