Bonsoir,
 je souhaiterai de l'aide pour interpreter ce rapport et la marche à suivre pour que mon pc et internet ne soit plus ennuyé par des trojan et autre betises.
Merci d'avance de votre aide.
 
 
Logfile of HijackThis v1.98.2
Scan saved at 17:50:53, on 28/11/2004
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\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\System32\nvsvc32.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\System32\pctspk.exe
C:\PROGRA~1\Wanadoo\CnxMon.exe
C:\PROGRA~1\MESSAG~1\StartMessager.exe
C:\Program Files\Wanadoo\taskbaricon.exe
C:\Program Files\ScanSoft\OmniPageSE\opware32.exe
C:\WINDOWS\System32\winmplayers.exe
C:\TBC.exe
C:\WINDOWS\System32\spolserv32.exe
C:\Program Files\ISTsvc\istsvc.exe
C:\Program Files\Internet Optimizer\optimize.exe
C:\program files\180solutions\sais.exe
C:\WINDOWS\System32\ctfmon.exe
C:\Program Files\Free History Eraser\HistoryEraser.exe
C:\PROGRA~1\COMMON~1\tsa\tsm2.exe
C:\Program Files\SAGEM\SAGEM F@st 800-840\dslmon.exe
C:\PROGRA~1\COMMON~1\tsa\ts2.exe
C:\Program Files\Internet Optimizer\actalert.exe
C:\WINDOWS\System32\wuauclt.exe
C:\Program Files\Wanadoo\EspaceWanadoo.exe
C:\Program Files\Wanadoo\ComComp.exe
C:\Program Files\Wanadoo\Watch.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Web_Rebates\WebRebates0.exe
C:\Program Files\Web_Rebates\WebRebates1.exe
C:\Program Files\HijackThis.exe
 
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://www.wanadoo.fr/go/page_recherche/
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://www.couldnotfind.com/search [...] _id=152473
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.wanadoo.fr
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,SearchAssistant = about:blank
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,CustomizeSearch = res://C:\PROGRA~1\Toolbar\toolbar.dll/sa
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://www.couldnotfind.com/search [...] _id=152473
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = about:blank
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch = res://C:\PROGRA~1\Toolbar\toolbar.dll/sa
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page_bak = http://www.wanadoo.fr
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Wanadoo
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =  
R3 - Default URLSearchHook is missing
O2 - BHO: BHObj Class - {00000010-6F7D-442C-93E3-4A4827C2E4C8} - C:\WINDOWS\nem220.dll
O2 - BHO: Yahoo! Companion BHO - {02478D38-C3F9-4efb-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn\ycomp5_3_18_0.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 5.0\Reader\ActiveX\AcroIEHelper.ocx
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: (no name) - {63CF97E8-4133-438a-A831-CC9C6D47D673} - (no file)
O2 - BHO: BHObj Class - {8F4E5661-F99E-4B3E-8D85-0EA71C0748E4} - C:\WINDOWS\wsem302.dll
O2 - BHO: BAHelper Class - {A3FDD654-A057-4971-9844-4ED8E67DBBB8} - C:\Program Files\SideFind\sfbho.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: (no name) - {339BB23F-A864-48C0-A59F-29EA915965EC} - (no file)
O3 - Toolbar: Yahoo! Compagnon - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\ycomp5_3_18_0.dll
O3 - Toolbar: (no name) - {0E1230F8-EA50-42A9-983C-D22ABC2EED3B} - (no file)
O3 - Toolbar: ISTbar - {5F1ABCDB-A875-46c1-8345-B72A4567E486} - C:\PROGRA~1\ISTbar\istbar.dll (file missing)
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE NvQTwk,NvCplDaemon initialize
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [PCTVOICE] pctspk.exe
O4 - HKLM\..\Run: [SiSSetCDfmt] C:\WINDOWS\System32\SetCDfmt.exe
O4 - HKLM\..\Run: [RealTray] C:\Program Files\Real\RealPlayer\RealPlay.exe SYSTEMBOOTHIDEPLAYER
O4 - HKLM\..\Run: [WooCnxMon] C:\PROGRA~1\Wanadoo\CnxMon.exe
O4 - HKLM\..\Run: [MessagerStarter Wanadoo] C:\PROGRA~1\MESSAG~1\StartMessager.exe Messager Wanadoo
O4 - HKLM\..\Run: [autoclk] autoclk.exe
O4 - HKLM\..\Run: [WOOWATCH] C:\PROGRA~1\Wanadoo\Watch.exe
O4 - HKLM\..\Run: [WOOTASKBARICON] C:\Program Files\Wanadoo\taskbaricon.exe
O4 - HKLM\..\Run: [adiras] adiras.exe
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [Overnet] C:\Program Files\Overnet\Overnet.exe -t
O4 - HKLM\..\Run: [Omnipage] C:\Program Files\ScanSoft\OmniPageSE\opware32.exe
O4 - HKLM\..\Run: [Microsoft media] winmplayers.exe
O4 - HKLM\..\Run: [msnmsg] C:\TBC.exe
O4 - HKLM\..\Run: [Print Services] spolserv32.exe
O4 - HKLM\..\Run: [IST Service] C:\Program Files\ISTsvc\istsvc.exe
O4 - HKLM\..\Run: [Internet Optimizer] "C:\Program Files\Internet Optimizer\optimize.exe"
O4 - HKLM\..\Run: [sais] c:\program files\180solutions\sais.exe
O4 - HKLM\..\Run: [tupon] C:\WINDOWS\tupon.exe
O4 - HKLM\..\Run: [WebRebates0] "C:\Program Files\Web_Rebates\WebRebates0.exe"
O4 - HKLM\..\RunServices: [Microsoft media] winmplayers.exe
O4 - HKLM\..\RunServices: [Print Services] spolserv32.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: [SPSTEALT] "C:\Program Files\Free History Eraser\HistoryEraser.exe" /stealt
O4 - HKCU\..\Run: [Tsa2] C:\PROGRA~1\COMMON~1\tsa\tsm2.exe
O4 - Global Startup: DSLMON.lnk = C:\Program Files\SAGEM\SAGEM F@st 800-840\dslmon.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office\OSA9.EXE
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Control Panel present
O8 - Extra context menu item: Web Rebates - file://C:\Program Files\Web_Rebates\Sy1150\Tp1150\scri1150a.htm
O9 - Extra button: SideFind - {10E42047-DEB9-4535-A118-B3F6EC39B807} - C:\Program Files\SideFind\sidefind.dll
O9 - Extra button: (no name) - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - (no file)
O9 - Extra button: Messager Wanadoo - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\PROGRA~1\MESSAG~1\Messager Wanadoo.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\PROGRA~1\MESSAG~1\Messager Wanadoo.exe
O9 - Extra button: Wanadoo - {1462651F-F4BA-4C76-A001-C4284D0FE16E} - http://www.wanadoo.fr (file missing) (HKCU)
O16 - DPF: {084DAC27-6FA3-4F55-9005-033F2F102F5C} (ITPPDiagIE Class) - http://downloads.winwise.fr/Common/npwwg.cab
O16 - DPF: {15AD4789-CDB4-47E1-A9DA-992EE8E6BAD6} - http://public.windupdates.com/get_ [...] 0273a5406f
O16 - DPF: {30528230-99F7-4BB4-88D8-FA1D4F56A2AB} (YInstStarter Class) - http://us.dl1.yimg.com/download.ya [...] st0401.cab
O16 - DPF: {386A771C-E96A-421F-8BA7-32F1B706892F} (Installer Class) - http://www.xxxtoolbar.com/ist/soft [...] egular.cab
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - http://a840.g.akamai.net/7/840/537 [...] scan53.cab
O16 - DPF: {7DBFDA8E-D33B-11D4-9269-00600868E56E} - http://go.securelive.com/speed/WebInstall.dll
O16 - DPF: {9A9307A0-7DA4-4DAF-B042-5009F29E09E1} (ActiveScan Installer Class) - http://www.pandasoftware.com/activescan/as5/asinst.cab
O16 - DPF: {ABB08127-7417-11D4-8566-00500448008D} (Chat Class) - http://downloads.winwise.fr/Common/npchatlax.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{83C931DC-E2AF-4504-B1B3-15D7A217692F}: NameServer = 80.10.246.130 80.10.246.3
 

  Il n'y a pas de recette miracle...
 
Ici, commence par utiliser les outils  
-Ad-Aware SE
-SpyBot
 
et par ajout/suppression de programmes, désinstalle:
Web_Rebates
 
Et poste un nouveau log après ça.

dabord merci pour ta réponse,j'ai fait ce que tu m'as dit:spybote n'a rien trouvré,
adware (52 objets)mais n'a pas réussi à virer ceci:
c:\windows\nem220.dll
 
voilà mon nouveau log:
 
Logfile of HijackThis v1.98.2
Scan saved at 19:01:49, on 28/11/2004
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\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\System32\nvsvc32.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\System32\pctspk.exe
C:\PROGRA~1\Wanadoo\CnxMon.exe
C:\PROGRA~1\MESSAG~1\StartMessager.exe
C:\Program Files\Wanadoo\taskbaricon.exe
C:\Program Files\ScanSoft\OmniPageSE\opware32.exe
C:\WINDOWS\System32\winmplayers.exe
C:\TBC.exe
C:\WINDOWS\System32\spolserv32.exe
C:\WINDOWS\System32\ctfmon.exe
C:\Program Files\Free History Eraser\HistoryEraser.exe
C:\PROGRA~1\COMMON~1\tsa\tsm2.exe
C:\Program Files\SAGEM\SAGEM F@st 800-840\dslmon.exe
C:\PROGRA~1\COMMON~1\tsa\ts2.exe
C:\WINDOWS\System32\wuauclt.exe
C:\Program Files\Wanadoo\EspaceWanadoo.exe
C:\Program Files\Wanadoo\ComComp.exe
C:\Program Files\Wanadoo\Watch.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\HijackThis.exe
 
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://www.wanadoo.fr/go/page_recherche/
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.wanadoo.fr
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,SearchAssistant = about:blank
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,CustomizeSearch = res://C:\PROGRA~1\Toolbar\toolbar.dll/sa
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = about:blank
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch = res://C:\PROGRA~1\Toolbar\toolbar.dll/sa
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page_bak = http://www.wanadoo.fr
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Wanadoo
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =  
R3 - Default URLSearchHook is missing
O2 - BHO: BHObj Class - {00000010-6F7D-442C-93E3-4A4827C2E4C8} - C:\WINDOWS\nem220.dll
O2 - BHO: Yahoo! Companion BHO - {02478D38-C3F9-4efb-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn\ycomp5_3_18_0.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 5.0\Reader\ActiveX\AcroIEHelper.ocx
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: (no name) - {63CF97E8-4133-438a-A831-CC9C6D47D673} - (no file)
O2 - BHO: BAHelper Class - {A3FDD654-A057-4971-9844-4ED8E67DBBB8} - C:\Program Files\SideFind\sfbho.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: (no name) - {339BB23F-A864-48C0-A59F-29EA915965EC} - (no file)
O3 - Toolbar: Yahoo! Compagnon - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\ycomp5_3_18_0.dll
O3 - Toolbar: (no name) - {0E1230F8-EA50-42A9-983C-D22ABC2EED3B} - (no file)
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE NvQTwk,NvCplDaemon initialize
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [PCTVOICE] pctspk.exe
O4 - HKLM\..\Run: [SiSSetCDfmt] C:\WINDOWS\System32\SetCDfmt.exe
O4 - HKLM\..\Run: [RealTray] C:\Program Files\Real\RealPlayer\RealPlay.exe SYSTEMBOOTHIDEPLAYER
O4 - HKLM\..\Run: [WooCnxMon] C:\PROGRA~1\Wanadoo\CnxMon.exe
O4 - HKLM\..\Run: [MessagerStarter Wanadoo] C:\PROGRA~1\MESSAG~1\StartMessager.exe Messager Wanadoo
O4 - HKLM\..\Run: [autoclk] autoclk.exe
O4 - HKLM\..\Run: [WOOWATCH] C:\PROGRA~1\Wanadoo\Watch.exe
O4 - HKLM\..\Run: [WOOTASKBARICON] C:\Program Files\Wanadoo\taskbaricon.exe
O4 - HKLM\..\Run: [adiras] adiras.exe
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [Overnet] C:\Program Files\Overnet\Overnet.exe -t
O4 - HKLM\..\Run: [Omnipage] C:\Program Files\ScanSoft\OmniPageSE\opware32.exe
O4 - HKLM\..\Run: [Microsoft media] winmplayers.exe
O4 - HKLM\..\Run: [msnmsg] C:\TBC.exe
O4 - HKLM\..\Run: [Print Services] spolserv32.exe
O4 - HKLM\..\Run: [sais] c:\program files\180solutions\sais.exe
O4 - HKLM\..\Run: [tupon] C:\WINDOWS\tupon.exe
O4 - HKLM\..\RunServices: [Microsoft media] winmplayers.exe
O4 - HKLM\..\RunServices: [Print Services] spolserv32.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: [SPSTEALT] "C:\Program Files\Free History Eraser\HistoryEraser.exe" /stealt
O4 - HKCU\..\Run: [Tsa2] C:\PROGRA~1\COMMON~1\tsa\tsm2.exe
O4 - Global Startup: DSLMON.lnk = C:\Program Files\SAGEM\SAGEM F@st 800-840\dslmon.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office\OSA9.EXE
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Control Panel present
O9 - Extra button: SideFind - {10E42047-DEB9-4535-A118-B3F6EC39B807} - C:\Program Files\SideFind\sidefind.dll
O9 - Extra button: (no name) - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - (no file)
O9 - Extra button: Messager Wanadoo - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\PROGRA~1\MESSAG~1\Messager Wanadoo.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\PROGRA~1\MESSAG~1\Messager Wanadoo.exe
O9 - Extra button: Wanadoo - {1462651F-F4BA-4C76-A001-C4284D0FE16E} - http://www.wanadoo.fr (file missing) (HKCU)
O16 - DPF: {084DAC27-6FA3-4F55-9005-033F2F102F5C} (ITPPDiagIE Class) - http://downloads.winwise.fr/Common/npwwg.cab
O16 - DPF: {15AD4789-CDB4-47E1-A9DA-992EE8E6BAD6} - http://public.windupdates.com/get_ [...] 0273a5406f
O16 - DPF: {30528230-99F7-4BB4-88D8-FA1D4F56A2AB} (YInstStarter Class) - http://us.dl1.yimg.com/download.ya [...] st0401.cab
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - http://a840.g.akamai.net/7/840/537 [...] scan53.cab
O16 - DPF: {7DBFDA8E-D33B-11D4-9269-00600868E56E} - http://go.securelive.com/speed/WebInstall.dll
O16 - DPF: {9A9307A0-7DA4-4DAF-B042-5009F29E09E1} (ActiveScan Installer Class) - http://www.pandasoftware.com/activescan/as5/asinst.cab
O16 - DPF: {ABB08127-7417-11D4-8566-00500448008D} (Chat Class) - http://downloads.winwise.fr/Common/npchatlax.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{83C931DC-E2AF-4504-B1B3-15D7A217692F}: NameServer = 80.10.246.130 80.10.246.3
 
 
 
 

donc malgrés ce que tu m'as demandé de faire, mon probleme persiste toujours,j'ai toujours une page d'acceuil d'un site obscure au lieu de la mienne et donc à chaque lancement d'Internet de nouveau trojan.
merci pour l'aide que l'on pourra m'apporter.

 
utilise firefox.

Ce n'était qu'un début de nettoyage.
 
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,SearchAssistant = about:blank  
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,CustomizeSearch = res://C:\PROGRA~1\Toolbar\toolbar.dll/sa  
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = about:blank  
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch = res://C:\PROGRA~1\Toolbar\toolbar.dll/sa  
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =  
R3 - Default URLSearchHook is missing  
 
O2 - BHO: BHObj Class - {00000010-6F7D-442C-93E3-4A4827C2E4C8} - C:\WINDOWS\nem220.dll  
O2 - BHO: (no name) - {63CF97E8-4133-438a-A831-CC9C6D47D673} - (no file)  
O2 - BHO: BAHelper Class - {A3FDD654-A057-4971-9844-4ED8E67DBBB8} - C:\Program Files\SideFind\sfbho.dll  
O3 - Toolbar: (no name) - {339BB23F-A864-48C0-A59F-29EA915965EC} - (no file)  
O3 - Toolbar: (no name) - {0E1230F8-EA50-42A9-983C-D22ABC2EED3B} - (no file)  
 
O4 - HKLM\..\Run: [Microsoft media] winmplayers.exe
O4 - HKLM\..\Run: [msnmsg] C:\TBC.exe
O4 - HKLM\..\Run: [Print Services] spolserv32.exe
O4 - HKLM\..\Run: [sais] c:\program files\180solutions\sais.exe  
O4 - HKLM\..\Run: [tupon] C:\WINDOWS\tupon.exe
O4 - HKLM\..\RunServices: [Microsoft media] winmplayers.exe  
O4 - HKLM\..\RunServices: [Print Services] spolserv32.exe  
O4 - HKCU\..\Run: [Tsa2] C:\PROGRA~1\COMMON~1\tsa\tsm2.exe
 
O9 - Extra button: SideFind - {10E42047-DEB9-4535-A118-B3F6EC39B807} - C:\Program Files\SideFind\sidefind.dll  
 
O16 - DPF: {15AD4789-CDB4-47E1-A9DA-992EE8E6BAD6} - http://public.windupdates.com/get_file.php?b [...] 93c3ca494810273a5406f  
 
Ferme tous les programmes, y compris internet explorer.
Lance HijackThis. Coche ces lignes et clique "Fix checked".
 
----------
Redémarre en mode sans échec (en tapotant F8 au démarrage).
Assure-toi que tu as accès aux fichiers cachés.
(explorateur windows->outils->options des dossiers->affichage
""Afficher les fichiers cachés"->coché
"Masquer les extensions.."->décoché)
 
Et supprime les fichiers surlignés.
 
------------
 
Redémarre et poste un nouveau log.
 

merci pour ton aide précieuse, à priori ça a bien marché, pour le fichier toolbar, j'avais 5 fichiers avec ce nom, je les ai tous effacé.
voilà mon log:
 
Logfile of HijackThis v1.98.2
Scan saved at 23:02:26, on 28/11/2004
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\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\System32\nvsvc32.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\System32\pctspk.exe
C:\PROGRA~1\Wanadoo\CnxMon.exe
C:\PROGRA~1\MESSAG~1\StartMessager.exe
C:\Program Files\Wanadoo\taskbaricon.exe
C:\Program Files\ScanSoft\OmniPageSE\opware32.exe
C:\WINDOWS\System32\ctfmon.exe
C:\Program Files\Free History Eraser\HistoryEraser.exe
C:\Program Files\SAGEM\SAGEM F@st 800-840\dslmon.exe
C:\WINDOWS\System32\wuauclt.exe
C:\WINDOWS\System32\wuauclt.exe
C:\Program Files\HijackThis.exe
 
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://www.wanadoo.fr/go/page_recherche/
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.wanadoo.fr
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page_bak = http://www.wanadoo.fr
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Wanadoo
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = localhost
O2 - BHO: Yahoo! Companion BHO - {02478D38-C3F9-4efb-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn\ycomp5_3_18_0.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 5.0\Reader\ActiveX\AcroIEHelper.ocx
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: Yahoo! Compagnon - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\ycomp5_3_18_0.dll
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE NvQTwk,NvCplDaemon initialize
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [PCTVOICE] pctspk.exe
O4 - HKLM\..\Run: [SiSSetCDfmt] C:\WINDOWS\System32\SetCDfmt.exe
O4 - HKLM\..\Run: [RealTray] C:\Program Files\Real\RealPlayer\RealPlay.exe SYSTEMBOOTHIDEPLAYER
O4 - HKLM\..\Run: [WooCnxMon] C:\PROGRA~1\Wanadoo\CnxMon.exe
O4 - HKLM\..\Run: [MessagerStarter Wanadoo] C:\PROGRA~1\MESSAG~1\StartMessager.exe Messager Wanadoo
O4 - HKLM\..\Run: [autoclk] autoclk.exe
O4 - HKLM\..\Run: [WOOWATCH] C:\PROGRA~1\Wanadoo\Watch.exe
O4 - HKLM\..\Run: [WOOTASKBARICON] C:\Program Files\Wanadoo\taskbaricon.exe
O4 - HKLM\..\Run: [adiras] adiras.exe
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [Overnet] C:\Program Files\Overnet\Overnet.exe -t
O4 - HKLM\..\Run: [Omnipage] C:\Program Files\ScanSoft\OmniPageSE\opware32.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: [SPSTEALT] "C:\Program Files\Free History Eraser\HistoryEraser.exe" /stealt
O4 - Global Startup: DSLMON.lnk = C:\Program Files\SAGEM\SAGEM F@st 800-840\dslmon.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office\OSA9.EXE
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Control Panel present
O9 - Extra button: (no name) - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - (no file)
O9 - Extra button: Messager Wanadoo - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\PROGRA~1\MESSAG~1\Messager Wanadoo.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\PROGRA~1\MESSAG~1\Messager Wanadoo.exe
O9 - Extra button: Wanadoo - {1462651F-F4BA-4C76-A001-C4284D0FE16E} - http://www.wanadoo.fr (file missing) (HKCU)
O16 - DPF: {084DAC27-6FA3-4F55-9005-033F2F102F5C} (ITPPDiagIE Class) - http://downloads.winwise.fr/Common/npwwg.cab
O16 - DPF: {30528230-99F7-4BB4-88D8-FA1D4F56A2AB} (YInstStarter Class) - http://us.dl1.yimg.com/download.ya [...] st0401.cab
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - http://a840.g.akamai.net/7/840/537 [...] scan53.cab
O16 - DPF: {7DBFDA8E-D33B-11D4-9269-00600868E56E} - http://go.securelive.com/speed/WebInstall.dll
O16 - DPF: {9A9307A0-7DA4-4DAF-B042-5009F29E09E1} (ActiveScan Installer Class) - http://www.pandasoftware.com/activescan/as5/asinst.cab
O16 - DPF: {ABB08127-7417-11D4-8566-00500448008D} (Chat Class) - http://downloads.winwise.fr/Common/npchatlax.cab
 

Ok. Le log est clean, là.
 
Attention à ceci :

Installe les patchs de sécurité.
 
Quel est ton antivirus?
 
A+!  

je n'ai pas encore d'antivirus...
les patchs de sécurité??? je les trouve sur le site?
 
en tout cas merci pour aide, ma machine revie et moi aussi.

Sur windows update.
 
-----
 
Antivirus gratuit ici:
http://free.grisoft.com/freeweb.ph [...] /us/tpl/v5
 
A+!