Infection par Win32:NTRootKit-B [Trj]

Bonjour,

Mon PC est infecté oar Win32:NTRootKit-B [Trj]. Avast me le signale mais ne peut rien faire.
Voilà le rapport Hijackthis:
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 09:48:27, on 24/02/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)
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\Ati2evxx.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
I:\AVAST\aswUpdSv.exe
I:\AVAST\ashServ.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
I:\UTILITAIRES\a-squared Anti-Malware\a2service.exe
C:\WINDOWS\System32\FTRTSVC.exe
C:\Program Files\iolo\Common\Lib\ioloDMVSvc.exe
C:\WINDOWS\system32\slserv.exe
C:\PROGRA~1\SPEEDB~1\VideoAcceleratorEngine.exe
C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\WINDOWS\SOUNDMAN.EXE
C:\Program Files\CyberLink\PowerDVD\PDVDServ.exe
C:\Program Files\iTunes\iTunesHelper.exe
I:\AVAST\ashDisp.exe
I:\UTILITAIRES\System Mechanic 7\SMSystemAnalyzer.exe
C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe
C:\Program Files\Thomson\SpeedTouch USB\Dragdiag.exe
C:\Program Files\QuickTime\qttask.exe
I:\UTILITAIRES\a-squared Anti-Malware\a2guard.exe
I:\UTILITAIRES\spftray.exe
C:\PROGRA~1\Wanadoo\TaskBarIcon.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
C:\PROGRA~1\Wanadoo\GestionnaireInternet.exe
C:\Program Files\MSN Messenger\msnmsgr.exe
C:\PROGRA~1\SPEEDB~1\VideoAccelerator.exe
I:\UTILITAIRES\Spybot - Search & Destroy\TeaTimer.exe
I:\AVAST\ashMaiSv.exe
I:\AVAST\ashWebSv.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:\Program Files\iPod\bin\iPodService.exe
C:\WINDOWS\System32\ALERTM~1\ALERTM~1.EXE
I:\UTILITAIRES\spfprc.exe
C:\WINDOWS\System32\wbem\wmiprvse.exe
C:\WINDOWS\System32\alg.exe
C:\PROGRA~1\Wanadoo\Watch.exe
C:\Program Files\MSN Messenger\usnsvc.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\WINDOWS\system32\rundll32.exe
I:\UTILITAIRES\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.google.fr/?gws_rd=ssl
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
R3 - URLSearchHook: (no name) - {0A94B116-4504-4e26-AB05-E61E474AA38B} - C:\Program Files\AskPBar\SrchAstt\1.bin\A9SRCHAS.DLL (file missing)
F3 - REG:win.ini: run="C:\WINDOWS\system32\winupdate.exe"
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar2.dll
O4 - HKLM\..\Run: [Adobe Photo Downloader] "I:\UTILITAIRES\3.0\Apps\apdproxy.exe"
O4 - HKLM\..\Run: [ATIPTA] C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [RemoteControl] "C:\Program Files\CyberLink\PowerDVD\PDVDServ.exe"
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [avast!] I:\AVAST\ashDisp.exe
O4 - HKLM\..\Run: [SMSystemAnalyzer] "I:\UTILITAIRES\System Mechanic 7\SMSystemAnalyzer.exe"
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe" -osboot
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: [SpeedTouch USB Diagnostics] "C:\Program Files\Thomson\SpeedTouch USB\Dragdiag.exe" /icon
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [a-squared] "I:\UTILITAIRES\a-squared Anti-Malware\a2guard.exe" /d=60
O4 - HKLM\..\Run: [349cb63b] rundll32.exe "C:\WINDOWS\system32\khqnkrse.dll",b
O4 - HKLM\..\Run: [spywarefighterguard] I:\UTILITAIRES\spftray.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [swg] C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
O4 - HKCU\..\Run: [WOOKIT] C:\PROGRA~1\Wanadoo\GestMaj.exe GestionnaireInternet.exe
O4 - HKCU\..\Run: [msnmsgr] "C:\Program Files\MSN Messenger\msnmsgr.exe" /background
O4 - HKCU\..\Run: [SpybotSD TeaTimer] I:\UTILITAIRES\Spybot - Search & Destroy\TeaTimer.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')
O4 - Global Startup: Microsoft Office.lnk = I:\LOGICIELS\Office\OSA9.EXE
O8 - Extra context menu item: &Clean Traces - C:\Program Files\DAP\Privacy Package\dapcleanerie.htm
O8 - Extra context menu item: &Download with &DAP - C:\Program Files\DAP\dapextie.htm
O8 - Extra context menu item: Download &all with DAP - C:\Program Files\DAP\dapextie2.htm
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: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_01\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_01\bin\ssv.dll
O9 - Extra button: (no name) - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - I:\UTILIT~1\SPYBOT~1\SDHelper.dll
O9 - Extra 'Tools' menuitem: Spybot - Search & Destroy Configuration - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - I:\UTILIT~1\SPYBOT~1\SDHelper.dll
O9 - Extra button: Orange - {1462651F-F4BA-4C76-A001-C4284D0FE16E} - https://www.orange.fr/portail (file missing) (HKCU)
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: {5D6F45B3-9043-443D-A792-115447494D24} (UnoCtrl Class) - http://messenger.zone.msn.com/FR-FR/a-UNO1/GAME_UNO1.cab
O16 - DPF: {BFF1950D-B1B4-4AE8-B842-B2CCF06D9A1B} (Zylom Games Player) - http://game06.zylom.com/activex/zylomgamesplayer.cab
O16 - DPF: {C3F79A2B-B9B4-4A66-B012-3EE46475B072} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/MessengerStatsPAClient.cab56907.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{E44F8CE3-8285-48D4-9C1E-F024B3CA339D}: NameServer = 81.253.149.9 80.10.246.132
O23 - Service: a-squared Anti-Malware Service (a2AntiMalware) - Emsi Software GmbH - I:\UTILITAIRES\a-squared Anti-Malware\a2service.exe
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - I:\AVAST\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 - I:\AVAST\ashServ.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - I:\AVAST\ashMaiSv.exe
O23 - Service: avast! Web Scanner - ALWIL Software - I:\AVAST\ashWebSv.exe
O23 - Service: France Telecom Routing Table Service (FTRTSVC) - France Telecom - C:\WINDOWS\System32\FTRTSVC.exe
O23 - Service: Google Updater Service (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: iolo DMV Service (ioloDMV) - Unknown owner - C:\Program Files\iolo\Common\Lib\ioloDMVSvc.exe
O23 - Service: Service de l'iPod (iPod Service) - Apple Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: SmartLinkService (SLService) - Smart Link - C:\WINDOWS\SYSTEM32\slserv.exe
O23 - Service: SPYWAREfighterRP - SpamFighter APS - I:\UTILITAIRES\spfprc.exe
O23 - Service: VideoAcceleratorEngine - Speedbit Ltd. - C:\PROGRA~1\SPEEDB~1\VideoAcceleratorEngine.exe
O23 - Service: Service Partage réseau du Lecteur Windows Media (WMPNetworkSvc) - Unknown owner - C:\Program Files\Windows Media Player\WMPNetwk.exe (file missing)