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pc lento suspeita de virus


jaykhyl

Pergunta

ola, sou novo aki, o negocio é o seguinte utilizo o win 7 rc e de forma excelente ate q um dia apareceu um tal de dllhost.exe usando 100% da cpu, eu fecho o processo e fica normal mas de vez em quando ele volta. A pergunta é, serah um virus ou algo assim.

Vai o log do hijackthis

Logfile of Trend Micro HijackThis v2.0.2

Scan saved at 21:43:47, on 30/07/2009

Platform: Unknown Windows (WinNT 6.01.3004)

MSIE: Internet Explorer v8.00 (8.00.7100.0000)

Boot mode: Normal

Running processes:

C:\Windows\system32\Dwm.exe

C:\Windows\Explorer.EXE

C:\Windows\system32\taskhost.exe

C:\Windows\system32\taskeng.exe

C:\Program Files\IObit\Advanced SystemCare 3\AWC.exe

C:\Program Files\Alwil Software\Avast4\ashDisp.exe

C:\Program Files\Net Studio\USB FireWall\USB FireWall.exe

C:\Program Files\USB Disk Security\USBGuard.exe

C:\Program Files\Java\jre6\bin\jusched.exe

C:\Windows\System32\rundll32.exe

C:\Program Files\iTunes\iTunesHelper.exe

C:\Program Files\Lavasoft\Ad-Aware\AAWTray.exe

C:\Program Files\Windows Sidebar\sidebar.exe

C:\Program Files\Ares\Ares.exe

C:\Windows\system32\taskmgr.exe

C:\Program Files\Opera\opera.exe

C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

C:\Windows\system32\SearchFilterHost.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = about:blank

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/?LinkId=69157

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft.com/fwlink/?LinkId=54896

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896

R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?LinkId=69157

R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =

R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =

R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,AutoConfigURL = http://localhost:9000/proxy.pac

R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = local

R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =

R3 - URLSearchHook: Barra de Ferramentas do Yahoo! - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll

O2 - BHO: Spybot-S&D IE Protection - {53707962-6F74-2D53-2644-206D7942484F} - C:\Program Files\Spybot - Search & Destroy\SDHelper.dll

O4 - HKLM\..\Run: [avast!] "C:\Program Files\Alwil Software\Avast4\ashDisp.exe"

O4 - HKLM\..\Run: [uSBFW] C:\Program Files\Net Studio\USB FireWall\USB FireWall.exe

O4 - HKLM\..\Run: [uSB Antivirus] C:\Program Files\USB Disk Security\USBGuard.exe

O4 - HKLM\..\Run: [sunJavaUpdateSched] "C:\Program Files\Java\jre6\bin\jusched.exe"

O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\QTTask.exe" -atboottime

O4 - HKLM\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\Windows\system32\NvMcTray.dll,NvTaskbarInit

O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\Windows\system32\NvCpl.dll,NvStartup

O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files\iTunes\iTunesHelper.exe"

O4 - HKLM\..\Run: [bywifi] C:\Program Files\Bywifi\bywifi.exe "-silent"

O4 - HKLM\..\Run: [AdobeCS4ServiceManager] "C:\Program Files\Common Files\Adobe\CS4ServiceManager\CS4ServiceManager.exe" -launchedbylogin

O4 - HKLM\..\Run: [Ad-Watch] C:\Program Files\Lavasoft\Ad-Aware\AAWTray.exe

O4 - HKCU\..\Run: [spybotSD TeaTimer] C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe

O4 - HKCU\..\Run: [sidebar] C:\Program Files\Windows Sidebar\sidebar.exe /autoRun

O4 - HKCU\..\Run: [ares] "C:\Program Files\Ares\Ares.exe" -h

O4 - HKCU\..\Run: [AlcoholAutomount] "C:\Program Files\Alcohol Soft\Alcohol 120\axcmd.exe" /automount

O4 - HKUS\S-1-5-19\..\Run: [sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /autoRun (User 'LOCAL SERVICE')

O4 - HKUS\S-1-5-19\..\RunOnce: [mctadmin] C:\Windows\System32\mctadmin.exe (User 'LOCAL SERVICE')

O4 - HKUS\S-1-5-20\..\Run: [sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /autoRun (User 'NETWORK SERVICE')

O4 - HKUS\S-1-5-20\..\RunOnce: [mctadmin] C:\Windows\System32\mctadmin.exe (User 'NETWORK SERVICE')

O9 - Extra button: (no name) - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\Program Files\Spybot - Search & Destroy\SDHelper.dll

O9 - Extra 'Tools' menuitem: Spybot - Search && Destroy Configuration - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\Program Files\Spybot - Search & Destroy\SDHelper.dll

O10 - Unknown file in Winsock LSP: c:\program files\common files\microsoft shared\windows live\wlidnsp.dll

O10 - Unknown file in Winsock LSP: c:\program files\common files\microsoft shared\windows live\wlidnsp.dll

O13 - Gopher Prefix:

O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe

O23 - Service: avast! Antivirus - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashServ.exe

O23 - Service: avast! Mail Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe

O23 - Service: avast! Web Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe

O23 - Service: Bonjour Service - Apple Inc. - C:\Program Files\Bonjour\mDNSResponder.exe

O23 - Service: FLEXnet Licensing Service - Acresso Software Inc. - C:\Program Files\Common Files\Macrovision Shared\FLEXnet Publisher\FNPLicensingService.exe

O23 - Service: iPod Service - Apple Inc. - C:\Program Files\iPod\bin\iPodService.exe

O23 - Service: Lavasoft Ad-Aware Service - Lavasoft - C:\Program Files\Lavasoft\Ad-Aware\AAWService.exe

O23 - Service: NVIDIA Display Driver Service (nvsvc) - NVIDIA Corporation - C:\Windows\system32\nvvsvc.exe

O23 - Service: Protexis Licensing V2 (PSI_SVC_2) - Protexis Inc. - c:\Program Files\Common Files\Protexis\License Service\PsiService_2.exe

O23 - Service: SBSD Security Center Service (SBSDWSCService) - Safer Networking Ltd. - C:\Program Files\Spybot - Search & Destroy\SDWinSec.exe

O23 - Service: StarWind AE Service (StarWindServiceAE) - Rocket Division Software - C:\Program Files\Alcohol Soft\Alcohol 120\StarWind\StarWindServiceAE.exe

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Obrigado pela ajuda, eu acho q consegui resolver. Tinha passado o avast pelo boot, o adware pro, spyboot e nada de encontrar algo, porem depois eu passei o Malwarebytes e encontrou um trojan q nenhum outro tinha acusado. Pois bem, reiniciei e não apareceu mais o dllhost.exe pegando todo meu processador. Por enquanto ta tudo certo, vamos esperar algum tempo pra confirmar, se ele não voltar ta ok.

Editado por jaykhyl
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