Infection : win32.trojan.downloader

bonjour, comme la plupart j'ai eu le droit a un trojan du nom de win32.trojan.downloader.

merci de me donner un coup de main pour l'erradiquer.

voici mon rapport hijack

Logfile of HijackThis v1.99.1
Scan saved at 10:35:05, on 04/08/2006
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\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\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\system32\ishost.exe
C:\WINDOWS\system32\atiptaxx.exe
C:\Program Files\DAEMON Tools\daemon.exe
C:\PROGRA~1\Wanadoo\TaskBarIcon.exe
C:\Program Files\McAfee.com\VSO\mcvsshld.exe
C:\WINDOWS\Mixer.exe
C:\WINDOWS\system32\ismon.exe
C:\PROGRA~1\mcafee.com\vso\mcvsescn.exe
c:\program files\mcafee.com\agent\mcagent.exe
C:\Program Files\McAfee.com\VSO\oasclnt.exe
C:\PROGRA~1\McAfee.com\PERSON~1\MpfTray.exe
C:\PROGRA~1\mcafee.com\mps\mscifapp.exe
C:\PROGRA~1\McAfee\SPAMKI~1\MskAgent.exe
C:\WINDOWS\System32\FTRTSVC.exe
C:\Program Files\outlook\outlook.exe
C:\Program Files\QuickTime\qttask.exe
c:\program files\mcafee.com\agent\mcdetect.exe
C:\Program Files\Fichiers communs\{6C2EBE26-064E-1036-0810-010204090021}\Update.exe
C:\WINDOWS\system32\ctfmon.exe
c:\PROGRA~1\mcafee.com\vso\mcshield.exe
C:\Program Files\Fichiers communs\Ahead\lib\NMBgMonitor.exe
C:\Program Files\Spyware Doctor\swdoctor.exe
C:\Program Files\E-Color\Common\IconMgr.exe
c:\PROGRA~1\mcafee.com\agent\mctskshd.exe
C:\PROGRA~1\Wanadoo\GestionnaireInternet.exe
C:\PROGRA~1\McAfee.com\PERSON~1\MpfService.exe
C:\PROGRA~1\McAfee.com\PERSON~1\MpfAgent.exe
C:\Program Files\E-Color\E-Color Indicator\TICIcon.exe
C:\PROGRA~1\Wanadoo\ComComp.exe
C:\PROGRA~1\Wanadoo\Toaster.exe
C:\PROGRA~1\Wanadoo\Inactivity.exe
C:\PROGRA~1\Wanadoo\PollingModule.exe
C:\WINDOWS\System32\ALERTM~1\ALERTM~1.EXE
C:\PROGRA~1\McAfee\SPAMKI~1\MSKSrvr.exe
C:\WINDOWS\System32\alg.exe
C:\PROGRA~1\Wanadoo\Watch.exe
C:\Program Files\Shareaza\Shareaza.exe
C:\Program Files\Internet Explorer\IEXPLORE.EXE
C:\Documents and Settings\guy\Bureau\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page = C:\WINDOWS\about.htm
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Orange
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: Search Class - {08C06D61-F1F3-4799-86F8-BE1A89362C85} - C:\PROGRA~1\Wanadoo\SEARCH~1.DLL
O3 - Toolbar: McAfee VirusScan - {BA52B914-B692-46c4-B683-905236F6F655} - c:\progra~1\mcafee.com\vso\mcvsshl.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar2.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O4 - HKLM\..\Run: [WOOWATCH] C:\PROGRA~1\Wanadoo\Watch.exe
O4 - HKLM\..\Run: [WOOTASKBARICON] C:\PROGRA~1\Wanadoo\GestMaj.exe TaskBarIcon.exe
O4 - HKLM\..\Run: [AtiPTA] atiptaxx.exe
O4 - HKLM\..\Run: [DAEMON Tools] "C:\Program Files\DAEMON Tools\daemon.exe" -lang 1033
O4 - HKLM\..\Run: [McRegWiz] C:\PROGRA~1\McAfee.com\Agent\mcregwiz.exe /autorun
O4 - HKLM\..\Run: [VSOCheckTask] "C:\PROGRA~1\McAfee.com\VSO\mcmnhdlr.exe" /checktask
O4 - HKLM\..\Run: [VirusScan Online] C:\Program Files\McAfee.com\VSO\mcvsshld.exe
O4 - HKLM\..\Run: [MCAgentExe] c:\PROGRA~1\mcafee.com\agent\mcagent.exe
O4 - HKLM\..\Run: [MCUpdateExe] C:\PROGRA~1\mcafee.com\agent\mcupdate.exe
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [C-Media Mixer] Mixer.exe /startup
O4 - HKLM\..\Run: [OASClnt] C:\Program Files\McAfee.com\VSO\oasclnt.exe
O4 - HKLM\..\Run: [MPFExe] C:\PROGRA~1\McAfee.com\PERSON~1\MpfTray.exe
O4 - HKLM\..\Run: [MPSExe] c:\PROGRA~1\mcafee.com\mps\mscifapp.exe /embedding
O4 - HKLM\..\Run: [MSKAGENTEXE] C:\PROGRA~1\McAfee\SPAMKI~1\MskAgent.exe
O4 - HKLM\..\Run: [MSKDetectorExe] C:\PROGRA~1\McAfee\SPAMKI~1\MSKDetct.exe /startup
O4 - HKLM\..\Run: [outlook] C:\Program Files\outlook\outlook.exe /auto
O4 - HKLM\..\Run: [winlog] winlog.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [a-squared] "C:\Program Files\a-squared Anti-Malware\a2guard.exe"
O4 - HKLM\..\RunServices: [winlog] winlog.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [WOOKIT] C:\PROGRA~1\Wanadoo\Shell.exe appLaunchClientZone.shl|PARAM= cnx
O4 - HKCU\..\Run: [BgMonitor_{79662E04-7C6C-4d9f-84C7-88D8A56B10AA}] "C:\Program Files\Fichiers communs\Ahead\lib\NMBgMonitor.exe"
O4 - HKCU\..\Run: [Spyware Doctor] "C:\Program Files\Spyware Doctor\swdoctor.exe" /Q
O4 - Startup: Adobe Gamma.lnk = C:\Program Files\Fichiers communs\Adobe\Calibration\Adobe Gamma Loader.exe
O4 - Global Startup: E-Color.lnk = C:\Program Files\E-Color\Common\IconMgr.exe
O8 - Extra context menu item: &Google Search - res://c:\program files\google\GoogleToolbar2.dll/cmsearch.html
O8 - Extra context menu item: &Translate English Word - res://c:\program files\google\GoogleToolbar2.dll/cmwordtrans.html
O8 - Extra context menu item: Backward Links - res://c:\program files\google\GoogleToolbar2.dll/cmbacklinks.html
O8 - Extra context menu item: Cached Snapshot of Page - res://c:\program files\google\GoogleToolbar2.dll/cmcache.html
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O8 - Extra context menu item: Similar Pages - res://c:\program files\google\GoogleToolbar2.dll/cmsimilar.html
O8 - Extra context menu item: Translate Page into English - res://c:\program files\google\GoogleToolbar2.dll/cmtrans.html
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
O9 - Extra button: Spyware Doctor - {2D663D1A-8670-49D9-A1A5-4C56B4E14E84} - C:\PROGRA~1\SPYWAR~1\tools\iesdpb.dll
O9 - Extra button: (no name) - {39FD89BF-D3F1-45b6-BB56-3582CCF489E1} - c:\program files\mcafee\spamkiller\mcapfbho.dll
O9 - Extra 'Tools' menuitem: McAfee Anti-Phishing Filter - {39FD89BF-D3F1-45b6-BB56-3582CCF489E1} - c:\program files\mcafee\spamkiller\mcapfbho.dll
O9 - Extra button: Recherche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://update.microsoft.com/microsoftupdate/v6/V5Controls/en/x86/client/muweb_sit...
O20 - AppInit_DLLs: ,
O23 - Service: Adobe LM Service - Adobe Systems - C:\Program Files\Fichiers communs\Adobe Systems Shared\Service\Adobelmsvc.exe
O23 - Service: France Telecom Routing Table Service (FTRTSVC) - France Telecom - C:\WINDOWS\System32\FTRTSVC.exe
O23 - Service: McAfee WSC Integration (McDetect.exe) - McAfee, Inc - c:\program files\mcafee.com\agent\mcdetect.exe
O23 - Service: McAfee.com McShield (McShield) - McAfee Inc. - c:\PROGRA~1\mcafee.com\vso\mcshield.exe
O23 - Service: McAfee Task Scheduler (McTskshd.exe) - McAfee, Inc - c:\PROGRA~1\mcafee.com\agent\mctskshd.exe
O23 - Service: McAfee SecurityCenter Update Manager (mcupdmgr.exe) - McAfee, Inc - C:\PROGRA~1\McAfee.com\Agent\mcupdmgr.exe
O23 - Service: McAfee Personal Firewall Service (MpfService) - McAfee Corporation - C:\PROGRA~1\McAfee.com\PERSON~1\MpfService.exe
O23 - Service: McAfee SpamKiller Server (MskService) - McAfee Inc. - C:\PROGRA~1\McAfee\SPAMKI~1\MSKSrvr.exe