Trojan generic 73705 et spy.bzub

bonsoir à tous , j'ai besoin d'avis eclairé car j'ai des doutes sur mon pc.
Je suis sous xp pro et internet explorer voici le rapport de bit defender en ligne:

Scanned File
Status

C:\WINDOWS\Downloaded Program Files\CONFLICT.1\UGA6PV_0001_N122M2910NetInstaller.exe
Infected with: Trojan.Generic.73705

C:\WINDOWS\Downloaded Program Files\CONFLICT.1\UGA6PV_0001_N122M2910NetInstaller.exe
Disinfection failed

C:\WINDOWS\Downloaded Program Files\CONFLICT.1\UGA6PV_0001_N122M2910NetInstaller.exe
Deleted

C:\WINDOWS\Downloaded Program Files\UGA6PV_0001_N122M2910NetInstaller.exe
Infected with: Trojan.Generic.73705

C:\WINDOWS\Downloaded Program Files\UGA6PV_0001_N122M2910NetInstaller.exe
Disinfection failed

C:\WINDOWS\Downloaded Program Files\UGA6PV_0001_N122M2910NetInstaller.exe
Deleted

C:\WINDOWS\pack.epk=>(NSIS 2g)=>lzma_solid_nsis0007
Infected with: Trojan.Horse.EM

C:\WINDOWS\pack.epk=>(NSIS 2g)=>lzma_solid_nsis0007
Disinfection failed

C:\WINDOWS\pack.epk=>(NSIS 2g)=>lzma_solid_nsis0007
Deleted

C:\WINDOWS\pack.epk=>(NSIS 2g)
Update failed

C:\WINDOWS\system32\czs_u.1
Infected with: Trojan.Spy.Bzub.NGP

C:\WINDOWS\system32\czs_u.1
Disinfection failed

C:\WINDOWS\system32\czs_u.1
Deleted

C:\WINDOWS\system32\czs_u.dll
Infected with: Trojan.Spy.Bzub.NGP

C:\WINDOWS\system32\czs_u.dll
Disinfection failed

C:\WINDOWS\system32\czs_u.dll
Delete failed

et voici le rapport de hijackthis:

C
et voici celui d'hijackthis:

Logfile of Trend Micro HijackThis v2.0.0 (BETA)
Scan saved at 22:51:50, on 27/12/2007
Platform: Windows XP (WinNT 5.01.2600)
Boot mode: Normal

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\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\System32\ZoneLabs\isafe.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Canon\CAL\CALMAIN.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Program Files\QuickTime\qttask.exe
C:\Program Files\MSN Messenger\msnmsgr.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\Program Files\Ahead\Nero Toolkit\DriveSpeed.exe
D:\HiJackThis_v2.exe
C:\WINDOWS\system32\NOTEPAD.EXE

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = https://actus.sfr.fr
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = https://actus.sfr.fr
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.google.fr/?gws_rd=ssl
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = https://actus.sfr.fr
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = https://actus.sfr.fr
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: (no name) - {002C2B4F-77E0-41F9-B6A0-E79F6A505C07} - C:\WINDOWS\System32\czs_u.dll
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: EWPBrowseObject Class - {68F9551E-0411-48E4-9AAF-4BC42A6A46BE} - C:\Program Files\Canon\Easy-WebPrint\EWPBrowseLoader.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.5.0_11\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
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: Easy-WebPrint - {327C2873-E90D-4c37-AA9D-10AC9BABA46C} - C:\Program Files\Canon\Easy-WebPrint\Toolband.dll
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [Zone Labs Client] "C:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe"
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKCU\..\Run: [msnmsgr] "C:\Program Files\MSN Messenger\msnmsgr.exe" /background
O4 - HKCU\..\Run: [NBJ] "C:\Program Files\Ahead\Nero BackItUp\NBJ.exe"
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')
O8 - Extra context menu item: Easy-WebPrint Ajouter à la liste d'impressions - res://C:\Program Files\Canon\Easy-WebPrint\Toolband.dll/RC_AddToList.html
O8 - Extra context menu item: Easy-WebPrint Impression rapide - res://C:\Program Files\Canon\Easy-WebPrint\Toolband.dll/RC_HSPrint.html
O8 - Extra context menu item: Easy-WebPrint Imprimer - res://C:\Program Files\Canon\Easy-WebPrint\Toolband.dll/RC_Print.html
O8 - Extra context menu item: Easy-WebPrint Prévisualiser - res://C:\Program Files\Canon\Easy-WebPrint\Toolband.dll/RC_Preview.html
O10 - Unknown file in Winsock LSP: c:\windows\system32\nwprovau.dll
O16 - DPF: {321F38B6-7E5F-470E-B58C-927523B7AF92} - http://es6-scripts.dlv4.com/binaries/egaccess4/egaccess4_1069_em_XP.cab
O16 - DPF: {67DABFBF-D0AB-41FA-9C46-CC0F21721616} - http://download.divx.com/player/DivXBrowserPlugin.cab
O16 - DPF: {AA59202C-5E41-48FC-AF7D-324F5FD6A9F1} - http://es6-scripts.dlv4.com/binaries/egaccess4/egaccess4_1070_em_XP.cab
O16 - DPF: {B38870E4-7ECB-40DA-8C6A-595F0A5519FF} (MsnMessengerSetupDownloadControl Class) - http://messenger.msn.com/download/MsnMessengerSetupDownloader.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{DC34E5F3-3D0F-4E25-83A8-8BA8EBDDD33C}: NameServer = 192.168.1.1
O17 - HKLM\System\CS2\Services\Tcpip\..\{DC34E5F3-3D0F-4E25-83A8-8BA8EBDDD33C}: NameServer = 192.168.1.1
O17 - HKLM\System\CS3\Services\Tcpip\..\{DC34E5F3-3D0F-4E25-83A8-8BA8EBDDD33C}: NameServer = 192.168.1.1
O22 - SharedTaskScheduler: Pré-chargeur Browseui - {438755C2-A8BA-11D1-B96B-00A0C90312E1} - C:\WINDOWS\System32\browseui.dll
O22 - SharedTaskScheduler: Démon de cache des catégories de composant - {8C7461EF-2B13-11d2-BE35-3078302C2030} - C:\WINDOWS\System32\browseui.dll
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: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.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: CA ISafe (CAISafe) - Computer Associates International, Inc. - C:\WINDOWS\System32\ZoneLabs\isafe.exe
O23 - Service: Canon Camera Access Library 8 (CCALib8) - Canon Inc. - C:\Program Files\Canon\CAL\CALMAIN.exe
O23 - Service: Service d'administration du Gestionnaire de disque logique (dmadmin) - Unknown owner - C:\WINDOWS\System32\dmadmin.exe
O23 - Service: Journal des événements (Eventlog) - Unknown owner - C:\WINDOWS\system32\services.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Fichiers communs\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: Service COM de gravage de CD IMAPI (ImapiService) - Unknown owner - C:\WINDOWS\System32\imapi.exe
O23 - Service: Partage de Bureau à distance NetMeeting (mnmsrvc) - Unknown owner - C:\WINDOWS\System32\mnmsrvc.exe
O23 - Service: DDE réseau (NetDDE) - Unknown owner - C:\WINDOWS\system32\netdde.exe
O23 - Service: DSDM DDE réseau (NetDDEdsdm) - Unknown owner - C:\WINDOWS\system32\netdde.exe
O23 - Service: Plug-and-Play (PlugPlay) - Unknown owner - C:\WINDOWS\system32\services.exe
O23 - Service: Gestionnaire de session d'aide sur le Bureau à distance (RDSessMgr) - Unknown owner - C:\WINDOWS\system32\sessmgr.exe
O23 - Service: Prise en charge des cartes à puces (SCardDrv) - Unknown owner - C:\WINDOWS\System32\SCardSvr.exe
O23 - Service: Carte à puce (SCardSvr) - Unknown owner - C:\WINDOWS\System32\SCardSvr.exe
O23 - Service: Journaux et alertes de performance (SysmonLog) - Unknown owner - C:\WINDOWS\system32\smlogsvc.exe
O23 - Service: Telnet (TlntSvr) - Unknown owner - C:\WINDOWS\System32\tlntsvr.exe
O23 - Service: TrueVector Internet Monitor (vsmon) - Zone Labs, LLC - C:\WINDOWS\system32\ZoneLabs\vsmon.exe
O23 - Service: Cliché instantané de volume (VSS) - Unknown owner - C:\WINDOWS\System32\vssvc.exe
O23 - Service: Carte de performance WMI (WmiApSrv) - Unknown owner - C:\WINDOWS\System32\wbem\wmiapsrv.exe