J'ai reformaté mon PC il y a 15 jours et réinstallé Ewido + Kaspersky, je croyais être débarrassé définitivement des trojans mais il y en a un qui est réapparu , j'ignore de quelle façon, comment le localiser et le supprimer ?  
je joins mon log, merçi de me dire quelles lignes sont suspectes ?  
 
Logfile of HijackThis v1.99.1
Scan saved at 12:39:00, on 18/09/2006
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)
 
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\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus 6.0\avp.exe
C:\Program Files\ewido anti-spyware 4.0\guard.exe
C:\WINDOWS\System32\nvsvc32.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\SOUNDMAN.EXE
C:\WINDOWS\AGRSMMSG.exe
C:\Program Files\Launch Manager\QtDTAcer.EXE
C:\Program Files\Synaptics\SynTP\SynTPLpr.exe
C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus 6.0\avp.exe
C:\Program Files\NETGEAR\WG511\Utility\WG511WLU.exe
C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_S4I0K2.EXE
C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_S4I0K2.EXE
C:\Program Files\e-Carte Bleue\LCL\e-Carte Bleue VISA Cleo\ECB-CLEO.exe
C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe
C:\Program Files\Java\jre1.5.0_06\bin\jusched.exe
C:\Program Files\Messenger\MSMSGS.EXE
C:\Program Files\MSN Messenger\MsnMsgr.Exe
C:\DOCUME~1\PHILIP~1\LOCALS~1\Temp\Répertoire temporaire 1 pour hijackthis.zip\HijackThis.exe
 
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = C:\Program Files\Copernic 2001 Pro\Search Bar.htm
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://runonce.msn.com/?v=msgrv75
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://global.acer.com/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = C:\Program Files\Copernic 2001 Pro\Search Bar.htm
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: Yahoo! Toolbar Helper - {02478D38-C3F9-4EFB-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 5.0\Reader\ActiveX\AcroIEHelper.ocx
O2 - BHO: e-Carte Bleue Browser Helper Object - {2E03C0FD-4C48-43A7-9A54-00240C70FF16} - C:\WINDOWS\system32\BhoECart.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O2 - BHO: ST - {9394EDE7-C8B5-483E-8773-474BF36AF6E4} - C:\Program Files\MSN Apps\ST\01.03.0000.1005\en-xu\stmain.dll
O2 - BHO: MSNToolBandBHO - {BDBD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Program Files\MSN Apps\MSN Toolbar\01.02.5000.1021\fr\msntb.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O3 - Toolbar: MSN - {BDAD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Program Files\MSN Apps\MSN Toolbar\01.02.5000.1021\fr\msntb.dll
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [AGRSMMSG] AGRSMMSG.exe
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\System32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [LManager] C:\Program Files\Launch Manager\QtDTAcer.EXE
O4 - HKLM\..\Run: [SynTPLpr] C:\Program Files\Synaptics\SynTP\SynTPLpr.exe
O4 - HKLM\..\Run: [SynTPEnh] C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM\..\Run: [kav] "C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus 6.0\avp.exe"
O4 - HKLM\..\Run: [WG511WLU] C:\Program Files\NETGEAR\WG511\Utility\WG511WLU.exe
O4 - HKLM\..\Run: [EPSON Stylus Photo RX500 (Copie 1)] C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_S4I0K2.EXE /P34 "EPSON Stylus Photo RX500 (Copie 1)" /O6 "USB001" /M "Stylus Photo RX500"
O4 - HKLM\..\Run: [EPSON Stylus Photo RX500] C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_S4I0K2.EXE /P24 "EPSON Stylus Photo RX500" /O5 "LPT1:" /M "Stylus Photo RX500"
O4 - HKLM\..\Run: [eCarteBleue-CLEO] "C:\Program Files\e-Carte Bleue\LCL\e-Carte Bleue VISA Cleo\ECB-CLEO.exe"  /dontopenmycards
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe"  -osboot
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\jre1.5.0_06\bin\jusched.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\MSMSGS.EXE" /background
O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O8 - Extra context menu item: Chercher avec Copernic 2001 - C:\Program Files\Copernic 2001 Pro\Search Extension.htm
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O9 - Extra button: Antivirus Internet - {1F460357-8A94-4D71-9CA3-AA4ACF32ED8E} - C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus 6.0\scieplugin.dll
O9 - Extra button: (no name) - {2A465934-E5F0-11D2-91B5-00104B9C4765} - C:\Program Files\Copernic 2001 Pro\Copernic.exe
O9 - Extra 'Tools' menuitem: Lancer Copernic 2001 - {2A465934-E5F0-11D2-91B5-00104B9C4765} - C:\Program Files\Copernic 2001 Pro\Copernic.exe
O9 - Extra button: Copernic 2001 - {2A465936-E5F0-11D2-91B5-00104B9C4765} - C:\Program Files\Copernic 2001 Pro\Copernic.exe
O9 - Extra button: Traduire - {99EFB53C-C965-43CF-9F45-52242D134187} - file://C:\Program Files\Copernic 2001 Pro\Translate.htm
O9 - Extra 'Tools' menuitem: &Traduire avec Gist-In-Time - {99EFB53C-C965-43CF-9F45-52242D134187} - file://C:\Program Files\Copernic 2001 Pro\Translate.htm
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=http://global.acer.com/
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - "C:\PROGRA~1\MSNMES~1\msgrapp.dll" (file missing)
O20 - Winlogon Notify: klogon - C:\WINDOWS\System32\klogon.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: Kaspersky Anti-Virus 6.0 (AVP) - Kaspersky Lab - C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus 6.0\avp.exe
O23 - Service: ewido anti-spyware 4.0 guard - Anti-Malware Development a.s. - C:\Program Files\ewido anti-spyware 4.0\guard.exe
O23 - Service: NVIDIA Driver Helper Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\System32\nvsvc32.exe
 

alors ?