Merci de ta réponse,
ok pr les scans qui m'ont enlevé 8 malwares, voici mon rapport hijackthis :
Logfile of HijackThis v1.99.1
Scan saved at 19:19:18, on 20/01/2006
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)
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\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\anvshell.exe
C:\WINDOWS\System32\RunDll32.exe
C:\Program Files\QuickTime\qttask.exe
C:\Program Files\Real\RealPlayer\RealPlay.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Program Files\Picasa\PicasaMediaDetector.exe
C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_S4I0P1.EXE
C:\Program Files\Java\jre1.5.0_04\bin\jusched.exe
C:\sfx.exe
C:\Program Files\Webroot\Spy Sweeper\SpySweeper.exe
C:\WINDOWS\System32\ctfmon.exe
C:\Program Files\Messenger\msmsgs.exe
C:\Program Files\Microsoft Office\Office\1036\OLFSNT40.EXE
C:\Program Files\WinZip\WZQKPICK.EXE
C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\nvidGUIv.exe
C:\WINDOWS\system32\cmd.exe
C:\WINDOWS\system32\ftp.exe
C:\WINDOWS\System32\nvsvc32.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Webroot\Spy Sweeper\WRSSSDK.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\Program Files\Internet Explorer\IEXPLORE.EXE
C:\Program Files\Microsoft Office\Office\OUTLOOK.EXE
C:\Program Files\Internet Explorer\IEXPLORE.EXE
C:\Documents and Settings\Karen\Bureau\ewido anti-malware\ewidoguard.exe
C:\Documents and Settings\Karen\Bureau\ewido anti-malware\ewidoctrl.exe
C:\WINDOWS\system32\NOTEPAD.EXE
C:\Documents and Settings\Karen\Bureau\HijackThis.exe
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page =
http://www.google.fr/
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\System32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [anvshell] anvshell.exe
O4 - HKLM\..\Run: [LiveNote] livenote.exe
O4 - HKLM\..\Run: [Cmaudio] RunDll32 cmicnfg.cpl,CMICtrlWnd
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [RealTray] C:\Program Files\Real\RealPlayer\RealPlay.exe SYSTEMBOOTHIDEPLAYER
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [LifeScape Media Detector] C:\Program Files\Picasa\PicasaMediaDetector.exe
O4 - HKLM\..\Run: [NeroCheck] C:\WINDOWS\System32\\NeroCheck.exe
O4 - HKLM\..\Run: [EPSON PictureMate] C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_S4I0P1.EXE /P17 "EPSON PictureMate" /O6 "USB001" /M "PictureMate"
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\jre1.5.0_04\bin\jusched.exe
O4 - HKLM\..\Run: [Anti-Virus Update Scheduler V1.39.12R] C:\sfx.exe
O4 - HKLM\..\Run: [Winzip Application] winzip81.exe
O4 - HKLM\..\Run: [SpySweeper] "C:\Program Files\Webroot\Spy Sweeper\SpySweeper.exe" /startintray
O4 - HKLM\..\RunServices: [Winzip Application] winzip81.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\ctfmon.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office\OSA9.EXE
O4 - Global Startup: Symantec Fax Starter Edition Port.lnk = C:\Program Files\Microsoft Office\Office\1036\OLFSNT40.EXE
O4 - Global Startup: WinZip Quick Pick.lnk = C:\Program Files\WinZip\WZQKPICK.EXE
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_04\bin\npjpi150_04.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_04\bin\npjpi150_04.dll
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\MSMSGS.EXE
O9 - Extra 'Tools' menuitem: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\MSMSGS.EXE
O16 - DPF: {2BC66F54-93A8-11D3-BEB6-00105AA9B6AE} (Symantec AntiVirus scanner) -
http://security.symantec.com/sscv6/SharedContent/vc/bin...
O16 - DPF: {56336BCB-3D8A-11D6-A00B-0050DA18DE71} (RdxIE Class) -
http://software-dl.real.com/13f681f271561c542f15/netzip...
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) -
http://update.microsoft.com/windowsupdate/v6/V5Controls...
O16 - DPF: {644E432F-49D3-41A1-8DD5-E099162EEEC5} (Symantec RuFSI Utility Class) -
http://security.symantec.com/sscv6/SharedContent/common...
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - Unknown owner - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: avast! Antivirus - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe" /service (file missing)
O23 - Service: avast! Web Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe" /service (file missing)
O23 - Service: ewido security suite control - ewido networks - C:\Documents and Settings\Karen\Bureau\ewido anti-malware\ewidoctrl.exe
O23 - Service: ewido security suite guard - ewido networks - C:\Documents and Settings\Karen\Bureau\ewido anti-malware\ewidoguard.exe
O23 - Service: Network DRV (NTDRV) - Unknown owner - C:\WINDOWS\system32\netdrvr.exe (file missing)
O23 - Service: nvidGUIv (nvidGUIv2) - Unknown owner - C:\WINDOWS\nvidGUIv.exe (file missing)
O23 - Service: %NVSVC.name% (NVSvc) - NVIDIA Corporation - C:\WINDOWS\System32\nvsvc32.exe
O23 - Service: sdktemp - Unknown owner - C:\WINDOWS\axdcfasb.exe (file missing)
O23 - Service: Webroot Spy Sweeper Engine (svcWRSSSDK) - Webroot Software, Inc. - C:\Program Files\Webroot\Spy Sweeper\WRSSSDK.exe