PC ralentit par un svchost.exe

Bonjour,

Mon PC est devenu hyper lent depuis qques tps. En vérifiant ds le gestionnaire de tache, j'ai un processus svchost.exe qui se lance et qui prend 100% de la ressource. Je dois systématiquement terminer ce processus pour revenir à la normal, ms il revient tout le temps.

J'ai fait un scan par Avast et ça n'a rien changé

Qq'un pourrait il me filer un coup de main pour supprimer ce que je pense etre un virus?

Merci d'avance...

J'ai fait une analyse par hijack this :

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 20:19:13, on 01/08/2011
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP3 (6.00.2900.5512)
Boot mode: Normal

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:\Program Files\Alwil Software\Avast5\AvastSvc.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Intel\Intel Matrix Storage Manager\iaanotif.exe
C:\WINDOWS\RTHDCPL.EXE
C:\WINDOWS\system32\hkcmd.exe
C:\WINDOWS\system32\igfxpers.exe
C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
C:\PROGRA~1\LAUNCH~1\LManager.exe
C:\Program Files\Fichiers communs\Java\Java Update\jusched.exe
C:\PROGRA~1\ALWILS~1\Avast5\avastUI.exe
C:\PROGRA~1\WI9130~1\Datamngr\DATAMN~1.EXE
C:\WINDOWS\system32\igfxsrvc.exe
C:\Program Files\HP\HP Software Update\HPWuSchd2.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Windows Live\Messenger\msnmsgr.exe
C:\Program Files\Acer\Acer VCM\AcerVCM.exe
C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
C:\Program Files\OpenOffice.org 3\program\soffice.exe
C:\Program Files\OpenOffice.org 3\program\soffice.bin
C:\Documents and Settings\Le Corronc\Application Data\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\system32\rundll32.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Intel\Intel Matrix Storage Manager\IAANTMon.exe
C:\Program Files\Java\jre6\bin\jqs.exe
C:\WINDOWS\system32\taskmgr.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\igfxext.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Acer\Acer VCM\RS_Service.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Fichiers communs\Microsoft Shared\Windows Live\WLIDSVC.EXE
C:\DOCUME~1\LECORR~1\LOCALS~1\Temp\RtkBtMnt.exe
C:\WINDOWS\system32\wbem\wmiapsrv.exe
C:\Program Files\Fichiers communs\Microsoft Shared\Windows Live\WLIDSvcM.exe
C:\Program Files\HP\Digital Imaging\bin\hpqSTE08.exe
C:\Program Files\HP\Digital Imaging\bin\hpqbam08.exe
C:\Program Files\HP\Digital Imaging\bin\hpqgpc01.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Mozilla Firefox\plugin-container.exe
C:\Program Files\Windows Live\Contacts\wlcomm.exe
C:\Program Files\Acer\Acer VCM\Vc.exe
C:\WINDOWS\system32\svchost.exe
C:\Documents and Settings\Le Corronc\Mes documents\Téléchargements\HiJackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://homepage.acer.com/rdr.aspx?b=ACAW&l=040c&s=0&o=xph&d=0709&m=aspire_one
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://search.conduit.com?SearchSource=10&ctid=CT2542115
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = https://www.01net.com/
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Windows Internet Explorer fourni par 01net.com
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: Softonic_France Toolbar - {4daac69c-cba7-45e2-9bc8-1044483d3352} - C:\Program Files\Softonic_France\prxtbSof0.dll
O2 - BHO: HP Print Enhancer - {0347C33E-8762-4905-BF09-768834316C61} - C:\Program Files\HP\Digital Imaging\Smart Web Printing\hpswp_printenhancer.dll
O2 - BHO: Conduit Engine - {30F9B915-B755-4826-820B-08FBA6BD249D} - C:\Program Files\ConduitEngine\prxConduitEngine.dll
O2 - BHO: Softonic_France - {4daac69c-cba7-45e2-9bc8-1044483d3352} - C:\Program Files\Softonic_France\prxtbSof0.dll
O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)
O2 - BHO: Searchqu Toolbar - {7FF99715-3016-4381-84CE-E4E4C9673020} - C:\PROGRA~1\WI9130~1\ToolBar\SearchquDx.dll
O2 - BHO: Windows Live ID Sign-in Helper - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Fichiers communs\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: SkypeIEPluginBHO - {AE805869-2E5C-4ED4-8F7B-F1F7851A4497} - C:\Program Files\Skype\Toolbars\Internet Explorer\skypeieplugin.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files\Java\jre6\bin\jp2ssv.dll
O2 - BHO: JQSIEStartDetectorImpl - {E7E6F031-17CE-4C07-BC86-EABFE594F69C} - C:\Program Files\Java\jre6\lib\deploy\jqs\ie\jqs_plugin.dll
O2 - BHO: HP Smart BHO Class - {FFFFFFFF-CF4E-4F2B-BDC2-0E72E116A856} - C:\Program Files\HP\Digital Imaging\Smart Web Printing\hpswp_BHO.dll
O3 - Toolbar: (no name) - {66886C4D-B307-4ECA-A228-52CA9B9851A4} - (no file)
O3 - Toolbar: Searchqu Toolbar - {7FF99715-3016-4381-84CE-E4E4C9673020} - C:\PROGRA~1\WI9130~1\ToolBar\SearchquDx.dll
O3 - Toolbar: Softonic_France Toolbar - {4daac69c-cba7-45e2-9bc8-1044483d3352} - C:\Program Files\Softonic_France\prxtbSof0.dll
O4 - HKLM\..\Run: [IAAnotif] C:\Program Files\Intel\Intel Matrix Storage Manager\iaanotif.exe
O4 - HKLM\..\Run: [RTHDCPL] RTHDCPL.EXE
O4 - HKLM\..\Run: [Alcmtr] ALCMTR.EXE
O4 - HKLM\..\Run: [AzMixerSel] C:\Program Files\Realtek\Audio\Drivers\AzMixerSel.exe
O4 - HKLM\..\Run: [IgfxTray] C:\WINDOWS\system32\igfxtray.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\WINDOWS\system32\hkcmd.exe
O4 - HKLM\..\Run: [Persistence] C:\WINDOWS\system32\igfxpers.exe
O4 - HKLM\..\Run: [SynTPEnh] C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM\..\Run: [LManager] C:\PROGRA~1\LAUNCH~1\LManager.exe
O4 - HKLM\..\Run: [IMJPMIG8.1] "C:\WINDOWS\IME\imjp8_1\IMJPMIG.EXE" /Spoil /RemAdvDef /Migration32
O4 - HKLM\..\Run: [MSPY2002] C:\WINDOWS\system32\IME\PINTLGNT\ImScInst.exe /SYNC
O4 - HKLM\..\Run: [PHIME2002ASync] C:\WINDOWS\system32\IME\TINTLGNT\TINTSETP.EXE /SYNC
O4 - HKLM\..\Run: [PHIME2002A] C:\WINDOWS\system32\IME\TINTLGNT\TINTSETP.EXE /IMEName
O4 - HKLM\..\Run: [PLFSetL] C:\WINDOWS\PLFSetL.exe
O4 - HKLM\..\Run: [snp2uvc] rundll32.exe C:\WINDOWS\system32\csnp2uvc.dll,ResetCIDS
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Fichiers communs\Java\Java Update\jusched.exe"
O4 - HKLM\..\Run: [Babylon Client] C:\Program Files\Babylon\Babylon-Pro\Babylon.exe -AutoStart
O4 - HKLM\..\Run: [avast5] C:\PROGRA~1\ALWILS~1\Avast5\avastUI.exe /nogui
O4 - HKLM\..\Run: [asuifpqwycofxt] C:\WINDOWS\System32\regsvr32.exe /s "C:\WINDOWS\system32\vdvisqaqiplpnkx.dll"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [DATAMNGR] C:\PROGRA~1\WI9130~1\Datamngr\DATAMN~1.EXE
O4 - HKLM\..\Run: [HP Software Update] C:\Program Files\HP\HP Software Update\HPWuSchd2.exe
O4 - HKLM\..\Run: [Microsoft Default Manager] "C:\Program Files\Microsoft\Search Enhancement Pack\Default Manager\DefMgr.exe" -resume
O4 - HKLM\..\Run: [FB6BEC19] C:\Documents and Settings\Le Corronc\Application Data\svchost.exe
O4 - HKLM\..\Run: [H5DGJS598963DH] C:\Documents and Settings\Le Corronc\Application Data\Avir\svchost.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [msnmsgr] "C:\Program Files\Windows Live\Messenger\msnmsgr.exe" /background
O4 - HKCU\..\Run: [Whigocalolac] rundll32.exe "C:\WINDOWS\FR3gfa.dll",Startup
O4 - HKCU\..\Run: [5Z3U4G4I5X6G3F7JXBZOJQSGFEOCE] C:\newdnswatch\newdnswatch.exe /q
O4 - HKCU\..\Run: [Skype] "C:\Program Files\Skype\Phone\Skype.exe" /nosplash /minimized
O4 - HKCU\..\Run: [FB6BEC19] C:\Documents and Settings\Le Corronc\Application Data\svchost.exe
O4 - HKCU\..\Run: [H5DGJS598963DH] C:\Documents and Settings\Le Corronc\Application Data\Avir\svchost.exe
O4 - HKLM\..\Policies\Explorer\Run: [FB6BEC19] C:\Documents and Settings\Le Corronc\Application Data\svchost.exe
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVICE RÉSEAU')
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\S-1-5-18\..\Run: [FB6BEC19] C:\Documents and Settings\LocalService\Application Data\svchost.exe (User 'SYSTEM')
O4 - HKUS\S-1-5-18\..\Run: [H5DGJS598963DH] C:\Documents and Settings\LocalService\Application Data\Avir\svchost.exe (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'Default user')
O4 - Startup: OpenOffice.org 3.1.lnk = C:\Program Files\OpenOffice.org 3\program\quickstart.exe
O4 - Global Startup: Acer VCM.lnk = ?
O4 - Global Startup: HP Digital Imaging Monitor.lnk = C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
O8 - Extra context menu item: Add to Google Photos Screensa&ver - res://C:\WINDOWS\system32\GPhotos.scr/200
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office12\EXCEL.EXE/3000
O8 - Extra context menu item: Google Sidewiki... - res://C:\Program Files\Google\Google Toolbar\Component\GoogleToolbarDynamic_mui_en_D183CA64F05FDD98.dll/cmsidewiki.html
O8 - Extra context menu item: Translate this web page with Babylon - res://C:\Program Files\Babylon\Babylon-Pro\Utils\BabylonIEPI.dll/ActionTU.htm
O8 - Extra context menu item: Translate with Babylon - res://C:\Program Files\Babylon\Babylon-Pro\Utils\BabylonIEPI.dll/Action.htm
O9 - Extra button: Ajout Direct - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: &Ajout Direct dans Windows Live Writer - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra button: Skype Plug-In - {898EA8C8-E7FF-479B-8935-AEC46303B9E5} - C:\Program Files\Skype\Toolbars\Internet Explorer\skypeieplugin.dll
O9 - Extra 'Tools' menuitem: Skype Plug-In - {898EA8C8-E7FF-479B-8935-AEC46303B9E5} - C:\Program Files\Skype\Toolbars\Internet Explorer\skypeieplugin.dll
O9 - Extra button: PokerStars.fr - {90EAE591-7E7E-434a-8E28-ECFD00071806} - C:\Program Files\PokerStars.FR\PokerStarsUpdate.exe
O9 - Extra button: Afficher ou masquer l'HP Smart Web Printing - {DDE87865-83C5-48c4-8357-2F5B1AA84522} - C:\Program Files\HP\Digital Imaging\Smart Web Printing\hpswp_BHO.dll
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra button: Translate this web page with Babylon - {F72841F0-4EF1-4df5-BCE5-B3AC8ACF5478} - C:\Program Files\Babylon\Babylon-Pro\Utils\BabylonIEPI.dll (file missing)
O9 - Extra 'Tools' menuitem: Translate this web page with Babylon - {F72841F0-4EF1-4df5-BCE5-B3AC8ACF5478} - C:\Program Files\Babylon\Babylon-Pro\Utils\BabylonIEPI.dll (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
O14 - IERESET.INF: START_PAGE_URL=https://www.01net.com/
O16 - DPF: {E2883E8F-472F-4FB0-9522-AC9BF37916A7} - http://platformdl.adobe.com/NOS/getPlusPlus/1.6/gp.cab
O18 - Protocol: skype-ie-addon-data - {91774881-D725-4E58-B298-07617B9B86A8} - C:\Program Files\Skype\Toolbars\Internet Explorer\skypeieplugin.dll
O20 - AppInit_DLLs: c:\progra~1\wi9130~1\datamngr\datamngr.dll
O21 - SSODL: SwUpdate - {003541A1-3BC0-1B1C-AAF3-040114001C01} - C:\Documents and Settings\All Users\Application Data\Macromedia\SwUpdate\swupdate.dll (file missing)
O23 - Service: avast! Antivirus - AVAST Software - C:\Program Files\Alwil Software\Avast5\AvastSvc.exe
O23 - Service: avast! Mail Scanner - AVAST Software - C:\Program Files\Alwil Software\Avast5\AvastSvc.exe
O23 - Service: avast! Web Scanner - AVAST Software - C:\Program Files\Alwil Software\Avast5\AvastSvc.exe
O23 - Service: Service Google Update (gupdate) (gupdate) - Google Inc. - C:\Program Files\Google\Update\GoogleUpdate.exe
O23 - Service: Service Google Update (gupdatem) (gupdatem) - Google Inc. - C:\Program Files\Google\Update\GoogleUpdate.exe
O23 - Service: Google Software Updater (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: Intel(R) Matrix Storage Event Monitor (IAANTMON) - Intel Corporation - C:\Program Files\Intel\Intel Matrix Storage Manager\IAANTMon.exe
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Sun Microsystems, Inc. - C:\Program Files\Java\jre6\bin\jqs.exe
O23 - Service: NMIndexingService - Unknown owner - C:\Program Files\Fichiers communs\Ahead\Lib\NMIndexingService.exe (file missing)
O23 - Service: Raw Socket Service (RS_Service) - Acer Incorporated - C:\Program Files\Acer\Acer VCM\RS_Service.exe
O23 - Service: PC Tools Security Service (sdCoreService) - Unknown owner - C:\Program Files\PC Tools Security\pctsSvc.exe (file missing)