Ciao p2,ho fatto la scansione con mb e trovato questi:

File rilevati: 3
C:\Users\xxxxxx\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\96DZ0YBN\SearchIndexer[1].exe (Trojan.BitCoinMiner) ->
Spostato in quarantena ed eliminato con successo.
C:\Users\xxxxxx\AppData\Local\Temp\nsmEF8E.tmp\OCSetupHlp.dll (PUP.Optional.OpenCandy) ->
Spostato in quarantena ed eliminato con successo.
C:\Users\xxxxxx\AppData\Roaming\Mozilla\Firefox\Profiles\rvw8zstp.default\indexedDB
\https+++mega.co.nz\idb\37195885721938706776306\1 (Trojan.Agent.rfk) -> Spostato in quarantena ed eliminato con successo.

mentre stavo finendo di scrivere questo post mb mi ha bloccato e spostato in quarantena il Trojan.BitCoinMiner,nonostate lo avessi eliminato ed riavviato il pc.

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Fatta scasione in modalità provvisoria e normale eliminato tutto anche manualmente,ma il fetecchione si ripresenta sempre.
Ecco la cartella dove si annida:

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fatto tutte le operazioni.Rifatta l'ultima scansione con mb non ha rilevato nulla.

Ecco il log:

Logfile of Trend Micro HijackThis v2.0.4
Scan saved at 16.40.00, on 19/08/2013
Platform: Unknown Windows (WinNT 6.02.1008)
MSIE: Internet Explorer v10.0 (10.00.9200.16660)
Boot mode: Normal

Running processes:
C:\Program Files (x86)\Malwarebytes' Anti-Malware\mbamgui.exe
C:\Users\xxxxxxx\Downloads\HiJackThis.exe
C:\Windows\SysWOW64\DllHost.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://go.microsoft.com/fwlink/p/?LinkId=255141
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/p/?LinkId=255141
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/p/?LinkId=255141
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page = C:\Windows\SysWOW64\blank.htm
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
F2 - REG:system.ini: UserInit=userinit.exe,
O2 - BHO: WsSVRIEHelper - {65DEE40A-3E93-4cae-9F98-B8E06DCEE2BF} - C:\Program Files (x86)\Wondershare\Video Converter Ultimate\SVRIEPlugin.dll
O2 - BHO: Adobe Acrobat Create PDF Toolbar Helper - {AE7CD045-E861-484f-8273-0445EE161910} - C:\Program Files (x86)\Common Files\Adobe\Acrobat\WCIEActiveX\AcroIEFavClient.dll
O2 - BHO: SmartSelect - {F4971EE7-DAA0-4053-9964-665D8EE6A077} - C:\Program Files (x86)\Common Files\Adobe\Acrobat\WCIEActiveX\AcroIEFavClient.dll
O3 - Toolbar: Adobe Acrobat Create PDF Toolbar - {47833539-D0C5-4125-9FA8-0819E2EAAC93} - C:\Program Files (x86)\Common Files\Adobe\Acrobat\WCIEActiveX\AcroIEFavClient.dll
O4 - HKLM\..\Run: [SwitchBoard] C:\Program Files (x86)\Common Files\Adobe\SwitchBoard\SwitchBoard.exe
O4 - HKLM\..\Run: [AdobeCS5ServiceManager] "C:\Program Files (x86)\Common Files\Adobe\CS5ServiceManager\CS5ServiceManager.exe" -launchedbylogin
O4 - HKLM\..\Run: [StartCCC] "C:\Program Files (x86)\ATI Technologies\ATI.ACE\Core-Static\CLIStart.exe" MSRun
O4 - HKLM\..\Run: [Adobe ARM] "C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\AdobeARM.exe"
O4 - HKLM\..\Run: [Acrobat Assistant 8.0] "C:\Program Files (x86)\Adobe\Acrobat 11.0\Acrobat\Acrotray.exe"
O4 - HKLM\..\Run: [LifeCam] "C:\Program Files (x86)\Microsoft LifeCam\LifeExp.exe"
O4 - HKLM\..\Run: [TrueImageMonitor.exe] "C:\Program Files (x86)\Acronis\TrueImageHome\TrueImageMonitor.exe"
O4 - HKLM\..\Run: [AcronisTibMounterMonitor] C:\Program Files (x86)\Common Files\Acronis\TibMounter\TibMounterMonitor.exe
O4 - HKCU\..\Run: [RocketDock] "D:\PORTABILI\PortableApps\RocketDock\RocketDock.exe"
O4 - HKCU\..\Run: [SkyDrive] "C:\Users\camilla\AppData\Local\Microsoft\SkyDrive\SkyDrive.exe" /background
O4 - HKCU\..\Run: [DeskDriveStartup] C:\Program Files (x86)\Blue Onion Software\DeskDrive\DeskDrive.exe
O4 - HKCU\..\RunOnce: [Uninstall C:\Users\camilla\AppData\Local\Microsoft\SkyDrive\16.4.6013.0910\amd64] C:\Windows\system32\cmd.exe /q /c rmdir /s /q "C:\Users\camilla\AppData\Local\Microsoft\SkyDrive\16.4.6013.0910\amd64"
O4 - HKCU\..\RunOnce: [Uninstall C:\Users\camilla\AppData\Local\Microsoft\SkyDrive\17.0.2011.0627_2\amd64] C:\Windows\system32\cmd.exe /q /c rmdir /s /q "C:\Users\camilla\AppData\Local\Microsoft\SkyDrive\17.0.2011.0627_2\amd64"
O4 - Startup: YoWindow.lnk = C:\Program Files (x86)\YoWindow\yowindow.exe
O4 - Global Startup: CodecPackUpdateChecker.lnk = C:\Windows\SysWOW64\C2MP\UpdateChecker.exe
O8 - Extra context menu item: Aggiungi a PDF esistente - res://C:\Program Files (x86)\Common Files\Adobe\Acrobat\WCIEActiveX\AcroIEFavClient.dll/AcroIEAppend.html
O8 - Extra context menu item: Aggiungi destinazione link a PDF esistente - res://C:\Program Files (x86)\Common Files\Adobe\Acrobat\WCIEActiveX\AcroIEFavClient.dll/AcroIEAppendSelLinks.html
O8 - Extra context menu item: Converti destinazione link in Adobe PDF - res://C:\Program Files (x86)\Common Files\Adobe\Acrobat\WCIEActiveX\AcroIEFavClient.dll/AcroIECaptureSelLinks.html
O8 - Extra context menu item: Converti in Adobe PDF - res://C:\Program Files (x86)\Common Files\Adobe\Acrobat\WCIEActiveX\AcroIEFavClient.dll/AcroIECapture.html
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~2\MICROS~4\Office12\REFIEBAR.DLL
O11 - Options group: [ACCELERATED_GRAPHICS] Accelerated graphics
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~2\COMMON~1\Skype\SKYPE4~1.DLL
O18 - Protocol: wlpg - {E43EF6CD-A37A-4A9B-9E6F-83F89B8E6324} - C:\Program Files (x86)\Windows Live\Photo Gallery\AlbumDownloadProtocolHandler.dll
O23 - Service: Acronis Scheduler2 Service (AcrSch2Svc) - Acronis - C:\Program Files (x86)\Common Files\Acronis\Schedule2\schedul2.exe
O23 - Service: Adobe Acrobat Update Service (AdobeARMservice) - Adobe Systems Incorporated - C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\armsvc.exe
O23 - Service: Adobe Flash Player Update Service (AdobeFlashPlayerUpdateSvc) - Adobe Systems Incorporated - C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe
O23 - Service: Acronis Nonstop Backup Service (afcdpsrv) - Acronis - C:\Program Files (x86)\Common Files\Acronis\CDP\afcdpsrv.exe
O23 - Service: Ashampoo HDD Control 2 Service (AHDDC2) - Unknown owner - C:\Program Files (x86)\Ashampoo\Ashampoo HDD Control 2\AHDDC2_Service.exe
O23 - Service: @%SystemRoot%\system32\Alg.exe,-112 (ALG) - Unknown owner - C:\Windows\System32\alg.exe (file missing)
O23 - Service: AMD External Events Utility - Unknown owner - C:\Windows\system32\atiesrxx.exe (file missing)
O23 - Service: Defragmentation-Service (DfSdkS) - mst software GmbH, Germany - C:\Program Files (x86)\Ashampoo\Ashampoo HDD Control 2\DfSdkS64.exe
O23 - Service: @%SystemRoot%\system32\efssvc.dll,-100 (EFS) - Unknown owner - C:\Windows\System32\lsass.exe (file missing)
O23 - Service: @%systemroot%\system32\fxsresm.dll,-118 (Fax) - Unknown owner - C:\Windows\system32\fxssvc.exe (file missing)
O23 - Service: @keyiso.dll,-100 (KeyIso) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: MBAMScheduler - Malwarebytes Corporation - C:\Program Files (x86)\Malwarebytes' Anti-Malware\mbamscheduler.exe
O23 - Service: MBAMService - Malwarebytes Corporation - C:\Program Files (x86)\Malwarebytes' Anti-Malware\mbamservice.exe
O23 - Service: @comres.dll,-2797 (MSDTC) - Unknown owner - C:\Windows\System32\msdtc.exe (file missing)
O23 - Service: @%SystemRoot%\System32\netlogon.dll,-102 (Netlogon) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: @%systemroot%\system32\Locator.exe,-2 (RpcLocator) - Unknown owner - C:\Windows\system32\locator.exe (file missing)
O23 - Service: @%SystemRoot%\system32\samsrv.dll,-1 (SamSs) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: Skype Updater (SkypeUpdate) - Skype Technologies - C:\Program Files (x86)\Skype\Updater\Updater.exe
O23 - Service: @%SystemRoot%\system32\snmptrap.exe,-3 (SNMPTRAP) - Unknown owner - C:\Windows\System32\snmptrap.exe (file missing)
O23 - Service: @%systemroot%\system32\spoolsv.exe,-1 (Spooler) - Unknown owner - C:\Windows\System32\spoolsv.exe (file missing)
O23 - Service: @%SystemRoot%\system32\sppsvc.exe,-101 (sppsvc) - Unknown owner - C:\Windows\system32\sppsvc.exe (file missing)
O23 - Service: SwitchBoard - Adobe Systems Incorporated - C:\Program Files (x86)\Common Files\Adobe\SwitchBoard\SwitchBoard.exe
O23 - Service: Acronis Sync Agent Service (syncagentsrv) - Acronis - C:\Program Files (x86)\Common Files\Acronis\SyncAgent\syncagentsrv.exe
O23 - Service: @%SystemRoot%\system32\ui0detect.exe,-101 (UI0Detect) - Unknown owner - C:\Windows\system32\UI0Detect.exe (file missing)
O23 - Service: @%SystemRoot%\system32\vaultsvc.dll,-1003 (VaultSvc) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: @%SystemRoot%\system32\vds.exe,-100 (vds) - Unknown owner - C:\Windows\System32\vds.exe (file missing)
O23 - Service: @%systemroot%\system32\vssvc.exe,-102 (VSS) - Unknown owner - C:\Windows\system32\vssvc.exe (file missing)
O23 - Service: @%systemroot%\system32\wbengine.exe,-104 (wbengine) - Unknown owner - C:\Windows\system32\wbengine.exe (file missing)
O23 - Service: @%ProgramFiles%\Windows Defender\MpAsDesc.dll,-310 (WinDefend) - Unknown owner - C:\Program Files (x86)\Windows Defender\MsMpEng.exe (file missing)
O23 - Service: @%Systemroot%\system32\wbem\wmiapsrv.exe,-110 (wmiApSrv) - Unknown owner - C:\Windows\system32\wbem\WmiApSrv.exe (file missing)
O23 - Service: @%PROGRAMFILES%\Windows Media Player\wmpnetwk.exe,-101 (WMPNetworkSvc) - Unknown owner - C:\Program Files (x86)\Windows Media Player\wmpnetwk.exe (file missing)

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End of file - 9150 bytes

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Grazie p2 gentilissimo.

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