Infection sur le navigateur, help !

Bonjour,
Voilà comme mon PC était plus lent que d'habitude et que j'avais un problème au niveau de ma navigation internet. En effet, des pages "pornos" s'affichaient chaque fois que je cliquais un lien étant affiché par une recherche Google. J'ai suivi le programme de désinfection que propose ce site, et je poste mes trois reports:

Rapport AVG Anti-Spyware:

---------------------------------------------------------
AVG Anti-Spyware - Rapport d'analyse
---------------------------------------------------------

+ Créé à: 19:54:54 09/11/2007

+ Résultat de l'analyse:

C:\Documents and Settings\LocalService\Cookies\system@weborama[1].txt -> TrackingCookie.Weborama : Nettoyé.
C:\WINDOWS\system32\drivers\etc\hosts -> Trojan.Bambo.Hosts.A : Nettoyé et sauvegardé (mise en quarantaine).

Fin du rapport

Rapport Bitdefender:

BitDefender Online Scanner - Real Time Virus Report

Generated at: Fri, Nov 09, 2007 - 21:34:04

Scan Info

Scanned Files

189069

Infected Files

5

Virus Detected

Trojan.DNSChanger.QT

1

BehavesLike:Win32.ExplorerHijack

2

Generic.Adw.SaveNow.56AD4696

2

This summary of the scan process will be used by the BitDefender Antivirus Lab to create agregate statistics about virus activity around the world.

Rapport Hijackthis:

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 21:40:28, on 09/11/2007
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\svchost.exe
C:\windows\system32\svchost.exe
C:\windows\System32\svchost.exe
C:\windows\System32\svchost.exe
C:\windows\System32\svchost.exe
C:\windows\system32\spoolsv.exe
C:\windows\Explorer.EXE
C:\Program Files\Java\jre1.6.0_03\bin\jusched.exe
C:\PROGRA~1\Grisoft\AVG7\avgamsvr.exe
C:\PROGRA~1\Grisoft\AVG7\avgupsvc.exe
C:\PROGRA~1\Grisoft\AVG7\avgemc.exe
C:\Program Files\Fichiers communs\Roxio Shared\SharedCOM8\RoxWatchTray.exe
C:\PROGRA~1\Grisoft\AVG7\avgcc.exe
C:\windows\system32\cisvc.exe
C:\Program Files\Fichiers communs\InstallShield\UpdateService\issch.exe
C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
C:\windows\system32\ctfmon.exe
C:\Program Files\Fichiers communs\Roxio Shared\SharedCOM8\RoxWatch.exe
C:\windows\System32\PAStiSvc.exe
C:\windows\System32\svchost.exe
C:\WINDOWS\System32\MsPMSPSv.exe
C:\windows\System32\alg.exe
C:\Program Files\Fichiers communs\Roxio Shared\SharedCOM8\CPSHelpRunner.exe
C:\Program Files\Fichiers communs\Roxio Shared\SharedCOM8\RoxMediaDB.exe
C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\guard.exe
C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\avgas.exe
C:\windows\system32\cidaemon.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe
C:\WINDOWS\System32\wbem\wmiprvse.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.01net.com/telecharger/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = https://www.01net.com/telecharger/
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.01net.com/telecharger/
R1 - HKLM\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://www.metacrawler.com/crawler?general=%s
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: Yahoo! Toolbar avec bloqueur de fenêtres pop-up - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
F3 - REG:win.ini: load=
O2 - BHO: Yahoo! Toolbar Helper - {02478D38-C3F9-4EFB-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: Aide pour le lien d'Adobe PDF Reader - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Fichiers communs\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_03\bin\ssv.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: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar1.dll
O2 - BHO: Google Toolbar Notifier BHO - {AF69DE43-7D58-4638-B6FA-CE66B5AD205D} - C:\Program Files\Google\GoogleToolbarNotifier\2.0.301.7164\swg.dll
O2 - BHO: (no name) - {CDE8EAB9-CEF3-4885-B12F-26960A25C800} - C:\Program Files\Video ActiveX Access\iesplg.dll (file missing)
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar1.dll
O3 - Toolbar: YouTube Toolbar - {B63D81CF-90DC-4d13-8782-9524A2752039} - C:\Program Files\YouTube Toolbar\DCCFBF5.dll (file missing)
O3 - Toolbar: Yahoo! Toolbar avec bloqueur de fenêtres pop-up - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O4 - HKLM\..\Run: [RoxioEngineUtility] "C:\Program Files\Fichiers communs\Roxio Shared\System\EngUtil.exe"
O4 - HKLM\..\Run: [vspdfprsrv.exe] C:\Program Files\Visage\PDF Printer\vspdfprsrv.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.6.0_03\bin\jusched.exe"
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files\Adobe\Reader 8.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\QTTask.exe" -atboottime
O4 - HKLM\..\Run: [RoxWatchTray] "C:\Program Files\Fichiers communs\Roxio Shared\SharedCOM8\RoxWatchTray.exe"
O4 - HKLM\..\Run: [AVG7_CC] C:\PROGRA~1\Grisoft\AVG7\avgcc.exe /STARTUP
O4 - HKLM\..\Run: [ISUSPM Startup] C:\PROGRA~1\FICHIE~1\INSTAL~1\UPDATE~1\ISUSPM.exe -startup
O4 - HKLM\..\Run: [ISUSScheduler] "C:\Program Files\Fichiers communs\InstallShield\UpdateService\issch.exe" -start
O4 - HKLM\..\Run: [!AVG Anti-Spyware] "C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\avgas.exe" /minimized
O4 - HKLM\..\Run: [AudioDeck] C:\Program Files\VIAudioi\SBADeck\ADeck.exe 1
O4 - HKLM\..\Run: [BDNewsAgent] C:\PROGRA~1\Softwin\BITDEF~1\bdnagent.exe
O4 - HKLM\..\Run: [BDSwitchAgent] C:\Program Files\Softwin\BitDefender Professional Edition\bdswitch.exe
O4 - HKLM\..\Run: [Adobe Photo Downloader] "C:\Program Files\Adobe\Photoshop Album Edition Découverte\3.2\Apps\apdproxy.exe"
O4 - HKLM\..\Run: [NBKeyScan] "C:\Program Files\Nero\Nero8\Nero BackItUp\NBKeyScan.exe"
O4 - HKLM\..\Run: [MusicStart] C:\Documents and Settings\Alpaslan Bicer\Bureau\musicstart\MusicStart.exe
O4 - HKLM\..\Run: [SeePassword] C:\Program Files\SeePassword\SeePassword.exe
O4 - HKCU\..\Run: [swg] C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
O4 - HKCU\..\Run: [ctfmon.exe] C:\windows\system32\ctfmon.exe
O4 - HKCU\..\Run: [BgMonitor_{79662E04-7C6C-4d9f-84C7-88D8A56B10AA}] "C:\Program Files\Fichiers communs\Nero\Lib\NMBgMonitor.exe"
O4 - HKLM\..\Policies\Explorer\Run: [rare] C:\Program Files\Video ActiveX Access\imsmain.exe
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-19\..\Run: [AVG7_Run] C:\PROGRA~1\Grisoft\AVG7\avgw.exe /RUNONCE (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: AudioDeck.lnk = C:\Program Files\VIA Technologies, Inc\VIA Audio Driver Setup Program\AudioDeck\AudioDeck.exe
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Control Panel present
O6 - HKLM\Software\Policies\Microsoft\Internet Explorer\Control Panel present
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office12\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O9 - Extra button: (no name) - {85d1f590-48f4-11d9-9669-0800200c9a66} - C:\windows\bdoscandel.exe
O9 - Extra 'Tools' menuitem: Uninstall BitDefender Online Scanner v8 - {85d1f590-48f4-11d9-9669-0800200c9a66} - C:\windows\bdoscandel.exe
O9 - Extra button: Run IMVU - {d9288080-1baa-4bc4-9cf8-a92d743db949} - C:\Documents and Settings\Alpaslan Bicer\Menu Démarrer\Programmes\IMVU\Run IMVU.lnk (file missing)
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://download.microsoft.com/download/E/5/6/E5611B10-0D6D-4117-8430-A67417AA88CD/LegitCheckControl.cab
O16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} (YInstStarter Class) - C:\Program Files\Yahoo!\Common\yinsthelper.dll
O16 - DPF: {5D86DDB5-BDF9-441B-9E9E-D4730F4EE499} (BDSCANONLINE Control) - http://download.bitdefender.com/resources/scan8/oscan8.cab
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/...
O17 - HKLM\System\CCS\Services\Tcpip\..\{B8836139-2525-4C0A-8368-F5ECF49D4FDC}: NameServer = 85.255.116.172,85.255.112.142
O17 - HKLM\System\CCS\Services\Tcpip\..\{EEDE39BE-3946-493A-AB51-7335EB27EDB0}: NameServer = 85.255.116.172,85.255.112.142
O17 - HKLM\System\CS1\Services\Tcpip\Parameters: NameServer = 85.255.116.172 85.255.112.142
O17 - HKLM\System\CS1\Services\Tcpip\..\{B8836139-2525-4C0A-8368-F5ECF49D4FDC}: NameServer = 85.255.116.172,85.255.112.142
O17 - HKLM\System\CS2\Services\Tcpip\Parameters: NameServer = 85.255.116.172 85.255.112.142
O17 - HKLM\System\CS2\Services\Tcpip\..\{B8836139-2525-4C0A-8368-F5ECF49D4FDC}: NameServer = 85.255.116.172,85.255.112.142
O17 - HKLM\System\CCS\Services\Tcpip\Parameters: NameServer = 85.255.116.172 85.255.112.142
O22 - SharedTaskScheduler: farrandly - {8aa7a4d2-73c7-4fca-bef7-7923e38a3b1c} - C:\WINDOWS\System32\tczij.dll (file missing)
O22 - SharedTaskScheduler: crawley - {8bbe40fd-0416-4c3f-80ea-0c7ad5fb1aab} - C:\WINDOWS\System32\igpfced.dll (file missing)
O23 - Service: AVG Anti-Spyware Guard - GRISOFT s.r.o. - C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\guard.exe
O23 - Service: AVG7 Alert Manager Server (Avg7Alrt) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVG7\avgamsvr.exe
O23 - Service: AVG7 Update Service (Avg7UpdSvc) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVG7\avgupsvc.exe
O23 - Service: AVG E-mail Scanner (AVGEMS) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVG7\avgemc.exe
O23 - Service: Google Updater Service (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Fichiers communs\InstallShield\Driver\1050\Intel 32\IDriverT.exe
O23 - Service: LiveShare P2P Server (RoxLiveShare) - Sonic Solutions - C:\Program Files\Fichiers communs\Roxio Shared\SharedCOM8\RoxLiveShare.exe
O23 - Service: RoxMediaDB - Sonic Solutions - C:\Program Files\Fichiers communs\Roxio Shared\SharedCOM8\RoxMediaDB.exe
O23 - Service: Roxio Hard Drive Watcher (RoxWatch) - Sonic Solutions - C:\Program Files\Fichiers communs\Roxio Shared\SharedCOM8\RoxWatch.exe
O23 - Service: STI Simulator - Unknown owner - C:\windows\System32\PAStiSvc.exe