Bonjour,  
Suite à une infection détectée par avast, j'ai utilisé le logiciel ComboFix dont voici le rapport :  
Merci de m'indiquer la démarche à suivre pour eradiquer définitivement le problème  
Je suis sous vista et pas très doué en informatique  
  
  
ComboFix 11-04-03.03 - utilisateur 04/04/2011  19:14:39.1.1 - x86 
Microsoft® Windows Vista™ Édition Familiale Basique   6.0.6001.1.1252.33.1036.18.958.208 [GMT 2:00] 
Lancé depuis: c:\users\utilisateur\Desktop\sylvain.exe 
AV: avast! Antivirus *Disabled/Updated* {2B2D1395-420B-D5C9-657E-930FE358FC3C} 
SP: avast! Antivirus *Disabled/Updated* {904CF271-6431-DA47-5FCE-A87D98DFB681} 
SP: Windows Defender *Enabled/Updated* {D68DDC3A-831F-4fae-9E44-DA132C1ACF46} 
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((((((((((((((((((((((((((((((((((((   Autres suppressions   )))))))))))))))))))))))))))))))))))))))))))))))) 
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c:\programdata\vlc-1.0.3-win32.exe 
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Une copie infectée de c:\windows\system32\drivers\pciide.sys a été trouvée et désinfectée  
Copie restaurée à partir de - Kitty had a snack  
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(((((((((((((((((((((((((((((   Fichiers créés du 2011-03-04 au 2011-04-04  )))))))))))))))))))))))))))))))))))) 
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2011-04-04 17:34 . 2011-04-04 17:35	--------	d-----w-	c:\users\utilisateur\AppData\Local\temp 
2011-04-04 17:34 . 2011-04-04 17:34	--------	d-----w-	c:\users\Default\AppData\Local\temp 
2011-04-04 15:34 . 2010-11-29 15:42	38224	----a-w-	c:\windows\system32\drivers\mbamswissarmy.sys 
2011-04-04 15:34 . 2011-04-04 15:34	--------	d-----w-	c:\programdata\Malwarebytes 
2011-04-04 15:33 . 2011-04-04 15:45	--------	d-----w-	c:\program files\Malwarebytes' Anti-Malware 
2011-04-04 15:33 . 2010-11-29 15:42	20952	----a-w-	c:\windows\system32\drivers\mbam.sys 
2011-04-03 14:52 . 2011-03-23 08:11	6792528	----a-w-	c:\programdata\Microsoft\Windows Defender\Definition Updates\{37D35C5A-B508-44B7-A2D0-28A15AD7FA29}\mpengine.dll 
2011-04-03 14:40 . 2011-02-23 13:56	371544	----a-w-	c:\windows\system32\drivers\aswSnx.sys 
2011-03-08 23:58 . 2010-12-29 17:41	323072	----a-w-	c:\windows\system32\sbe.dll 
2011-03-08 23:58 . 2010-12-29 17:41	153088	----a-w-	c:\windows\system32\sbeio.dll 
2011-03-08 23:58 . 2010-12-29 17:41	429056	----a-w-	c:\windows\system32\EncDec.dll 
2011-03-08 23:58 . 2010-12-29 17:39	177664	----a-w-	c:\windows\system32\mpg2splt.ax 
2011-03-08 23:58 . 2010-12-17 16:43	2067456	----a-w-	c:\windows\system32\mstscax.dll 
2011-03-08 23:58 . 2010-12-17 15:06	677888	----a-w-	c:\windows\system32\mstsc.exe 
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((((((((((((((((((((((((((((((((((   Compte-rendu de Find3M   )))))))))))))))))))))))))))))))))))))))))))))))) 
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2011-02-23 14:04 . 2010-08-29 12:35	40648	----a-w-	c:\windows\avastSS.scr 
2011-02-23 14:04 . 2008-05-16 07:49	190016	----a-w-	c:\windows\system32\aswBoot.exe 
2011-02-23 13:56 . 2008-05-16 07:49	301528	----a-w-	c:\windows\system32\drivers\aswSP.sys 
2011-02-23 13:55 . 2008-05-16 07:49	49240	----a-w-	c:\windows\system32\drivers\aswTdi.sys 
2011-02-23 13:55 . 2008-05-16 07:49	25432	----a-w-	c:\windows\system32\drivers\aswRdr.sys 
2011-02-23 13:55 . 2008-05-16 07:49	53592	----a-w-	c:\windows\system32\drivers\aswMonFlt.sys 
2011-02-23 13:54 . 2008-05-16 07:49	19544	----a-w-	c:\windows\system32\drivers\aswFsBlk.sys 
2011-02-02 16:11 . 2009-10-03 09:27	222080	------w-	c:\windows\system32\MpSigStub.exe 
2011-01-08 07:50 . 2011-02-10 06:48	34304	----a-w-	c:\windows\system32\atmlib.dll 
2011-01-08 05:57 . 2011-02-10 06:48	292352	----a-w-	c:\windows\system32\atmfd.dll 
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(((((((((((((((((((((((((((((((((   Points de chargement Reg   )))))))))))))))))))))))))))))))))))))))))))))))) 
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*Note* les éléments vides & les éléments initiaux légitimes ne sont pas listés  
REGEDIT4 
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[HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\explorer\shelliconoverlayidentifiers\00avast] 
@="{472083B0-C522-11CF-8763-00608CC02F24}" 
[HKEY_CLASSES_ROOT\CLSID\{472083B0-C522-11CF-8763-00608CC02F24}] 
2011-02-23 14:04	122512	----a-w-	c:\program files\Alwil Software\Avast5\ashShell.dll 
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[HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 
"Sidebar"="c:\program files\Windows Sidebar\sidebar.exe" [2008-01-19 1233920] 
"MsnMsgr"="c:\program files\Windows Live\Messenger\msnmsgr.exe" [2009-07-26 3883856] 
"Logitech Vid"="c:\program files\Logitech\Logitech Vid\vid.exe" [2009-07-16 5458704] 
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[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 
"SoundMAXPnP"="c:\program files\Analog Devices\Core\smax4pnp.exe" [2007-06-16 868352] 
"HP Software Update"="c:\program files\HP\HP Software Update\HPWuSchd2.exe" [2006-12-10 49152] 
"QuickTime Task"="c:\program files\QuickTime\QTTask.exe" [2008-11-04 413696] 
"iTunesHelper"="c:\program files\iTunes\iTunesHelper.exe" [2008-11-20 290088] 
"Adobe Reader Speed Launcher"="c:\program files\Adobe\Reader 8.0\Reader\Reader_sl.exe" [2011-01-22 40368] 
"Adobe ARM"="c:\program files\Common Files\Adobe\ARM\1.0\AdobeARM.exe" [2010-09-21 932288] 
"LogitechQuickCamRibbon"="c:\program files\Logitech\Logitech WebCam Software\LWS.exe" [2009-10-14 2793304] 
"avast5"="c:\program files\Alwil Software\Avast5\avastUI.exe" [2011-02-23 3451496] 
"SunJavaUpdateSched"="c:\program files\Common Files\Java\Java Update\jusched.exe" [2010-05-14 248552] 
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c:\programdata\Microsoft\Windows\Start Menu\Programs\Startup\ 
DSLMON.lnk - c:\program files\SAGEM\SAGEM F@st 800-840\dslmon.exe [2007-6-28 1214032] 
HP Digital Imaging Monitor.lnk - c:\program files\HP\Digital Imaging\bin\hpqtra08.exe [2007-1-2 210520] 
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[HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\policies\system] 
"EnableLUA"= 0 (0x0) 
"EnableUIADesktopToggle"= 0 (0x0) 
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[HKEY_LOCAL_MACHINE\software\microsoft\shared tools\msconfig\startupreg\NeroFilterCheck] 
2006-01-12 13:40	155648	----a-w-	c:\program files\Common Files\Ahead\Lib\NeroCheck.exe 
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[HKEY_LOCAL_MACHINE\software\microsoft\shared tools\msconfig\startupreg\SoundMAXPnP] 
2007-06-16 14:21	868352	----a-w-	c:\program files\Analog Devices\Core\smax4pnp.exe 
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R2 clr_optimization_v4.0.30319_32;Microsoft .NET Framework NGEN v4.0.30319_X86;c:\windows\Microsoft.NET\Framework\v4.0.30319\mscorsvw.exe [2010-03-18 130384] 
R2 ELOADER;General Purpose USB Driver (adildr.sys);c:\windows\system32\Drivers\adildr.sys [2007-01-10 56088] 
R2 gupdate;Service Google Update (gupdate);c:\program files\Google\Update\GoogleUpdate.exe [2010-03-27 136176] 
R3 WPFFontCache_v0400;Cache de police de Windows Presentation Foundation 4.0.0.0;c:\windows\Microsoft.NET\Framework\v4.0.30319\WPF\WPFFontCache_v0400.exe [2010-03-18 753504] 
S1 aswSnx;aswSnx; [x] 
S1 aswSP;aswSP; [x] 
S2 aswFsBlk;aswFsBlk; [x] 
S2 aswMonFlt;aswMonFlt;c:\windows\system32\drivers\aswMonFlt.sys [2011-02-23 53592] 
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[HKEY_LOCAL_MACHINE\software\microsoft\windows nt\currentversion\svchost] 
LocalServiceNoNetwork	REG_MULTI_SZ   	PLA DPS BFE mpssvc 
HPZ12	REG_MULTI_SZ   	Pml Driver HPZ12 Net Driver HPZ12 
hpdevmgmt	REG_MULTI_SZ   	hpqcxs08 hpqddsvc 
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Contenu du dossier 'Tâches planifiées' 
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2011-04-04 c:\windows\Tasks\GoogleUpdateTaskMachineCore.job 
- c:\program files\Google\Update\GoogleUpdate.exe [2010-03-27 10:53] 
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2011-04-04 c:\windows\Tasks\GoogleUpdateTaskMachineUA.job 
- c:\program files\Google\Update\GoogleUpdate.exe [2010-03-27 10:53] 
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2011-04-04 c:\windows\Tasks\User_Feed_Synchronization-{FB13DC28-1BB0-4506-8735-3BC0C7D0F1A2}.job 
- c:\windows\system32\msfeedssync.exe [2008-06-18 07:33] 
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2011-03-13 c:\windows\Tasks\WebReg PSC 1600 series.job 
- c:\program files\HP\Digital Imaging\bin\hpqwrg.exe [2006-12-10 19:36] 
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------- Examen supplémentaire ------- 
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uStart Page = hxxp://www.google.fr/ 
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- - - - ORPHELINS SUPPRIMES - - - - 
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AddRemove-Sismolog Sénior - c:\chrysis\Sismolog\Installe.exe 
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************************************************************************** 
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catchme 0.3.1398 W2K/XP/Vista - rootkit/stealth malware detector by Gmer, GMER - Rootkit Detector and Remover 
Rootkit scan 2011-04-04 19:35 
Windows 6.0.6001 Service Pack 1 NTFS 
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Recherche de processus cachés ...  
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Recherche d'éléments en démarrage automatique cachés ...  
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Recherche de fichiers cachés ...  
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c:\windows\TEMP\TMP00000023F2E26C3ED9929E76 524288 bytes 
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Scan terminé avec succès 
Fichiers cachés: 1 
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************************************************************************** 
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--------------------- CLES DE REGISTRE BLOQUEES --------------------- 
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[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{A483C63A-CDBC-426E-BF93-872502E8144E}] 
@Denied: (A 2) (Everyone) 
@="FlashBroker" 
"LocalizedString"="@c:\\Windows\\system32\\Macromed\\Flash\\FlashUtil10n_ActiveX.exe,-101" 
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[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{A483C63A-CDBC-426E-BF93-872502E8144E}\Elevation] 
"Enabled"=dword:00000001 
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[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{A483C63A-CDBC-426E-BF93-872502E8144E}\LocalServer32] 
@="c:\\Windows\\system32\\Macromed\\Flash\\FlashUtil10n_ActiveX.exe" 
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[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{A483C63A-CDBC-426E-BF93-872502E8144E}\TypeLib] 
@="{FAB3E735-69C7-453B-A446-B6823C6DF1C9}" 
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[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{E3F2C3CB-5EB8-4A04-B22C-7E3B4B6AF30F}] 
@Denied: (A 2) (Everyone) 
@="IFlashBroker4" 
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[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{E3F2C3CB-5EB8-4A04-B22C-7E3B4B6AF30F}\ProxyStubClsid32] 
@="{00020424-0000-0000-C000-000000000046}" 
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[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{E3F2C3CB-5EB8-4A04-B22C-7E3B4B6AF30F}\TypeLib] 
@="{FAB3E735-69C7-453B-A446-B6823C6DF1C9}" 
"Version"="1.0" 
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Heure de fin: 2011-04-04  19:41:48 
ComboFix-quarantined-files.txt  2011-04-04 17:41 
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Avant-CF: 138 134 065 152 octets libres 
Après-CF: 154 968 367 104 octets libres 
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Current=1 Default=1 Failed=0 LastKnownGood=10 Sets=1,2,3,4,5,6,7,8,9,10 
- - End Of File - - 70E4753578168D917CC533B2716F6756