ciao a tutti
sul noteb. di mio figlio che scarica film e musica malawb ha trovato e rimosso 4 infezioni come da log allegato;
allego anche log di hjt per eventuali altre 'sporcure'.
un grazie anticipato

Malwarebytes Anti-Malware 1.61.0.1400
www.malwarebytes.org

Versione database: v2012.04.13.05

Windows 7 Service Pack 1 x86 NTFS
Internet Explorer 9.0.8112.16421
user :: FMAXNETBOOK [amministratore]

13/04/2012 17:57:32
mbam-log-2012-04-13 (19-16-33).txt

Tipo di scansione: Scansione completa
Opzioni di scansione attive: Memoria | Esecuzione automatica | Registro | File system | Euristica/Extra | Euristica/Shuriken | PUP | PUM
Opzioni di scansione disattivate: P2P
Elementi esaminati: 274578
Tempo impiegato: 59 minuti, 37 secondi

Processi rilevati in memoria: 0
(non sono stati rilevati elementi nocivi)

Moduli di memoria rilevati: 0
(non sono stati rilevati elementi nocivi)

Chiavi di registro rilevate: 0
(non sono stati rilevati elementi nocivi)

Valori di registro rilevati: 0
(non sono stati rilevati elementi nocivi)

Voci rilevate nei dati di registro: 0
(non sono stati rilevati elementi nocivi)

Cartelle rilevate: 0
(non sono stati rilevati elementi nocivi)

File rilevati: 4
C:\Users\user\Downloads\SoftonicDownloader_per_bittorrent.exe (PUP.ToolbarDownloader) -> Nessuna azione intrapresa.
C:\Users\user\Downloads\SoftonicDownloader_per_sharepod.exe (PUP.ToolbarDownloader) -> Nessuna azione intrapresa.
C:\Users\user\Downloads\SoftonicDownloader_per_vlc-media-player.exe (PUP.ToolbarDownloader) -> Nessuna azione intrapresa.
C:\Users\user\Downloads\SoftonicDownloader_per_winrar.exe (PUP.OfferBundler.ST) -> Nessuna azione intrapresa.

(fine)

---

ho cliccato 'rimuovi su malawb.

---

Logfile of Trend Micro HijackThis v2.0.4
Scan saved at 19:21:38, on 13/04/2012
Platform: Windows 7 SP1 (WinNT 6.00.3505)
MSIE: Internet Explorer v9.00 (9.00.8112.16421)
Boot mode: Normal

Running processes:
C:\Windows\system32\taskhost.exe
C:\Windows\system32\taskeng.exe
C:\Windows\system32\Dwm.exe
C:\Windows\Explorer.EXE
C:\Program Files\SAMSUNG\EasySpeedUpManager\EasySpeedUpManager.exe
C:\Program Files\Samsung\Samsung Recovery Solution 4\WCScheduler.exe
C:\Program Files\Samsung\Samsung Update Plus\SUPBackground.exe
C:\Program Files\Samsung\Easy Display Manager\dmhkcore.exe
C:\Program Files\Realtek\Audio\HDA\RtHDVCpl.exe
C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
C:\Windows\System32\igfxtray.exe
C:\Windows\System32\hkcmd.exe
C:\Windows\System32\igfxpers.exe
C:\Windows\system32\igfxsrvc.exe
C:\Program Files\Synaptics\SynTP\SynTPHelper.exe
C:\Program Files\Microsoft Security Client\msseces.exe
C:\Program Files\Windows Sidebar\sidebar.exe
C:\Windows\system32\SearchFilterHost.exe
C:\Windows\system32\igfxext.exe
C:\Program Files\Trend Micro\HiJackThis\HiJackThis.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 = http://www.google.it/
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,ProxyOverride = *.local
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
R3 - URLSearchHook: (no name) - {84FF7BD6-B47F-46F8-9130-01B2696B36CB} - (no file)
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: BittorrentBar_IT - {1d03a978-ac0c-4004-b9fd-9cf361c7bd3f} - C:\Program Files\BittorrentBar_IT\prxtbBitt.dll
O2 - BHO: TBSB01620 - {58124A0B-DC32-4180-9BFF-E0E21AE34026} - C:\Program Files\IMinent Toolbar\tbcore3.dll
O2 - BHO: (no name) - {84FF7BD6-B47F-46F8-9130-01B2696B36CB} - (no file)
O2 - BHO: Windows Live ID Sign-in Helper - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Windows Live Messenger Companion Helper - {9FDDE16B-836F-4806-AB1F-1455CBEFF289} - C:\Program Files\Windows Live\Companion\companioncore.dll
O2 - BHO: IMinent WebBooster - {A09AB6EB-31B5-454C-97EC-9B294D92EE2A} - C:\Program Files\Iminent\Iminent.WebBooster.InternetExplorer.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: SWEETIE - {EEE6C35C-6118-11DC-9C72-001320C79847} - C:\Program Files\SweetIM\Toolbars\Internet Explorer\mgToolbarIE.dll
O3 - Toolbar: SweetPacks Toolbar for Internet Explorer - {EEE6C35B-6118-11DC-9C72-001320C79847} - C:\Program Files\SweetIM\Toolbars\Internet Explorer\mgToolbarIE.dll
O3 - Toolbar: BittorrentBar_IT Toolbar - {1d03a978-ac0c-4004-b9fd-9cf361c7bd3f} - C:\Program Files\BittorrentBar_IT\prxtbBitt.dll
O3 - Toolbar: IMinent Toolbar - {977AE9CC-AF83-45E8-9E03-E2798216E2D5} - C:\Program Files\IMinent Toolbar\tbcore3.dll
O4 - HKLM\..\Run: [RtHDVCpl] C:\Program Files\Realtek\Audio\HDA\RtHDVCpl.exe
O4 - HKLM\..\Run: [SynTPEnh] %ProgramFiles%\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM\..\Run: [UCam_Menu] "C:\Program Files\CyberLink\YouCam\MUITransfer\MUIStartMenu.exe" "C:\Program Files\CyberLink\YouCam" UpdateWithCreateOnce "Software\CyberLink\YouCam\2.0"
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: [MSC] "C:\Program Files\Microsoft Security Client\msseces.exe" -hide -runkey
O4 - HKCU\..\Run: [Sidebar] C:\Program Files\Windows Sidebar\sidebar.exe /autoRun
O4 - HKCU\..\Run: [Google Update] "C:\Users\user\AppData\Local\Google\Update\GoogleUpdate.exe" /c
O4 - HKUS\S-1-5-19\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /autoRun (User 'SERVIZIO LOCALE')
O4 - HKUS\S-1-5-19\..\RunOnce: [mctadmin] C:\Windows\System32\mctadmin.exe (User 'SERVIZIO LOCALE')
O4 - HKUS\S-1-5-20\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /autoRun (User 'SERVIZIO DI RETE')
O4 - HKUS\S-1-5-20\..\RunOnce: [mctadmin] C:\Windows\System32\mctadmin.exe (User 'SERVIZIO DI RETE')
O8 - Extra context menu item: Free YouTube to MP3 Converter - C:\Users\user\AppData\Roaming\DVDVideoSoftIEHelpers\freeyoutubetomp3converter.htm
O9 - Extra button: @C:\Program Files\Windows Live\Companion\companionlang.dll,-600 - {0000036B-C524-4050-81A0-243669A86B9F} - C:\Program Files\Windows Live\Companion\companioncore.dll
O9 - Extra button: @C:\Program Files\Windows Live\Writer\WindowsLiveWriterShortcuts.dll,-1004 - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: @C:\Program Files\Windows Live\Writer\WindowsLiveWriterShortcuts.dll,-1003 - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.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
O11 - Options group: [ACCELERATED_GRAPHICS] Accelerated graphics
O18 - Protocol: sacore - {5513F07E-936B-4E52-9B00-067394E91CC5} - (no file)
O18 - Protocol: wlpg - {E43EF6CD-A37A-4A9B-9E6F-83F89B8E6324} - C:\Program Files\Windows Live\Photo Gallery\AlbumDownloadProtocolHandler.dll
O23 - Service: Apple Mobile Device - Apple Inc. - C:\Program Files\Common Files\Apple\Mobile Device Support\AppleMobileDeviceService.exe
O23 - Service: Servizio Bonjour (Bonjour Service) - Apple Inc. - C:\Program Files\Bonjour\mDNSResponder.exe
O23 - Service: Servizio iPod (iPod Service) - Apple Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: Macrium Reflect Image Mounting Service (ReflectService) - Unknown owner - C:\Program Files\Macrium\Reflect\ReflectService.exe
O23 - Service: Vodafone Mobile Connect Service (VMCService) - Vodafone - C:\Program Files\Vodafone\Vodafone Mobile Connect\Bin\VMCService.exe

--
End of file - 6899 bytes

Ciao.
Il log è a posto.
Malwarebytes ha fatto il suo lavoro.
Cerca di evitare di scaricare software da Softonic.com (o it).
I software, è meglio (se ci sono) scaricarli da Aiutamici, oppure (se non ci sono) dai siti ufficiali.
In questo modo, se imbarchi un virus, sai con chi prendertela.