Merci pour la réponse rapide.
J'ai installé HijackThis mais je n'ai pas eu le choix de le mettre sur le bureau.
Du coup, je ne sais pas où il est (j'ai fait rechercher sur le C. mais en vain) et je n'ai pas pu le renommer ...
J'ai quand même lancé un scan et voici le résultat :
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 18:29:33, on 27/05/2009
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)
Boot mode: Normal
Running processes:
C:WINDOWSSystem32smss.exe
C:WINDOWSsystem32winlogon.exe
C:WINDOWSsystem32services.exe
C:WINDOWSsystem32lsass.exe
C:WINDOWSSystem32Ati2evxx.exe
C:WINDOWSsystem32svchost.exe
C:WINDOWSSystem32svchost.exe
C:WINDOWSsystem32spoolsv.exe
C:WINDOWSsystem32Ati2evxx.exe
C:WINDOWSExplorer.exe
C:WINDOWSsystem32axp.exe
C:Program FilesFichiers communsAcronisSchedule2schedul2.exe
C:Program FilesWindows LiveFamily Safetyfsssvc.exe
C:Program FilesSymantecNorton Ghost 2003GhostStartService.exe
C:Program FilesMcAfeeSiteAdvisorMcSACore.exe
C:PROGRA~1McAfeeMSCmcmscsvc.exe
c:program filesfichiers communsmcafeemnamcnasvc.exe
c:PROGRA~1FICHIE~1mcafeemcproxymcproxy.exe
C:PROGRA~1McAfeeVIRUSS~1mcshield.exe
C:Program FilesMcAfeeMPFMPFSrv.exe
C:Program FilesMcAfeeMSKMskSrver.exe
C:Program FilesMicrosoftSearch Enhancement PackSeaPortSeaPort.exe
C:WINDOWSsystem32sopidkc.exe
C:WINDOWSSystem32svchost.exe
c:PROGRA~1mcafee.comagentmcagent.exe
C:WINDOWSsystem32wscntfy.exe
C:PROGRA~1McAfeeVIRUSS~1mcsysmon.exe
C:Program FilesGoogleGoogleToolbarNotifierGoogleToolbarNotifier.exe
C:
pdie.exe
C:WINDOWSsystem32MDM.EXE
C:WINDOWSSystem32
eader_s.exe
C:WINDOWSSystem32svchost.exe
c:program FilesThunMail estabd.exe
C:WINDOWSSystem32svchost.exe
C:WINDOWSSystem32svchost.exe
C:WINDOWSSystem32svchost.exe
C:WINDOWSSystem32svchost.exe
C:WINDOWSSystem32avast!Antivirus.exe
C:Program FilesWindows LiveToolbarwltuser.exe
C:Program FilesInternet Exploreriexplore.exe
C:Documents and SettingsMAISONLocal SettingsTemporary Internet FilesContent.IE5QIEFFFVWHiJackThis[1].exe
R0 - HKCUSoftwareMicrosoftInternet ExplorerMain,Start Page =
http://www.google.fr/
R0 - HKCUSoftwareMicrosoftInternet ExplorerToolbar,LinksFolderName = Liens
R3 - URLSearchHook: Yahoo! Toolbar avec bloqueur de fenêtres pop-up - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - (no file)
F2 - REG:system.ini: Shell=Explorer.exe baxp.exe
F2 - REG:system.ini: UserInit=C:WINDOWSsystem32userinit.exe,C:DOCUME~1MAISONLOCALS~1Tempinit.exe
O2 - BHO: C:WINDOWSsystem32yhafd78auhd.dll - {c6c7b2a1-00f3-42bd-f434-00aaba2c8953} - C:WINDOWSsystem32yhafd78auhd.dll
O3 - Toolbar: McAfee SiteAdvisor Toolbar - {0EBBBE48-BAD4-4B4C-8E5A-516ABECAE064} - c:PROGRA~1mcafeeSITEAD~1mcieplg.dll
O3 - Toolbar: &Windows Live Toolbar - {21FA44EF-376D-4D53-9B0F-8A89D3229068} - C:Program FilesWindows LiveToolbarwltcore.dll
O3 - Toolbar: Google Toolbar - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - C:Program FilesGoogleGoogle ToolbarGoogleToolbar.dll
O4 - HKLM..Run: [998] C:
pdie.exe
O4 - HKLM..Run: [reader_s] C:WINDOWSSystem32
eader_s.exe
O4 - HKCU..Run: [svc] c:program FilesThunMail estabd.exe
O4 - HKCU..Run: [reader_s] C:Documents and SettingsMAISON
eader_s.exe
O4 - HKUS.DEFAULT..Run: [CTFMON.EXE] C:WINDOWSSystem32CTFMON.EXE (User 'Default user')
O7 - HKCUSoftwareMicrosoftWindowsCurrentVersionPoliciesSystem, DisableRegedit=1
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:Program FilesJavajre1.5.0_11inssv.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:Program FilesJavajre1.5.0_11inssv.dll
O9 - Extra button: Ajout Direct - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:Program FilesWindows LiveWriterWriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: &Ajout Direct dans Windows Live Writer - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:Program FilesWindows LiveWriterWriterBrowserExtension.dll
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:Program FilesMessengermsmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:Program FilesMessengermsmsgs.exe
O16 - DPF: {A18962F6-E6ED-40B1-97C9-1FB36F38BFA8} -
http://www.photoreflex.com/tools/ImageU ... oader3.cab
O17 - HKLMSystemCCSServicesTcpip..{10DA6281-4CC6-4E57-BD77-0210FF8F6067}: NameServer = 86.64.145.146 84.103.237.146
O17 - HKLMSystemCS1ServicesTcpip..{10DA6281-4CC6-4E57-BD77-0210FF8F6067}: NameServer = 86.64.145.146 84.103.237.146
O18 - Protocol: sacore - {5513F07E-936B-4E52-9B00-067394E91CC5} - c:PROGRA~1mcafeeSITEAD~1mcieplg.dll
O18 - Filter: x-sdch - {B1759355-3EEC-4C1E-B0F1-B719FE26E377} - C:Program FilesGoogleGoogle ToolbarComponentfastsearch_A8904FB862BD9564.dll
O20 - AppInit_DLLs: c:progra~1ThunMail estabd.dll
O22 - SharedTaskScheduler: gsf87hfunf98398jd - {C6C7B2A1-00F3-42BD-F434-00AABA2C8953} - C:WINDOWSsystem32yhafd78auhd.dll
O23 - Service: Acronis Scheduler2 Service (AcrSch2Svc) - Acronis - C:Program FilesFichiers communsAcronisSchedule2schedul2.exe
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:WINDOWSSystem32Ati2evxx.exe
O23 - Service: ATI Smart - Unknown owner - C:WINDOWSsystem32ati2sgag.exe
O23 - Service: avast!antivirus - Unknown owner - C:WINDOWSSystem32avast!Antivirus.exe
O23 - Service: Service de transfert intelligent en arrière-plan (BITS) - Unknown owner - C:WINDOWS
O23 - Service: GhostStartService - Symantec Corporation - C:Program FilesSymantecNorton Ghost 2003GhostStartService.exe
O23 - Service: Google Software Updater (gusvc) - Google - C:Program FilesGoogleCommonGoogle UpdaterGoogleUpdaterService.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:Program FilesFichiers communsInstallShieldDriver11Intel 32IDriverT.exe
O23 - Service: MBackMonitor - McAfee - C:Program FilesMcAfeeMBKMBackMonitor.exe
O23 - Service: McAfee SiteAdvisor Service - Unknown owner - C:Program FilesMcAfeeSiteAdvisorMcSACore.exe
O23 - Service: McAfee Services (mcmscsvc) - McAfee, Inc. - C:PROGRA~1McAfeeMSCmcmscsvc.exe
O23 - Service: McAfee Network Agent (McNASvc) - McAfee, Inc. - c:program filesfichiers communsmcafeemnamcnasvc.exe
O23 - Service: McAfee Scanner (McODS) - McAfee, Inc. - C:PROGRA~1McAfeeVIRUSS~1mcods.exe
O23 - Service: McAfee Proxy Service (McProxy) - McAfee, Inc. - c:PROGRA~1FICHIE~1mcafeemcproxymcproxy.exe
O23 - Service: McAfee Real-time Scanner (McShield) - McAfee, Inc. - C:PROGRA~1McAfeeVIRUSS~1mcshield.exe
O23 - Service: McAfee SystemGuards (McSysmon) - McAfee, Inc. - C:PROGRA~1McAfeeVIRUSS~1mcsysmon.exe
O23 - Service: McAfee Personal Firewall Service (MpfService) - McAfee, Inc. - C:Program FilesMcAfeeMPFMPFSrv.exe
O23 - Service: McAfee SpamKiller Service (MSK80Service) - McAfee, Inc. - C:Program FilesMcAfeeMSKMskSrver.exe
O23 - Service: Sandra Service (SandraTheSrv) - SiSoftware - D:Program FilesSiSoftwareSiSoftware Sandra Lite 2005.SR1RpcSandraSrv.exe
O23 - Service: sopidkc Service (sopidkc) - Unknown owner - C:WINDOWSsystem32sopidkc.exe
O23 - Service: Mises à jour automatiques (wuauserv) - Unknown owner - C:WINDOWS
--
End of file - 7253 bytes
C'est incompréhensible pour moi ...
Merci de votre aide pour la suite des actions à mener