[Virus] PC lent malgré désinfection totale

Bonjour à tous, voila j'ai fait l'erreur d'installer beaucoup trop tard avast sur ce pc, et je me suis pris quelques virus. Depuis lors, j'ai fait le grand nettoyage: avast+avg anti-Spyware + CCleaner+ ad-aware +spybot S&D. J'ai ensuite supprimer mes points de restauration système, pour enfin défragmenter.
Malgré tout cela j'ai l'impression que mon pc est toujours ralenti.
Est-il possible que les virus aient fait des dégats que rien ne peut réparer à part un bon vieu formatage?

Si cela peut vous aider, et je vous serais fort reconnaissant si vous pouviez le faire, voici mon rapport hijackthis et mon rapport SmitFraudFix que, je l'avoue, je ne sais pas trop interpréter

Logfile of HijackThis v1.99.1
Scan saved at 20:05:50, on 23/06/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16473)

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\svchost.exe
C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\Program Files\dvd43\dvd43_tray.exe
C:\Program Files\Java\jre1.6.0_01\bin\jusched.exe
C:\Program Files\Fichiers communs\Microsoft Shared\Works Shared\WkUFind.exe
C:\Program Files\MessengerPlus! 3\MsgPlus.exe
C:\Program Files\QuickTime\qttask.exe
C:\Program Files\HP\HP Software Update\HPWuSchd2.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\avgas.exe
C:\Program Files\Messenger\msmsgs.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\guard.exe
C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
C:\Program Files\Softissimo\Lexibase Collins FE\exe\l-express.exe
C:\Program Files\Fichiers communs\Microsoft Shared\VS7Debug\mdm.exe
C:\WINDOWS\system32\slserv.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\Program Files\HP\Digital Imaging\bin\hpqSTE08.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Windows NT\Accessoires\wordpad.exe
C:\Documents and Settings\Bary\Bureau\check virus\scanner.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://google.huddi.com
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: Yahoo! Toolbar avec bloqueur de fenêtres pop-up - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O1 - Hosts: Copyright (c) 1993-1999 Microsoft Corp.
O2 - BHO: Yahoo! Toolbar Helper - {02478D38-C3F9-4EFB-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {549B5CA7-4A86-11D7-A4DF-000874180BB3} - (no file)
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_01\bin\ssv.dll
O2 - BHO: (no name) - {FDD3B846-8D59-4ffb-8758-209B6AD74ACC} - (no file)
O3 - Toolbar: Yahoo! Toolbar avec bloqueur de fenêtres pop-up - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O4 - HKLM\..\Run: [ATIModeChange] Ati2mdxx.exe
O4 - HKLM\..\Run: [ATIPTA] C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [dvd43] C:\Program Files\dvd43\dvd43_tray.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.6.0_01\bin\jusched.exe"
O4 - HKLM\..\Run: [Microsoft Works Update Detection] C:\Program Files\Fichiers communs\Microsoft Shared\Works Shared\WkUFind.exe
O4 - HKLM\..\Run: [MessengerPlus3] "C:\Program Files\MessengerPlus! 3\MsgPlus.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [HP Software Update] C:\Program Files\HP\HP Software Update\HPWuSchd2.exe
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [AME_CSA] rundll32 amecsa.cpl,RUN_DLL
O4 - HKLM\..\Run: [RAS2000] C:\WINDOWS\system32\Ras2000.exe
O4 - HKLM\..\Run: [!AVG Anti-Spyware] "C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\avgas.exe" /minimized
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
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: [updateMgr] "C:\Program Files\Adobe\Acrobat 7.0\Reader\AdobeUpdateManager.exe" AcRdB7_0_8 -reboot 1
O4 - HKCU\..\Run: [Steam] C:\Program Files\Valve\Steam\Steam.exe -silent
O4 - Global Startup: HP Digital Imaging Monitor.lnk = C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
O4 - Global Startup: L-Express.lnk = C:\Program Files\Softissimo\Lexibase Collins FE\exe\l-express.exe
O4 - Global Startup: Lancement rapide d'Adobe Reader.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O8 - Extra context menu item: &Search - http://kt.bar.need2find.com/KT/menusearch.html?p=KT
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MI1933~1\Office10\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_01\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_01\bin\ssv.dll
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
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
O11 - Options group: [INTERNATIONAL] International*
O16 - DPF: {00B71CFB-6864-4346-A978-C0A14556272C} (Checkers Class) - http://messenger.zone.msn.com/binary/msgrchkr.cab31267.cab
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://download.microsoft.com/download/E/5/6/E5611B10-0D6D-4117-8430-A67417AA88CD/LegitCheckControl.cab
O16 - DPF: {20A60F0D-9AFA-4515-A0FD-83BD84642501} (Checkers Class) - http://messenger.zone.msn.com/binary/msgrchkr.cab56986.cab
O16 - DPF: {2917297F-F02B-4B9D-81DF-494B6333150B} (Minesweeper Flags Class) - http://messenger.zone.msn.com/binary/MineSweeper.cab31267.cab
O16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} (YInstStarter Class) - C:\Program Files\Yahoo!\Common\yinsthelper.dll
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://audrey-kevin.spaces.live.com//PhotoUpload/MsnPUpld.cab
O16 - DPF: {8E0D4DE5-3180-4024-A327-4DFAD1796A8D} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/MessengerStatsClient.cab31267.cab
O16 - DPF: {B38870E4-7ECB-40DA-8C6A-595F0A5519FF} (MsnMessengerSetupDownloadControl Class) - http://messenger.msn.com/download/msnmessengersetupdownloader.cab
O16 - DPF: {C3F79A2B-B9B4-4A66-B012-3EE46475B072} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/MessengerStatsPAClient.cab56907.cab
O16 - DPF: {F6BF0D00-0B2A-4A75-BF7B-F385591623AF} (Solitaire Showdown Class) - http://messenger.zone.msn.com/binary/SolitaireShowdown.cab31267.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{BB12597A-1683-45AA-A2BF-F5F1359D1468}: NameServer = 192.168.0.1
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - "C:\PROGRA~1\MSNMES~1\msgrapp.dll" (file missing)
O18 - Filter: text/html - {2AB289AE-4B90-4281-B2AE-1F4BB034B647} - (no file)
O20 - AppInit_DLLs: MsgPlusLoader.dll
O20 - Winlogon Notify: WgaLogon - C:\WINDOWS\SYSTEM32\WgaLogon.dll
O21 - SSODL: WPDShServiceObj - {AAA288BA-9A4C-45B0-95D7-94D524869DB5} - C:\WINDOWS\system32\WPDShServiceObj.dll
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: Ati HotKey Poller - Unknown owner - C:\WINDOWS\System32\Ati2evxx.exe
O23 - Service: avast! Antivirus - ALWIL Software - 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: AVG Anti-Spyware Guard - Anti-Malware Development a.s. - C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\guard.exe
O23 - Service: MATLAB Server (matlabserver) - Unknown owner - C:\MATLAB7\webserver\bin\win32\matlabserver.exe
O23 - Service: Pml Driver HPZ12 - HP - C:\WINDOWS\system32\HPZipm12.exe
O23 - Service: SmartLinkService (SLService) - - C:\WINDOWS\SYSTEM32\slserv.exe

SmitFraudFix v2.193

Rapport fait à 20:07:08,39, 23/06/2007
Executé à partir de C:\Documents and Settings\Bary\Bureau\check virus\SmitfraudFix
OS: Microsoft Windows XP [version 5.1.2600] - Windows_NT
Le type du système de fichiers est NTFS
Fix executé en mode normal

»»»»»»»»»»»»»»»»»»»»»»»» Process

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\svchost.exe
C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\Program Files\dvd43\dvd43_tray.exe
C:\Program Files\Java\jre1.6.0_01\bin\jusched.exe
C:\Program Files\Fichiers communs\Microsoft Shared\Works Shared\WkUFind.exe
C:\Program Files\MessengerPlus! 3\MsgPlus.exe
C:\Program Files\QuickTime\qttask.exe
C:\Program Files\HP\HP Software Update\HPWuSchd2.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\avgas.exe
C:\Program Files\Messenger\msmsgs.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\guard.exe
C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
C:\Program Files\Softissimo\Lexibase Collins FE\exe\l-express.exe
C:\Program Files\Fichiers communs\Microsoft Shared\VS7Debug\mdm.exe
C:\WINDOWS\system32\slserv.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\Program Files\HP\Digital Imaging\bin\hpqSTE08.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\WINDOWS\system32\cmd.exe

»»»»»»»»»»»»»»»»»»»»»»»» hosts


»»»»»»»»»»»»»»»»»»»»»»»» C:\


»»»»»»»»»»»»»»»»»»»»»»»» C:\WINDOWS


»»»»»»»»»»»»»»»»»»»»»»»» C:\WINDOWS\system


»»»»»»»»»»»»»»»»»»»»»»»» C:\WINDOWS\Web


»»»»»»»»»»»»»»»»»»»»»»»» C:\WINDOWS\system32


»»»»»»»»»»»»»»»»»»»»»»»» C:\WINDOWS\system32\LogFiles


»»»»»»»»»»»»»»»»»»»»»»»» C:\Documents and Settings\Bary


»»»»»»»»»»»»»»»»»»»»»»»» C:\Documents and Settings\Bary\Application Data


»»»»»»»»»»»»»»»»»»»»»»»» Menu Démarrer


»»»»»»»»»»»»»»»»»»»»»»»» C:\DOCUME~1\Bary\Favoris


»»»»»»»»»»»»»»»»»»»»»»»» Bureau


»»»»»»»»»»»»»»»»»»»»»»»» C:\Program Files


»»»»»»»»»»»»»»»»»»»»»»»» Clés corrompues


»»»»»»»»»»»»»»»»»»»»»»»» Eléments du bureau

[HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Desktop\Components\0]
"Source"="About:Home"
"SubscribedURL"="About:Home"
"FriendlyName"="Ma page d'accueil"


»»»»»»»»»»»»»»»»»»»»»»»» Sharedtaskscheduler
!!!Attention, les clés qui suivent ne sont pas forcément infectées!!!

SrchSTS.exe by S!Ri
Search SharedTaskScheduler's .dll


»»»»»»»»»»»»»»»»»»»»»»»» AppInit_DLLs
!!!Attention, les clés qui suivent ne sont pas forcément infectées!!!

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows]
"AppInit_DLLs"="MsgPlusLoader.dll"


»»»»»»»»»»»»»»»»»»»»»»»» Winlogon.System
!!!Attention, les clés qui suivent ne sont pas forcément infectées!!!

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
"System"=""


»»»»»»»»»»»»»»»»»»»»»»»» Rustock



»»»»»»»»»»»»»»»»»»»»»»»» DNS

Description: SiS 900-Based PCI Fast Ethernet Adapter - Miniport d'ordonnancement de paquets
DNS Server Search Order: 192.168.0.1

HKLM\SYSTEM\CCS\Services\Tcpip\..\{BB12597A-1683-45AA-A2BF-F5F1359D1468}: NameServer=192.168.0.1
HKLM\SYSTEM\CS1\Services\Tcpip\..\{BB12597A-1683-45AA-A2BF-F5F1359D1468}: NameServer=192.168.0.1
HKLM\SYSTEM\CS2\Services\Tcpip\..\{BB12597A-1683-45AA-A2BF-F5F1359D1468}: NameServer=192.168.0.1


»»»»»»»»»»»»»»»»»»»»»»»» Recherche infection wininet.dll


»»»»»»»»»»»»»»»»»»»»»»»» Fin


Merci d'avance à tous..