Noss, Merci de ta réponse

Tout d'abord,j'ai déja ewido installé sur le pc,avec des process en background surveillance en temps réel et mise à jour automatique....
J'ai bien fait ce que tu m'a suggéré,ci dessous les logs....
ewido ras
---------------------------------------------------------
ewido security suite - Rapport de scan
---------------------------------------------------------

+ Créé le: 13:28:01, 18/11/2005
+ Somme de contrôle: E36831E0

+ Résultats du scan:

Pas de fichiers infectés trouvés!


::Fin du rapport
<<<<<<<<<<<<<<<<<<<<<<<<<
Logfile of HijackThis v1.99.1
Scan saved at 13:28:44, on 18/11/2005
Platform: Windows XP (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 (6.00.2600.0000)

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\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Apps\ActivBoard\nhksrv.exe
C:\Program Files\Utilitaires chargés\Avast\aswUpdSv.exe
C:\Program Files\Utilitaires chargés\Avast\ashServ.exe
C:\Program Files\Utilitaires chargés\Diskeeper\DkService.exe
C:\Program Files\Fichiers communs\EPSON\EBAPI\SAgent2.exe
C:\Program Files\Utilitaires chargés\ewido\ewidoctrl.exe
C:\Program Files\Fichiers communs\Microsoft Shared\VS7Debug\mdm.exe
C:\WINDOWS\system32\slserv.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Virtual CD v4 SDK\system\vcssecs.exe
C:\Program Files\Utilitaires chargés\Avast\ashMaiSv.exe
C:\Program Files\Utilitaires chargés\Avast\ashWebSv.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\Explorer.EXE
C:\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\WINDOWS\System32\ctfmon.exe
C:\Documents and Settings\perso\Bureau\HijackThis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.fr/
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page =
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: DgnWebIE - {2843DAC1-05EF-11D2-95BA-0060083493D6} - C:\Program Files\Dragon Systems\NaturallySpeaking\Program\web_ie.dll
O2 - BHO: bho2gr Class - {31FF080D-12A3-439A-A2EF-4BA95A3148E8} - C:\Program Files\Utilitaires chargés\GetRight\xx2gr.dll
O2 - BHO: (no name) - {724d43a9-0d85-11d4-9908-00400523e39a} - C:\Program Files\Siber Systems\AI RoboForm\RoboForm.dll
O2 - BHO: (no name) - {78364D99-A640-4ddf-B91A-67EFF8373045} - (no file)
O3 - Toolbar: &RoboForm - {724d43a0-0d85-11d4-9908-00400523e39a} - C:\Program Files\Siber Systems\AI RoboForm\RoboForm.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\system32\msdxm.ocx
O4 - HKLM\..\Run: [KernelFaultCheck] %systemroot%\system32\dumprep 0 -k
O4 - HKLM\..\Run: [EPSON Stylus C62 Series] C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_S10IC2.EXE /P23 "EPSON Stylus C62 Series" /O5 "LPT1:" /M "Stylus C62"
O4 - HKLM\..\Run: [ATIPTA] C:\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [ATIModeChange] Ati2mdxx.exe
O4 - HKLM\..\Run: [MSConfig] C:\WINDOWS\PCHealth\HelpCtr\Binaries\MSConfig.exe /auto
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\ctfmon.exe
O4 - HKCU\..\RunOnce: [CleanUp!] C:\Program Files\Utilitaires chargés\Cleanup\Cleanup.exe /WindowsRestart
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Control Panel present
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O8 - Extra context menu item: Enregistrer &[ - file://C:\Program Files\Siber Systems\AI RoboForm\RoboFormComSavePass.html
O8 - Extra context menu item: Grab &Selected Text... - res://C:\Program Files\Utilitaires chargés\Cociter\CogitumHelpers.dll/ctGrab.htm
O8 - Extra context menu item: Ouvrir avec GetRight - C:\Program Files\Utilitaires chargés\GetRight\GRbrowse.htm
O8 - Extra context menu item: Personnaliser &Menu - file://C:\Program Files\Siber Systems\AI RoboForm\RoboFormComCustomizeIEMenu.html
O8 - Extra context menu item: Remplir &$ - file://C:\Program Files\Siber Systems\AI RoboForm\RoboFormComFillForms.html
O8 - Extra context menu item: Télecharger avec GetRight - C:\Program Files\Utilitaires chargés\GetRight\GRdownload.htm
O8 - Extra context menu item: Vérifier la date de dernière mise à jour - C:\windows\modifpage.htm
O16 - DPF: {0EB0E74A-2A76-4AB3-A7FB-9BD8C29F7F75} (CKAVWebScan Object) - http://www.kaspersky.com/downloads/kws/kavwebscan_unicode.cab
O16 - DPF: {193C772A-87BE-4B19-A7BB-445B226FE9A1} (ewidoOnlineScan Control) - http://download.ewido.net/ewidoOnlineScan.cab
O16 - DPF: {2917297F-F02B-4B9D-81DF-494B6333150B} (Minesweeper Flags Class) - http://messenger.zone.msn.com/binary/MineSweeper.cab31267.cab
O16 - DPF: {5D86DDB5-BDF9-441B-9E9E-D4730F4EE499} (BDSCANONLINE Control) - http://www.bitdefender.com/scan8/oscan8.cab
O16 - DPF: {6A060448-60F9-11D5-A6CD-0002B31F7455} - http://metaboli.wanadoo.fr/components/Metaboli.ocx
O16 - DPF: {80DD2229-B8E4-4C77-B72F-F22972D723EA} - http://www.bitdefender.com/scan/Msie/bitdefender.cab
O16 - DPF: {8E0D4DE5-3180-4024-A327-4DFAD1796A8D} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/MessengerStatsClient.cab31267.cab
O16 - DPF: {8EB3FF4E-86A1-4717-884D-7BA2D38272CB} - http://www.securitoo.com/fra/pages/navol/fscax.cab
O16 - DPF: {9A9307A0-7DA4-4DAF-B042-5009F29E09E1} (ActiveScan Installer Class) - http://acs.pandasoftware.com/activescan/as5free/asinst.cab
O16 - DPF: {BB21F850-63F4-4EC9-BF9D-565BD30C9AE9} (ASquaredScanForm Element) - http://www.windowsecurity.com/trojanscan/axscan.cab
O16 - DPF: {C81B5180-AFD1-41A3-97E1-99E8D254DB98} (CSS Web Installer Class) - http://www.commandondemand.com/eval/cod/cabs/cssweb.cab
O16 - DPF: {EF791A6B-FC12-4C68-99EF-FB9E207A39E6} - http://download.mcafee.com/molbin/iss-loc/mcfscan/2,1,0,4624/mcfscan.cab
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - Unknown owner - C:\Program Files\Utilitaires chargés\Avast\aswUpdSv.exe
O23 - Service: Ati HotKey Poller - Unknown owner - C:\WINDOWS\System32\Ati2evxx.exe
O23 - Service: avast! Antivirus - Unknown owner - C:\Program Files\Utilitaires chargés\Avast\ashServ.exe
O23 - Service: avast! Mail Scanner - Unknown owner - C:\Program Files\Utilitaires chargés\Avast\ashMaiSv.exe" /service (file missing)
O23 - Service: avast! Web Scanner - Unknown owner - C:\Program Files\Utilitaires chargés\Avast\ashWebSv.exe" /service (file missing)
O23 - Service: Diskeeper - Executive Software International, Inc. - C:\Program Files\Utilitaires chargés\Diskeeper\DkService.exe
O23 - Service: EPSON Printer Status Agent2 (EPSONStatusAgent2) - SEIKO EPSON CORPORATION - C:\Program Files\Fichiers communs\EPSON\EBAPI\SAgent2.exe
O23 - Service: ewido security suite control - ewido networks - C:\Program Files\Utilitaires chargés\ewido\ewidoctrl.exe
O23 - Service: ewido security suite guard - ewido networks - C:\Program Files\Utilitaires chargés\ewido\ewidoguard.exe
O23 - Service: Netropa NHK Server (nhksrv) - Unknown owner - C:\Apps\ActivBoard\nhksrv.exe
O23 - Service: SmartLinkService (SLService) - - C:\WINDOWS\SYSTEM32\slserv.exe
O23 - Service: Symantec Network Drivers Service (SNDSrvc) - Vireo Software - (no file)
O23 - Service: Virtual CD v4 Security service (SDK - Version) (VCSSecS) - H+H Software GmbH - C:\Program Files\Virtual CD v4 SDK\system\vcssecs.exe

Merci de me tenir au courant....bonne journée yvon