Trojan "Eventlog" et Backdoor "Backdoor.win32.bifrose.d"

Bonjour,

Le scan en ligne du site de Pestpatrol m'indique des choses apparemment suspectes que je n'arrive pas à supprimer : Trojan "Eventlog" et Backdoor "Backdoor.win32.bifrose.d" entre autres.

Voici mon log Hijackthis :

Logfile of HijackThis v1.99.1
Scan saved at 20:16:25, on 20/09/2005
Platform: Windows XP (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 (6.00.2600.0000)

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:\Program Files\Fichiers communs\Symantec Shared\ccSetMgr.exe
C:\Program Files\Fichiers communs\Symantec Shared\ccEvtMgr.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\System32\alg.exe
E:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
E:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\System32\DRIVERS\CDANTSRV.EXE
e:\PROGRA~1\DIRECT~1\DUService.exe
C:\WINDOWS\System32\GEARSEC.EXE
D:\Program Files\Norton AntiVirus\navapsvc.exe
D:\Program Files\Norton AntiVirus\AdvTools\NPROTECT.EXE
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Webroot\Spy Sweeper\WRSSSDK.exe
C:\WINDOWS\System32\wdfmgr.exe
C:\WINDOWS\system32\ZONELABS\vsmon.exe
C:\Program Files\ADSL Autoconnect\ADSL Autoconnect.exe
E:\Program Files\Alwil Software\Avast4\ashWebSv.exe
D:\Program Files\Norton AntiVirus\SAVScan.exe
E:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\System32\devldr32.exe
E:\PROGRA~1\WINDOW~1\WScheduler.exe
C:\PROGRA~1\WANADOO\TaskbarIcon.exe
C:\PROGRA~1\WANADOO\CnxMon.exe
E:\Program Files\QuickTime\qttask.exe
C:\PROGRA~1\MESSAG~1\StartMessager.exe
E:\Program Files\iTunes\iTunesHelper.exe
C:\Program Files\Fichiers communs\Symantec Shared\ccApp.exe
C:\Program Files\iPod\bin\iPodService.exe
C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\Program Files\Java\j2re1.4.2_05\bin\jusched.exe
C:\Program Files\ZoneAlarm\zlclient.exe
C:\Program Files\Webroot\Spy Sweeper\SpySweeper.exe
E:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Program Files\ADSL Autoconnect\ADSL Autoconnect.exe
E:\Program Files\Microsoft AntiSpyware\gcasDtServ.exe
E:\Program Files\MesNews\mesnews2.exe
E:\Program Files\Skype\Phone\Skype.exe
C:\Program Files\Internet Explorer\IEXPLORE.EXE
C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe
C:\Program Files\Internet Explorer\IEXPLORE.EXE
C:\Program Files\Internet Explorer\IEXPLORE.EXE
E:\PROGRA~1\DAP\DAP.EXE
D:\@Download\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.fr/
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.fr/
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Wanadoo
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: (no name) - {02DCA195-602B-4B1F-83FF-381B7E804BDB} - C:\WINDOWS\system32\HDBHO.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - E:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: zrwyioblxklimdesadej - {13a0830e-db3b-4e1d-8954-96b81bd3f374} - C:\DOCUME~1\PARENTS\APPLIC~1\aidrdblprn.dll (file missing)
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar1.dll
O2 - BHO: NAV Helper - {BDF3E430-B101-42AD-A544-FADC6B084872} - D:\Program Files\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: llglhdeasss - {11e43eac-09b9-4cbd-b2b9-7888ced67290} - C:\DOCUME~1\PARENTS\APPLIC~1\aidrdblprn.dll (file missing)
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - D:\Program Files\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar1.dll
O4 - HKLM\..\Run: [WScheduler] E:\PROGRA~1\WINDOW~1\WScheduler.exe /LOGON
O4 - HKLM\..\Run: [WOOWATCH] C:\PROGRA~1\WANADOO\Watch.exe
O4 - HKLM\..\Run: [WOOTASKBARICON] C:\PROGRA~1\WANADOO\TaskbarIcon.exe
O4 - HKLM\..\Run: [WooCnxMon] C:\PROGRA~1\WANADOO\CnxMon.exe
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [QuickTime Task] "E:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [MessagerStarter Wanadoo] C:\PROGRA~1\MESSAG~1\StartMessager.exe Messager Wanadoo
O4 - HKLM\..\Run: [iTunesHelper] E:\Program Files\iTunes\iTunesHelper.exe
O4 - HKLM\..\Run: [ccApp] "C:\Program Files\Fichiers communs\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [AtiPTA] C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [Advanced Tools Check] D:\PROGRA~1\NORTON~1\AdvTools\ADVCHK.EXE
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\j2re1.4.2_05\bin\jusched.exe
O4 - HKLM\..\Run: [SSC_UserPrompt] C:\Program Files\Fichiers communs\Symantec Shared\Security Center\UsrPrmpt.exe
O4 - HKLM\..\Run: [Symantec NetDriver Monitor] C:\PROGRA~1\SYMNET~1\SNDMon.exe /Consumer
O4 - HKLM\..\Run: [DownloadAccelerator] E:\PROGRA~1\DAP\DAP.EXE /STARTUP
O4 - HKLM\..\Run: [Zone Labs Client] C:\Program Files\ZoneAlarm\zlclient.exe
O4 - HKLM\..\Run: [gcasServ] "E:\Program Files\Microsoft AntiSpyware\gcasServ.exe"
O4 - HKLM\..\Run: [SpySweeper] "C:\Program Files\Webroot\Spy Sweeper\SpySweeper.exe" /startintray
O4 - HKLM\..\Run: [avast!] E:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKCU\..\Run: [SkwatAutoconnect] C:\Program Files\ADSL Autoconnect\ADSL Autoconnect.exe
O4 - HKCU\..\Run: [Norton Antivirus] C:\Program Files\Norton AntiVirus\Navapw32.exe
O4 - Global Startup: Microsoft Office.lnk = E:\Program Files\Microsoft Office\Office10\OSA.EXE
O4 - Global Startup: Adobe Gamma Loader.exe.lnk = C:\Program Files\Fichiers communs\Adobe\Calibration\Adobe Gamma Loader.exe
O4 - Global Startup: Lancement rapide d'Adobe Reader.lnk = E:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O8 - Extra context menu item: &Download with &DAP - E:\PROGRA~1\DAP\dapextie.htm
O8 - Extra context menu item: &Filtrer cette image avec Kapere - res://E:\PROGRA~1\Akretio\Kapere\Kapere.exe/RT_HTML/BANNER_HTML
O8 - Extra context menu item: &Traduire à partir de l'anglais - res://c:\program files\google\GoogleToolbar1.dll/cmwordtrans.html
O8 - Extra context menu item: Download &all with DAP - E:\PROGRA~1\DAP\dapextie2.htm
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://E:\PROGRA~1\MICROS~1\Office10\EXCEL.EXE/3000
O8 - Extra context menu item: Pages liées - res://c:\program files\google\GoogleToolbar1.dll/cmbacklinks.html
O8 - Extra context menu item: Pages similaires - res://c:\program files\google\GoogleToolbar1.dll/cmsimilar.html
O8 - Extra context menu item: Recherche &Google - res://c:\program files\google\GoogleToolbar1.dll/cmsearch.html
O8 - Extra context menu item: Tout &télécharger avec Kapere - res://E:\PROGRA~1\Akretio\Kapere\Kapere.exe/RT_HTML/DOWNALL_HTML
O8 - Extra context menu item: Télécharger avec &Kapere - res://E:\PROGRA~1\Akretio\Kapere\Kapere.exe/RT_HTML/DOWNUSING_HTML
O8 - Extra context menu item: Version de la page actuelle disponible dans le cache Google - res://c:\program files\google\GoogleToolbar1.dll/cmcache.html
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\WINDOWS\System32\msjava.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\WINDOWS\System32\msjava.dll
O9 - Extra button: Yahoo! Messenger - {E5D12C4E-7B4F-11D3-B5C9-0050045C3C96} - E:\PROGRA~1\YAHOO!\MESSEN~1\YPAGER.EXE
O9 - Extra 'Tools' menuitem: Yahoo! Messenger - {E5D12C4E-7B4F-11D3-B5C9-0050045C3C96} - E:\PROGRA~1\YAHOO!\MESSEN~1\YPAGER.EXE
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\MSMSGS.EXE
O9 - Extra 'Tools' menuitem: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\MSMSGS.EXE
O9 - Extra button: Wanadoo - {1462651F-F4BA-4C76-A001-C4284D0FE16E} - http://www.wanadoo.fr (file missing) (HKCU)
O16 - DPF: Interface Chat Voila - http://chat10.x-echo.com/version3/Applet/vchatsign.cab
O16 - DPF: Interface Chat Wanadoo - http://chat14.x-echo.com/version3/Applet/wchatsign.cab
O16 - DPF: JT's Blocks - http://download.games.yahoo.com/games/clients/y/blt1_x....
O16 - DPF: Yahoo! Chat - http://us.chat1.yimg.com/us.yimg.com/i/chat/applet/c381...
O16 - DPF: Yahoo! Pool 2 - http://download.games.yahoo.com/games/clients/y/potc_x....
O16 - DPF: Yahoo! Towers 2.0 - http://download.games.yahoo.com/games/clients/y/ywt0_x....
O16 - DPF: {0246ECA8-996F-11D1-BE2F-00A0C9037DFE} (TDServer Control) - http://fr.encyclopedia.yahoo.com/rsc/tdserver.cab
O16 - DPF: {56393399-041A-4650-94C7-13DFCB1F4665} (PSFormX Control) - http://www.my-etrust.com/Support/PestScanner/pestscan.c...
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - http://a840.g.akamai.net/7/840/537/2003080601/housecall...
O16 - DPF: {917623D1-D8E5-11D2-BE8B-00104B06BDE3} (CamImage Class) - http://81.1.41.137/activex/AxisCamControl.cab
O16 - DPF: {AB29A544-D6B4-4E36-A1F8-D3E34FC7B00A} (WTHoster Class) - http://install.wildtangent.com/bgn/partners/shockwave/b...
O16 - DPF: {B38870E4-7ECB-40DA-8C6A-595F0A5519FF} (MsnMessengerSetupDownloadControl Class) - http://messenger.msn.com/download/msnmessengersetupdown...
O16 - DPF: {CAFEEFAC-0014-0001-0003-ABCDEFFEDCBA} (Environnement d'exécution Java 1.4.1_03) -
O16 - DPF: {DF780F87-FF2B-4DF8-92D0-73DB16A1543A} (PopCapLoader Object) - http://www.shockwave.com/content/zuma/popcaploader_v5.c...
O16 - DPF: {FA13A9FA-CA9B-11D2-9780-00104B242EA3} (WildTangent Control) - http://www.wildtangent.com/install/wdriver/ddc/wildgame...
O17 - HKLM\System\CCS\Services\Tcpip\..\{53F3CEEB-F523-4137-9AB3-057499DD7DDC}: NameServer = 80.10.246.1 80.10.246.132
O23 - Service: ADSLAutoconnect - Unknown owner - C:\Program Files\ADSL Autoconnect\ADSL Autoconnect.exe" -z (file missing)
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - Unknown owner - E:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: Ati HotKey Poller - Unknown owner - C:\WINDOWS\System32\Ati2evxx.exe
O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - Service: avast! Antivirus - Unknown owner - E:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - Unknown owner - E:\Program Files\Alwil Software\Avast4\ashMaiSv.exe" /service (file missing)
O23 - Service: avast! Web Scanner - Unknown owner - E:\Program Files\Alwil Software\Avast4\ashWebSv.exe" /service (file missing)
O23 - Service: C-DillaSrv - C-Dilla Ltd - C:\WINDOWS\System32\DRIVERS\CDANTSRV.EXE
O23 - Service: Symantec Event Manager (ccEvtMgr) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\ccEvtMgr.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: Direct Update (DirectUpdate) - http://www.directupdate.net - e:\PROGRA~1\DIRECT~1\DUService.exe
O23 - Service: GEARSecurity - GEAR Software - C:\WINDOWS\System32\GEARSEC.EXE
O23 - Service: iPod Service (iPodService) - Apple Computer, Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: Service Norton AntiVirus Auto-Protect (navapsvc) - Symantec Corporation - D:\Program Files\Norton AntiVirus\navapsvc.exe
O23 - Service: Norton Unerase Protection (NProtectService) - Symantec Corporation - D:\Program Files\Norton AntiVirus\AdvTools\NPROTECT.EXE
O23 - Service: SAVScan - Symantec Corporation - D:\Program Files\Norton AntiVirus\SAVScan.exe
O23 - Service: ScriptBlocking Service (SBService) - Symantec Corporation - C:\PROGRA~1\FICHIE~1\SYMANT~1\SCRIPT~1\SBServ.exe
O23 - Service: Symantec Network Drivers Service (SNDSrvc) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\SNDSrvc.exe
O23 - Service: Webroot Spy Sweeper Engine (svcWRSSSDK) - Webroot Software, Inc. - C:\Program Files\Webroot\Spy Sweeper\WRSSSDK.exe
O23 - Service: SymWMI Service (SymWSC) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\Security Center\SymWSC.exe
O23 - Service: TrueVector Internet Monitor (vsmon) - Zone Labs, LLC - C:\WINDOWS\system32\ZONELABS\vsmon.exe

Je précise que je n'y connais pas grand-chose et que je ne sais pas supprimer les virus et autres bestioles manuellement... J'ai juste fait plusieurs nettoyages avec avast, norton, spybot, adaware, etc.

J'ai aussi utilisé un programme d'analyse du log Hijackthis, mais je n'y comprends rien et il n'a pas l'air de trouver de problème, alors je ne sais pas quoi faire.

Merci de votre aide.

Pauline