Detournement de page d'accueil sur mon pc

Bonjour,

Lorsque je lance Internet j'ai d'autres pages qui se lancent.

voici le log hijackthis que j'obtiens après un scan :
Logfile of HijackThis v1.99.1
Scan saved at 14:42:07, on 04/12/2005
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\PROGRA~1\Grisoft\AVGFRE~1\avgamsvr.exe
C:\PROGRA~1\Grisoft\AVGFRE~1\avgupsvc.exe
C:\Program Files\Fichiers communs\Symantec Shared\ccSetMgr.exe
C:\Program Files\Fichiers communs\Microsoft Shared\VS7Debug\mdm.exe
C:\Program Files\Norton Internet Security\Norton AntiVirus\navapsvc.exe
C:\Program Files\Synaptics\SynTP\SynTPLpr.exe
C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
C:\WINDOWS\SOUNDMAN.EXE
C:\Program Files\QuickTime\qttask.exe
C:\Program Files\AdStatus Service\AdStatServ.exe
C:\Program Files\Java\jre1.5.0_01\bin\jusched.exe
C:\Program Files\iTunes\iTunesHelper.exe
C:\Program Files\Softwin\BitDefender Free Edition\bdmcon.exe
C:\PROGRA~1\Grisoft\AVGFRE~1\avgcc.exe
C:\PROGRA~1\Grisoft\AVGFRE~1\avgemc.exe
C:\Program Files\Fichiers communs\Symantec Shared\ccApp.exe
C:\Program Files\MessengerPlus! 3\MsgPlus.exe
C:\WINDOWS\system32\kefh5em2.exe
C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe
C:\WINDOWS\System32\nvsvc32.exe
C:\WINDOWS\system32\slserv.exe
C:\WINDOWS\system32\ctfmon.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Internet Explorer\iexplore.exe
c:\progra~1\intern~1\iexplore.exe
C:\WINDOWS\wanmpsvc.exe
C:\Program Files\Fichiers communs\Softwin\BitDefender Communicator\xcommsvr.exe
C:\Program Files\Fichiers communs\Symantec Shared\ccEvtMgr.exe
C:\Program Files\Fichiers communs\Symantec Shared\Security Center\SymWSC.exe
C:\Program Files\Fichiers communs\Softwin\BitDefender Scan Server\bdss.exe
C:\Program Files\iPod\bin\iPodService.exe
C:\program files\internet explorer\iexplore.exe
C:\Program Files\Windows Media Connect 2\wmccfg.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Documents and Settings\MOHAMED\Mes documents\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.neuf.fr
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://www.buxuexprmibujzq.com/YQffFxnJDW/wnvMZtIgwG8Eha5tTF5R6s9qSl27jQRrW9UavGunX790pkoeRh6YA.html
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.neuf.fr/
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: (no name) - _{CFBFAE00-17A6-11D0-99CB-00C04FD64497} - (no file)
O2 - BHO: Yahoo! Companion BHO - {02478D38-C3F9-4efb-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn0\ycomp5_5_7_1.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: Search Relevancy - {1D7E3B41-23CE-469B-BE1B-A64B877923E1} - C:\PROGRA~1\SEARCH~1\SEARCH~2.DLL (file missing)
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: wb - {55BE9F0D-6CAF-4c3e-B125-5A13A8C9D0EC} - C:\WINDOWS\system32\nsf5E7.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: IRiras Class - {95C60327-8E17-44D6-98EB-7EB70CC606DD} - C:\WINDOWS\system32\iraswiai.dll
O2 - BHO: ohb - {9ADE0443-2AB2-4B23-A3F8-AC520773DE12} - C:\WINDOWS\system32\nscDA.dll
O2 - BHO: (no name) - {9D266E94-0B29-7FB2-573E-474BAFB33137} - C:\DOCUME~1\MOHAMED\APPLIC~1\MEMOCA~1\Spam1.exe
O2 - BHO: CNisExtBho Class - {9ECB9560-04F9-4bbc-943D-298DDF1699E1} - C:\Program Files\Fichiers communs\Symantec Shared\AdBlocking\NISShExt.dll
O2 - BHO: MSNToolBandBHO - {BDBD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Program Files\MSN Apps\MSN Toolbar\01.02.4000.1001\fr\msntb.dll
O2 - BHO: CNavExtBho Class - {BDF3E430-B101-42AD-A544-FADC6B084872} - C:\Program Files\Norton Internet Security\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: Web assistant - {0B53EAC3-8D69-4b9e-9B19-A37C9A5676A7} - C:\Program Files\Fichiers communs\Symantec Shared\AdBlocking\NISShExt.dll
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - C:\Program Files\Norton Internet Security\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: MSN - {BDAD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Program Files\MSN Apps\MSN Toolbar\01.02.4000.1001\fr\msntb.dll
O3 - Toolbar: Yahoo! Companion - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn0\ycomp5_5_7_1.dll
O4 - HKLM\..\Run: [SynTPLpr] C:\Program Files\Synaptics\SynTP\SynTPLpr.exe
O4 - HKLM\..\Run: [SynTPEnh] C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\System32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [UpdateManager] "c:\Program Files\Fichiers communs\Sonic\Update Manager\sgtray.exe" /r
O4 - HKLM\..\Run: [PinnacleDriverCheck] C:\WINDOWS\System32\PSDrvCheck.exe -CheckReg
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [NvCplScan] winasp.exe
O4 - HKLM\..\Run: [salm] c:\temp\salm.exe
O4 - HKLM\..\Run: [jjCXEf] C:\WINDOWS\qxfufxf.exe
O4 - HKLM\..\Run: [AdStatus Service] C:\Program Files\AdStatus Service\AdStatServ.exe
O4 - HKLM\..\Run: [Microsofts MediaScope] winmedplay.exe
O4 - HKLM\..\Run: [Symantec NetDriver Monitor] C:\PROGRA~1\SYMNET~1\SNDMon.exe
O4 - HKLM\..\Run: [¢‰¸u0–4C
}ïÁzî[8C:\Program Files\ISTsvc\istsvc.exe] C:\WINDOWS\qxfufxf.exe
O4 - HKLM\..\Run: [¢‰¸u0–4C
}ïÁzîžigÝC:\Program Files\ISTsvc\istsvc.exe] C:\WINDOWS\qxfufxf.exe
O4 - HKLM\..\Run: [¢‰¸u0Ô@ÔÁß]­ú"ü‰üžiC:\Program Files\ISTsvc\istsvc.exe] C:\WINDOWS\qxfufxf.exe
O4 - HKLM\..\Run: [¢‰¸K0¨4W
}ïÁzî[8C:\Program Files\ISTsvc\istsvc.exe] C:\WINDOWS\qxfufxf.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\jre1.5.0_01\bin\jusched.exe
O4 - HKLM\..\Run: [Windows AdStatus] C:\Program Files\Windows AdStatus\WinStat.exe
O4 - HKLM\..\Run: [¢‰¸K0Ô@ÔÁß]§ú"ü‰üžiC:\Program Files\ISTsvc\istsvc.exe] C:\WINDOWS\qxfufxf.exe
O4 - HKLM\..\Run: [¢‰¸K0Ô@ÔÁß]§ú"ü‰Ä_ÜC:\Program Files\ISTsvc\istsvc.exe] C:\WINDOWS\qxfufxf.exe
O4 - HKLM\..\Run: [¢‰¸K09¿Ì*ú]Mú*ÀaîžaC:\Program Files\ISTsvc\istsvc.exe] C:\WINDOWS\qxfufxf.exe
O4 - HKLM\..\Run: [¢‰¸K09¿Ì*ú*ÀaîžaaøYC:\Program Files\ISTsvc\istsvc.exe] C:\WINDOWS\qxfufxf.exe
O4 - HKLM\..\Run: [¢‰¸K09¿Ì*ÀaîžaaøY§C:\Program Files\ISTsvc\istsvc.exe] C:\WINDOWS\qxfufxf.exe
O4 - HKLM\..\Run: [-
] C:\WINDOWS\qxfufxf.exe
O4 - HKLM\..\Run: [iTunesHelper] C:\Program Files\iTunes\iTunesHelper.exe
O4 - HKLM\..\Run: [BDMCon] C:\Program Files\Softwin\BitDefender Free Edition\\bdmcon.exe
O4 - HKLM\..\Run: [BDNewsAgent] C:\Program Files\Softwin\BitDefender Free Edition\\bdnagent.exe
O4 - HKLM\..\Run: [AVG7_CC] C:\PROGRA~1\Grisoft\AVGFRE~1\avgcc.exe /STARTUP
O4 - HKLM\..\Run: [AVG7_EMC] C:\PROGRA~1\Grisoft\AVGFRE~1\avgemc.exe
O4 - HKLM\..\Run: [URLLSTCK.exe] C:\Program Files\Norton Internet Security\UrlLstCk.exe
O4 - HKLM\..\Run: [ccApp] "C:\Program Files\Fichiers communs\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [NAV CfgWiz] C:\Program Files\Fichiers communs\Symantec Shared\CfgWiz.exe /GUID NAV /CMDLINE "REBOOT"
O4 - HKLM\..\Run: [MessengerPlus3] "C:\Program Files\MessengerPlus! 3\MsgPlus.exe"
O4 - HKLM\..\Run: [kefh5em2] C:\WINDOWS\system32\kefh5em2.exe
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [idleknobrectbody] C:\Documents and Settings\All Users\Application Data\encsignidleknob\WMAPOLL.exe
O4 - HKLM\..\RunServices: [NvCplScan] winasp.exe
O4 - HKLM\..\RunServices: [Microsofts MediaScope] winmedplay.exe
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [NvCplScan] winasp.exe
O4 - HKCU\..\Run: [Enc axis] C:\DOCUME~1\MOHAMED\APPLIC~1\BAITFI~1\proxy second.exe
O4 - HKCU\..\Run: [irassync] C:\WINDOWS\system32\irasyncd.exe
O4 - Global Startup: Adobe Gamma Loader.lnk = C:\Program Files\Fichiers communs\Adobe\Calibration\Adobe Gamma Loader.exe
O9 - Extra button: Real.com - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - C:\WINDOWS\System32\Shdocvw.dll
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: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://go.microsoft.com/fwlink/?linkid=39204
O17 - HKLM\System\CCS\Services\Tcpip\..\{2B0C7350-8347-43B9-A97E-89DD7AE3EA31}: NameServer = 80.118.196.40 80.118.192.110
O17 - HKLM\System\CS1\Services\Tcpip\..\{2B0C7350-8347-43B9-A97E-89DD7AE3EA31}: NameServer = 80.118.196.40 80.118.192.110
O23 - Service: AVG7 Alert Manager Server (Avg7Alrt) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVGFRE~1\avgamsvr.exe
O23 - Service: AVG7 Update Service (Avg7UpdSvc) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVGFRE~1\avgupsvc.exe
O23 - Service: BitDefender Scan Server (bdss) - Unknown owner - C:\Program Files\Fichiers communs\Softwin\BitDefender Scan Server\bdss.exe" /service (file missing)
O23 - Service: Symantec Event Manager (ccEvtMgr) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\ccEvtMgr.exe
O23 - Service: Symantec Network Proxy (ccProxy) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\ccProxy.exe
O23 - Service: Symantec Password Validation (ccPwdSvc) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\ccPwdSvc.exe
O23 - Service: Symantec Settings Manager (ccSetMgr) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\ccSetMgr.exe
O23 - Service: iPod Service (iPodService) - Apple Computer, Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: MySqlInventime - Unknown owner - c:\mysql\bin\mysqld-max-nt.exe (file missing)
O23 - Service: Service Norton AntiVirus Auto-Protect (navapsvc) - Symantec Corporation - C:\Program Files\Norton Internet Security\Norton AntiVirus\navapsvc.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\System32\nvsvc32.exe
O23 - Service: SAVScan - Symantec Corporation - C:\Program Files\Norton Internet Security\Norton AntiVirus\SAVScan.exe
O23 - Service: SmartLinkService (SLService) - - C:\WINDOWS\SYSTEM32\slserv.exe
O23 - Service: Symantec Network Drivers Service (SNDSrvc) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\SNDSrvc.exe
O23 - Service: SymWMI Service (SymWSC) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\Security Center\SymWSC.exe
O23 - Service: WAN Miniport (ATW) Service (WANMiniportService) - America Online, Inc. - C:\WINDOWS\wanmpsvc.exe
O23 - Service: BitDefender Communicator (XCOMM) - Unknown owner - C:\Program Files\Fichiers communs\Softwin\BitDefender Communicator\xcommsvr.exe" /service (file missing)