Infection Pc anti-spyware

Bonjour,

Mon ordinateur est infecté par le virus "pc anti-spyware". J'ai suivi les instructions données sur ce forum et ai donc télécharger BFix (dont le rapport ne révèle aucune infection), puis HijackThis (renommé en Monjack.exe comme conseillé). Voici le rapport donné :

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 16:26:00, on 27/04/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16640)
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\ibmpmsvc.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Fichiers communs\Microsoft Shared\VS7Debug\mdm.exe
C:\WINDOWS\System32\QCONSVC.EXE
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\TpKmpSVC.exe
C:\WINDOWS\System32\acs.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\system32\wscntfy.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Documents and Settings\All Users\Application Data\udabclcf\cvmzmbct.exe
C:\Program Files\Neuf\Kit\WiFi\9wifi.exe
C:\Program Files\MSN Messenger\MsnMsgr.Exe
C:\Program Files\IBM\Messages By IBM\ibmmessages.exe
C:\Program Files\Skype\Phone\Skype.exe
C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
C:\WINDOWS\system32\adafedqx.exe
C:\Program Files\Skype\Plugin Manager\skypePM.exe
C:\Program Files\MSN Messenger\usnsvc.exe
C:\WINDOWS\explorer.exe
C:\Documents and Settings\Etudiant\Bureau\MonJack.exe

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
O2 - BHO: Yahoo! Toolbar Helper - {02478D38-C3F9-4EFB-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: Skype add-on (mastermind) - {22BF413B-C6D2-4d91-82A9-A0F997BA588C} - C:\Program Files\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.dll
O2 - BHO: DriveLetterAccess - {5CA3D70E-1895-11CF-8E15-001234567890} - C:\WINDOWS\system32\dla\tfswshx.dll
O2 - BHO: (no name) - {64F56FC1-1272-44CD-BA6E-39723696E350} - (no file)
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
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
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar1.dll
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: [PRONoMgrWired] "C:\Program Files\Intel\PROSetWired\NCS\PROSet\PRONoMgr.exe"
O4 - HKLM\..\Run: [Autoconfigurateur WiFi Neuf] "C:\Program Files\Neuf\Kit\WiFi\9wifi.exe"
O4 - HKLM\..\Run: [PC Pitstop Optimize Scheduler] C:\Program Files\PCPitstop\Optimize\PCPOptimize.exe -boot
O4 - HKLM\..\Run: [PCPitstop Optimize Registration Reminder] C:\Program Files\PCPitstop\Optimize\Reminder.exe
O4 - HKLM\..\RunOnce: [avp6_post_install] msiexec.exe /i"C:\DOCUME~1\Etudiant\LOCALS~1\Temp\KAV7.0.1.325\kav7.0.1.325fr.msi"
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
O4 - HKCU\..\Run: [ibmmessages] C:\Program Files\IBM\Messages By IBM\ibmmessages.exe
O4 - HKCU\..\Run: [Skype] "C:\Program Files\Skype\Phone\Skype.exe" /nosplash /minimized
O4 - HKCU\..\Run: [swg] C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
O4 - HKCU\..\Run: [vvavsfct] C:\WINDOWS\system32\adafedqx.exe
O4 - HKCU\..\Run: [SpyClean] C:\Program Files\Netcom3 Cleaner\SpyClean.exe
O4 - HKLM\..\Policies\Explorer\Run: [aNVmjVU6RX] C:\Documents and Settings\All Users\Application Data\udabclcf\cvmzmbct.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: Lancement rapide d'Adobe Reader.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O9 - Extra button: Skype - {77BF5300-1474-4EC7-9980-D32B190E9B07} - C:\Program Files\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.dll
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
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
O15 - Trusted Zone: https://easi.grenoble-em.com/PC_MV_login.aspx?ReturnUrl=%2f
O15 - Trusted Zone: https://el.grenoble-em.com/login/index.php
O15 - Trusted Zone: http://mediaplus.grenoble-em.com
O15 - Trusted Zone: www.grenoble-em.com
O15 - Trusted Zone: https://www.grenoble-em.com/
O15 - Trusted Zone: http://www.mti-brothers.com
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: {867E13F2-7F31-44FB-AC97-CD38E0DC46EF} (HardwareDetection Control) - https://www.touslesdrivers.com/index.php?v_page=29
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload2.macromedia.com/get/shockwave/cabs/flash/swflash.cab
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\FICHIE~1\Skype\SKYPE4~1.DLL
O21 - SSODL: wdpoefan - {4E536F80-88AC-458F-B542-75DEF6B81AC7} - C:\WINDOWS\wdpoefan.dll
O23 - Service: ACU Configuration Service (ACS) - Unknown owner - C:\WINDOWS\System32\acs.exe
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: avast! Antivirus - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe (file missing)
O23 - Service: avast! Web Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe (file missing)
O23 - Service: Google Updater Service (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: ThinkPad PM Service (IBMPMSVC) - Unknown owner - C:\WINDOWS\system32\ibmpmsvc.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Fichiers communs\InstallShield\Driver\1050\Intel 32\IDriverT.exe
O23 - Service: NetCom3 Service (Netcom3) - Unknown owner - C:\Program Files\Netcom3 Cleaner\PSCMonitor.exe
O23 - Service: Intel NCS NetService (NetSvc) - Intel(R) Corporation - C:\Program Files\Intel\PROSetWired\NCS\Sync\NetSvc.exe
O23 - Service: QCONSVC - Lenovo - C:\WINDOWS\System32\QCONSVC.EXE
O23 - Service: IBM KCU Service (TpKmpSVC) - Unknown owner - C:\WINDOWS\system32\TpKmpSVC.exe