Removendo o vírus NATServ.exe

Olá!

Depois de instalar uma atualização do java, ou pelo menos que dizia ser atualização do java, meu gerenciador de tarefas começou, ao abrir ,fechar após 3 segundos. Rodei o Hijackthis e me deu o seguinte retorno:

Logfile of Trend Micro HijackThis v2.0.5
Scan saved at 15:24:55, on 13/01/2015
Platform: Unknown Windows (WinNT 6.02.1008)
MSIE: Internet Explorer v11.0 (11.00.9600.17416)

FIREFOX: 33.1.1 (x86 pt-BR)
Boot mode: Normal

Running processes:
C:\Users\Anderson\AppData\Roaming\13012015\NATServ.exe
C:\Program Files (x86)\AVG\AVG2015\avgui.exe
C:\WINDOWS\SysWOW64\ctfmon.exe
C:\Program Files (x86)\Windows Media Player\wmplayer.exe
C:\Program Files (x86)\Google\Chrome\Application\chrome.exe
C:\Program Files (x86)\Google\Chrome\Application\chrome.exe
C:\Program Files (x86)\Google\Chrome\Application\chrome.exe
C:\Program Files (x86)\Google\Chrome\Application\chrome.exe
C:\Program Files (x86)\Google\Chrome\Application\chrome.exe
C:\Program Files (x86)\Google\Chrome\Application\chrome.exe
C:\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.sistemaathos.com.br/
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: MSS+ Identifier - {0E8A89AD-95D7-40EB-8D9D-083EF7066A01} - C:\Program Files\McAfee Security Scan\3.8.150\McAfeeMSS_IE.dll
O4 - HKLM\..\Run: [AVG_UI] "C:\Program Files (x86)\AVG\AVG2015\avgui.exe" /TRAYONLY
O4 - HKCU\..\Run: [EPLTarget\P0000000000000000] C:\Windows\system32\spool\DRIVERS\x64\3\E_YATII4E.EXE /EPT "EPLTarget\P0000000000000000" /M "L355 Series"
O4 - HKCU\..\Run: [NATServ.exe] C:\Users\Anderson\AppData\Roaming\13012015\NATServ.exe
O4 - HKUS\S-1-5-21-92493899-3732270125-1410355176-1002\..\RunOnce: [WAB Migrate] %ProgramFiles%\Windows Mail\wab.exe /Upgrade (User 'postgres')
O4 - HKUS\S-1-5-18\..\Run: [EPLTarget\P0000000000000000] C:\WINDOWS\system32\spool\DRIVERS\x64\3\E_YATII4E.EXE /EPT "EPLTarget\P0000000000000000" /M "L355 Series" (User 'SISTEMA')
O4 - HKUS\.DEFAULT\..\Run: [EPLTarget\P0000000000000000] C:\WINDOWS\system32\spool\DRIVERS\x64\3\E_YATII4E.EXE /EPT "EPLTarget\P0000000000000000" /M "L355 Series" (User 'Default user')
O4 - Global Startup: McAfee Security Scan Plus.lnk = C:\Program Files\McAfee Security Scan\3.8.150\SSScheduler.exe
O11 - Options group: [ACCELERATED_GRAPHICS] Accelerated graphics
O23 - Service: Adobe Flash Player Update Service (AdobeFlashPlayerUpdateSvc) - Adobe Systems Incorporated - C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe
O23 - Service: @%SystemRoot%\system32\Alg.exe,-112 (ALG) - Unknown owner - C:\WINDOWS\System32\alg.exe (file missing)
O23 - Service: ASUS Com Service (asComSvc) - Unknown owner - C:\Program Files (x86)\ASUS\AXSP\1.01.02\atkexComSvc.exe
O23 - Service: AVGIDSAgent - AVG Technologies CZ, s.r.o. - C:\Program Files (x86)\AVG\AVG2015\avgidsagent.exe
O23 - Service: Watchdog do AVG (avgwd) - AVG Technologies CZ, s.r.o. - C:\Program Files (x86)\AVG\AVG2015\avgwdsvc.exe
O23 - Service: Intel(R) Content Protection HECI Service (cphs) - Intel Corporation - C:\WINDOWS\SysWow64\IntelCpHeciSvc.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: Serviço do Google Update (gupdate) (gupdate) - Google Inc. - C:\Program Files (x86)\Google\Update\GoogleUpdate.exe
O23 - Service: Serviço do Google Update (gupdatem) (gupdatem) - Google Inc. - C:\Program Files (x86)\Google\Update\GoogleUpdate.exe

O23 - Service: @%SystemRoot%\system32\ieetwcollectorres.dll,-1000 (IEEtwCollectorService) - Unknown owner - C:\WINDOWS\system32\IEEtwCollector.exe (file missing)
O23 - Service: Intel(R) HD Graphics Control Panel Service (igfxCUIService1.0.0.0) - Unknown owner - C:\WINDOWS\system32\igfxCUIService.exe (file missing)
O23 - Service: @keyiso.dll,-100 (KeyIso) - Unknown owner - C:\WINDOWS\system32\lsass.exe (file missing)
O23 - Service: McAfee Security Scan Component Host Service (McComponentHostService) - McAfee, Inc. - C:\Program Files\McAfee Security Scan\3.8.150\McCHSvc.exe
O23 - Service: Mozilla Maintenance Service (MozillaMaintenance) - Mozilla Foundation - C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.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: postgresql-9.0 - PostgreSQL Server 9.0 (postgresql-9.0) - PostgreSQL Global Development Group - C:/Program Files (x86)/PostgreSQL/9.0/bin/pg_ctl.exe
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: @%ProgramFiles%\Windows Defender\MpAsDesc.dll,-320 (WdNisSvc) - Unknown owner - C:\Program Files (x86)\Windows Defender\NisSrv.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 - 7426 bytes
Ao tentar executar o combofix para remover o possível trojan descobri que ele não funciona com windows 8.1. A opção que usei foi o Malwarebytes Anti-Malware. Porém antes dele terminar a execução, ao acessar o site do Banco do Brasil, o meu antivírus detectou o tal trojan. Foi identificado como NATServ.exe. Depois de o antivírus remover para quarentena o tal NATServ e acabar de executar o Malwarebytes Anti-Malware o gerenciador de tarefas voltou a abrir normal e no novo log do HijackThis não faz mais referência ao tal NATServ. Não achei nada sobre esse vírus na internet. Alguém sabe me dizer o que seria esse NATServ?