comparsa questa strana icona sul desktop e non so a che programma appartiene o se un virus.
Non cliccabile ma la posso spostare in qualsiasi parte dello schermo.



Ho fatto le scansioni con malwarebytes e avira ma non trova niente, questo il log hijackthis
Spoiler:
Logfile of Trend Micro HijackThis v2.0.5
Scan saved at 11:58:57, on 24/01/2015
Platform: Windows 7 SP1 (WinNT 6.00.3505)
MSIE: Internet Explorer v9.00 (9.00.8112.16421)

FIREFOX: 35.0 (x86 it)
Boot mode: Normal

Running processes:
C:\Program Files (x86)\Avira\AntiVir Desktop\avgnt.exe
C:\Program Files (x86)\Mozilla Firefox\firefox.exe
C:\Program Files (x86)\Mozilla Firefox\plugin-container.exe
C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerPlugin_16_0_ 0_257.exe
C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerPlugin_16_0_ 0_257.exe
C:\Users\Daedalus\Downloads\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 = about:blank
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 = about:blank
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
O4 - HKLM\..\Run: [avgnt] "C:\Program Files (x86)\Avira\AntiVir Desktop\avgnt.exe" /min
O4 - HKCU\..\RunOnce: [FlashPlayerUpdate] C:\Windows\SysWOW64\Macromed\Flash\FlashUtil32_16_0_0_257_ Plugin.exe -update plugin
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-1-5-19-{ED1FC765-E35E-4C3D-BF15-2C2B11260CE4}-0\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /autoRun (User '?')
O4 - HKUS\S-1-5-19-{ED1FC765-E35E-4C3D-BF15-2C2B11260CE4}-0\..\RunOnce: [mctadmin] C:\Windows\System32\mctadmin.exe (User '?')
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')
O4 - HKUS\S-1-5-20-{ED1FC765-E35E-4C3D-BF15-2C2B11260CE4}-0\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /autoRun (User '?')
O4 - HKUS\S-1-5-20-{ED1FC765-E35E-4C3D-BF15-2C2B11260CE4}-0\..\RunOnce: [mctadmin] C:\Windows\System32\mctadmin.exe (User '?')
O4 - HKUS\S-1-5-21-1009853277-2306729546-1169807571-1001-{ED1FC765-E35E-4C3D-BF15-2C2B11260CE4}-0\..\RunOnce: [FlashPlayerUpdate] C:\Windows\SysWOW64\Macromed\Flash\FlashUtil32_16_0_0_257_ Plugin.exe -update plugin (User '?')
O4 - HKUS\S-1-5-21-1009853277-2306729546-1169807571-1003\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /autoRun (User 'UpdatusUser')
O4 - HKUS\S-1-5-21-1009853277-2306729546-1169807571-1003\..\RunOnce: [mctadmin] C:\Windows\System32\mctadmin.exe (User 'UpdatusUser')
O11 - Options group: [ACCELERATED_GRAPHICS] Accelerated graphics
O23 - Service: @%SystemRoot%\system32\Alg.exe,-112 (ALG) - Unknown owner - C:\Windows\System32\alg.exe (file missing)
O23 - Service: Avira Scheduler (AntiVirSchedulerService) - Avira Operations GmbH & Co. KG - C:\Program Files (x86)\Avira\AntiVir Desktop\sched.exe
O23 - Service: Avira Real-Time Protection (AntiVirService) - Avira Operations GmbH & Co. KG - C:\Program Files (x86)\Avira\AntiVir Desktop\avguard.exe
O23 - Service: COMODO Internet Security Helper Service (CmdAgent) - COMODO - C:\Program Files\COMODO\COMODO Internet Security\cmdagent.exe
O23 - Service: COMODO Virtual Service Manager (cmdvirth) - COMODO - C:\Program Files\COMODO\COMODO Internet Security\cmdvirth.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: @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: NVIDIA Display Driver Service (nvsvc) - Unknown owner - C:\Windows\system32\nvvsvc.exe (file missing)
O23 - Service: NVIDIA Update Service Daemon (nvUpdatusService) - NVIDIA Corporation - C:\Program Files (x86)\NVIDIA Corporation\NVIDIA Update Core\daemonu.exe
O23 - Service: @%systemroot%\system32\psbase.dll,-300 (ProtectedStorage) - 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: @%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: @%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: @%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 - 6440 bytes