voici mon hijackthis :

Logfile of HijackThis v1.99.1
Scan saved at 22:00:24, on 11/08/2006
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\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
c:\program files\panda software\panda platinum 2006 internet security\firewall\PNMSRV.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\eHome\ehRecvr.exe
C:\WINDOWS\eHome\ehSched.exe
C:\Program Files\ewido anti-spyware 4.0\guard.exe
C:\Program Files\Panda Software\Panda Platinum 2006 Internet Security\PavFnSvr.exe
C:\Program Files\Fichiers communs\Panda Software\PavShld\pavprsrv.exe
C:\Program Files\Panda Software\Panda Platinum 2006 Internet Security\pavsrv51.exe
C:\Program Files\Panda Software\Panda Platinum 2006 Internet Security\AntiSpam\pskmssvc.exe
C:\Program Files\Panda Software\Panda Platinum 2006 Internet Security\AVENGINE.EXE
C:\WINDOWS\system32\Ati2evxx.exe
C:\Program Files\Panda Software\Panda Platinum 2006 Internet Security\PsImSvc.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Panda Software\Panda Platinum 2006 Internet Security\TPSrv.exe
C:\WINDOWS\ehome\ehtray.exe
C:\WINDOWS\AGRSMMSG.exe
C:\WINDOWS\system32\RunDll32.exe
C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\Program Files\Panda Software\Panda Platinum 2006 Internet Security\APVXDWIN.EXE
C:\Program Files\Java\jre1.5.0_06\bin\jusched.exe
C:\Program Files\ewido anti-spyware 4.0\ewido.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Messenger\msmsgs.exe
C:\Program Files\SAGEM\SAGEM F@st 800-840\dslmon.exe
C:\WINDOWS\system32\dllhost.exe
C:\WINDOWS\eHome\ehmsas.exe
C:\WINDOWS\System32\alg.exe
C:\Program Files\Panda Software\Panda Platinum 2006 Internet Security\SRVLOAD.EXE
C:\Program Files\Panda Software\Panda Platinum 2006 Internet Security\WebProxy.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\WINDOWS\system32\rundll32.exe
C:\WINDOWS\system32\mmc.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\!Hijackthis\Scanner.exe
C:\Program Files\Panda Software\Panda Platinum 2006 Internet Security\avciman.exe
C:\Program Files\Panda Software\Panda Platinum 2006 Internet Security\psimreal.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.ikea.com/webapp/wcs/sto [...] ryId=15594
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: SWEETIE - {1A0AADCD-3A72-4b5f-900F-E3BB5A838E2A} - C:\PROGRA~1\MACROG~1\SWEETI~1\toolbar.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O2 - BHO: (no name) - {85D78973-BD4D-4487-B07B-A85AB3CF7803} - C:\WINDOWS\system32\ssqrq.dll
O3 - Toolbar: SweetIM For Internet Explorer - {BC4FFE41-DE9F-46fa-B455-AAD49B9F9938} - C:\Program Files\Macrogaming\SweetIMBarForIE\toolbar.dll
O4 - HKLM\..\Run: [ehTray] C:\WINDOWS\ehome\ehtray.exe
O4 - HKLM\..\Run: [AGRSMMSG] AGRSMMSG.exe
O4 - HKLM\..\Run: [Cmaudio] RunDll32 cmicnfg.cpl,CMICtrlWnd
O4 - HKLM\..\Run: [ATIPTA] C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [APVXDWIN] "C:\Program Files\Panda Software\Panda Platinum 2006 Internet Security\APVXDWIN.EXE" /s
O4 - HKLM\..\Run: [SCANINICIO] "C:\Program Files\Panda Software\Panda Platinum 2006 Internet Security\Inicio.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\jre1.5.0_06\bin\jusched.exe
O4 - HKLM\..\Run: [REGSHAVE] C:\Program Files\REGSHAVE\REGSHAVE.EXE /AUTORUN
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [UserFaultCheck] %systemroot%\system32\dumprep 0 -u
O4 - HKLM\..\Run: [OESpamTest] C:\PROGRA~1\MICROA~1\SCURIT~1\ANTI-V~1\ANTI-S~1\OESpamTest.ExE
O4 - HKLM\..\Run: [!ewido] "C:\Program Files\ewido anti-spyware 4.0\ewido.exe" /minimized
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
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: [SpybotSD TeaTimer] C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - Startup: Adobe Gamma.lnk = C:\Program Files\Fichiers communs\Adobe\Calibration\Adobe Gamma Loader.exe
O4 - Global Startup: Adobe Gamma Loader.exe.lnk = C:\Program Files\Fichiers communs\Adobe\Calibration\Adobe Gamma Loader.exe
O4 - Global Startup: DSLMON.lnk = C:\Program Files\SAGEM\SAGEM F@st 800-840\dslmon.exe
O4 - Global Startup: Lancement rapide d'Adobe Reader.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
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
O16 - DPF: {1F83CD9E-505E-4F87-BECE-0832A763E36F} (Image Uploader 3.0 Control) - http://www.mypixmania.com/importer/MypixUploader.cab
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/window [...] 5055133671
O16 - DPF: {867E13F2-7F31-44FB-AC97-CD38E0DC46EF} (HardwareDetection Control) - http://charon777.free.fr/plugins/hardwaredetection.cab
O16 - DPF: {9A9307A0-7DA4-4DAF-B042-5009F29E09E1} (ActiveScan Installer Class) - http://acs.pandasoftware.com/activ [...] asinst.cab
O16 - DPF: {B38870E4-7ECB-40DA-8C6A-595F0A5519FF} (MsnMessengerSetupDownloadControl Class) - http://messenger.msn.com/download/ [...] loader.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{CB9EFF09-0CE7-48EC-993B-B932324AD16A}: NameServer = 84.103.237.142 86.64.145.142
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - "C:\PROGRA~1\MSNMES~1\msgrapp.dll" (file missing)
O20 - Winlogon Notify: ssqrq - C:\WINDOWS\system32\ssqrq.dll
O20 - Winlogon Notify: WgaLogon - C:\WINDOWS\SYSTEM32\WgaLogon.dll
O20 - Winlogon Notify: winmoh32 - winmoh32.dll (file missing)
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: ewido anti-spyware 4.0 guard - Anti-Malware Development a.s. - C:\Program Files\ewido anti-spyware 4.0\guard.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Fichiers communs\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: Panda Function Service (PAVFNSVR) - Panda Software International - C:\Program Files\Panda Software\Panda Platinum 2006 Internet Security\PavFnSvr.exe
O23 - Service: Panda Process Protection Service (PavPrSrv) - Panda Software - C:\Program Files\Fichiers communs\Panda Software\PavShld\pavprsrv.exe
O23 - Service: Panda anti-virus service (PAVSRV) - Panda Software International - C:\Program Files\Panda Software\Panda Platinum 2006 Internet Security\pavsrv51.exe
O23 - Service: Panda Antispam Engine (pmshellsrv) - Panda Software International - C:\Program Files\Panda Software\Panda Platinum 2006 Internet Security\AntiSpam\pskmssvc.exe
O23 - Service: Panda Network Manager (PNMSRV) - Panda Software - c:\program files\panda software\panda platinum 2006 internet security\firewall\PNMSRV.EXE
O23 - Service: Panda IManager Service (PSIMSVC) - Panda Software - C:\Program Files\Panda Software\Panda Platinum 2006 Internet Security\PsImSvc.exe
O23 - Service: Sandra Data Service (SandraDataSrv) - SiSoftware - C:\Program Files\SiSoftware\SiSoftware Sandra Lite 2005.SR3\RpcDataSrv.exe
O23 - Service: Sandra Service (SandraTheSrv) - SiSoftware - C:\Program Files\SiSoftware\SiSoftware Sandra Lite 2005.SR3\RpcSandraSrv.exe
O23 - Service: Panda TPSrv (TPSrv) - Panda Software - C:\Program Files\Panda Software\Panda Platinum 2006 Internet Security\TPSrv.exe

En plus j'ai fait ma petite recherche sur internet et on me dirige vers des mises à jour windows (que j'ai automatiquementtous les jours) et des outils de détection Microsoft qui eux ne trouvent rien!!!

Panda lui trouve ce virus Exploit/LSASS

bonjour
infection Vundo

Télécharger sur le Bureau.
Vundofix

= Double-clic VundoFix.exe.
=Cocher la case Run VundoFix as a task.
=Attendre le redemarrage de Vundofix

=Clic Scan for Vundo..
=Puis clic Remove Vundo.
= Puis yes
= Le Bureau disparaît un moment lors de la suppression des fichiers.
=Message shutdown; clic OK
=Redémarrage auto
=copier le rapport qui est dans C:\vundofix.txt
------
relancer hijack
cocher et fix checked

O2 - BHO: (no name) - {85D78973-BD4D-4487-B07B-A85AB3CF7803} - C:\WINDOWS\system32\ssqrq.dll
O20 - Winlogon Notify: ssqrq - C:\WINDOWS\system32\ssqrq.dll
O20 - Winlogon Notify: winmoh32 - winmoh32.dll (file missing)
----------
refaire un hijack
le mettre dans la réponse avec le rapport Vundofix