hoe XP Internet Security 2012 virus verwijderen?

kape · 4 januari 2012

Verwijder volgende vetgedrukte mappen en bestanden manueel :

c:\program files\53D4F

c:\windows\system32\drivers\Cat.DB

En kan je eens meedelen wat er in volgende map zit :

c:\program files\LP

Ga naar Start – Uitvoeren/Zoekopdracht en tik in: sc stop "Planner voor Automatische LiveUpdate"

Druk op Enter.

Ga naar Start – Uitvoeren/Zoekopdracht en tik in: sc delete "Planner voor Automatische LiveUpdate"

Druk op Enter.

Start Hijackthis op. Selecteer “Scan”. Selecteer alleen de items die hieronder zijn genoemd:

O2 - BHO: Shareaza Web Download Hook - {0EEDB912-C5FA-486F-8334-57288578C627} - C:\Program Files\Shareaza\RazaWebHook32.dll

O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)

Klik op 'Fix checked' om de items te verwijderen. En hang dan een nieuw logje van HijackThis in je volgende bericht.

4 januari 2012 aangepast door kape

Robertt · 4 januari 2012

Een foto van de LP map en de inhoud, slechts 1 van die mappen heeft inhoud, zie foto rechts.

Heb PC heropgestart, Internet werkt nog niet en Norton 2006 staat in het startprogramma en maakt van z'n neus dat er een risico is. Nu, die ganse Norton Beveiligingscentrum mag eigenlijk weg als dat kan.

Hier een HJack:

Logfile of Trend Micro HijackThis v2.0.2

Scan saved at 21:54:32, on 4/01/2012

Platform: Windows XP SP3 (WinNT 5.01.2600)

MSIE: Internet Explorer v8.00 (8.00.6001.18702)

Boot mode: Normal

Running processes:

C:\WINDOWS\System32\smss.exe

C:\WINDOWS\system32\winlogon.exe

C:\WINDOWS\system32\services.exe

C:\WINDOWS\system32\lsass.exe

C:\WINDOWS\system32\svchost.exe

C:\WINDOWS\System32\svchost.exe

C:\WINDOWS\system32\svchost.exe

C:\Program Files\Common Files\Symantec Shared\CCPD-LC\symlcsvc.exe

C:\WINDOWS\system32\LEXBCES.EXE

C:\WINDOWS\system32\LEXPPS.EXE

C:\WINDOWS\system32\spoolsv.exe

C:\Program Files\Common Files\ArcSoft\Connection Service\Bin\ACService.exe

C:\WINDOWS\system32\ANIWConnService.exe

C:\Program Files\Common Files\Apple\Mobile Device Support\AppleMobileDeviceService.exe

C:\Program Files\Bonjour\mDNSResponder.exe

C:\Program Files\CyberLink\PowerCinema\Kernel\TV\CLCapSvc.exe

C:\Program Files\CyberLink\PowerCinema\Kernel\CLML_NTService\CLMLServer.exe

C:\WINDOWS\system32\imapi.exe

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

C:\Program Files\Common Files\LightScribe\LSSrvc.exe

C:\Program Files\Pinnacle\MediaServer\Microsoft SQL Server\MSSQL$PINNACLESYS\Binn\sqlservr.exe

C:\WINDOWS\system32\nvsvc32.exe

C:\Program Files\Microsoft\Search Enhancement Pack\SeaPort\SeaPort.exe

C:\WINDOWS\system32\svchost.exe

C:\Program Files\Yahoo!\SoftwareUpdate\YahooAUService.exe

C:\Program Files\CyberLink\PowerCinema\Kernel\TV\CLSched.exe

C:\WINDOWS\Explorer.EXE

C:\WINDOWS\RTHDCPL.EXE

C:\Program Files\CyberLink\PowerCinema\PCMService.exe

C:\WINDOWS\system32\rundll32.exe

C:\Program Files\HP\HP Software Update\HPwuSchd2.exe

C:\Program Files\Pinnacle\Shared Files\Programs\USBTip\USBTip.exe

C:\Program Files\Common Files\ArcSoft\Connection Service\Bin\ACDaemon.exe

C:\Program Files\Yahoo!\Search Protection\SearchProtection.exe

C:\Program Files\Belgium Identity Card\beid35gui.exe

C:\Program Files\ANI\ANIWZCS2 Service\WZCSLDR2.exe

C:\Program Files\D-Link\DWA-125 revA\AirGCFG.exe

C:\Program Files\Common Files\ArcSoft\Connection Service\Bin\ArcCon.ac

C:\Program Files\iTunes\iTunesHelper.exe

C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe

C:\Program Files\Philips\GoGear VIBE Device Manager\GoGear_Vibe_DeviceManager.exe

C:\Program Files\iPod\bin\iPodService.exe

C:\WINDOWS\system32\ctfmon.exe

C:\HP\KBD\KBD.EXE

c:\windows\system\hpsysdrv.exe

C:\Program Files\Common Files\InstallShield\UpdateService\issch.exe

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

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = Google

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = Hotmail, Messenger, nieuws en entertainment vind je op MSN.nl

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = Bing

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = Bing

R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = Yahoo! UK

R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = HP | MSN

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

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

O2 - BHO: &Yahoo! Toolbar Helper - {02478D38-C3F9-4efb-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll

O2 - BHO: Shareaza Web Download Hook - {0EEDB912-C5FA-486F-8334-57288578C627} - C:\Program Files\Shareaza\RazaWebHook32.dll

O2 - BHO: IEPlugin Class - {11222041-111B-46E3-BD29-EFB2449479B1} - C:\PROGRA~1\ArcSoft\MEDIAC~1\INTERN~1\ARCURL~1.DLL

O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll

O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)

O2 - BHO: Search Helper - {6EBF7485-159F-4bff-A14F-B9E3AAC4465B} - C:\Program Files\Microsoft\Search Enhancement Pack\Search Helper\SEPsearchhelperie.dll

O2 - BHO: Windows Live Aanmelden - Help - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll

O2 - BHO: Java Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files\Java\jre6\bin\jp2ssv.dll

O2 - BHO: Google Gears Helper - {E0FEFE40-FBF9-42AE-BA58-794CA7E3FB53} - C:\Program Files\Google\Google Gears\Internet Explorer\0.5.36.0\gears.dll

O2 - BHO: JQSIEStartDetectorImpl - {E7E6F031-17CE-4C07-BC86-EABFE594F69C} - C:\Program Files\Java\jre6\lib\deploy\jqs\ie\jqs_plugin.dll

O2 - BHO: SingleInstance Class - {FDAD4DA1-61A2-4FD8-9C17-86F7AC245081} - C:\Program Files\Yahoo!\Companion\Installs\cpn\YTSingleInstance.dll

O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll

O4 - HKLM\..\Run: [RTHDCPL] RTHDCPL.EXE

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

O4 - HKLM\..\Run: [nwiz] nwiz.exe /installquiet /keeploaded /nodetect

O4 - HKLM\..\Run: [HPHUPD08] c:\Program Files\HP\Digital Imaging\{33D6CC28-9F75-4d1b-A11D-98895B3A3729}\hphupd08.exe

O4 - HKLM\..\Run: [PCMService] "C:\Program Files\CyberLink\PowerCinema\PCMService.exe"

O4 - HKLM\..\Run: [Recguard] C:\WINDOWS\SMINST\RECGUARD.EXE

O4 - HKLM\..\Run: [HPBootOp] "C:\Program Files\Hewlett-Packard\HP Boot Optimizer\HPBootOp.exe" /run

O4 - HKLM\..\Run: [Reminder] "C:\Windows\Creator\Remind_XP.exe"

O4 - HKLM\..\Run: [HP Software Update] C:\Program Files\HP\HP Software Update\HPwuSchd2.exe

O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot

O4 - HKLM\..\Run: [MemoryCardManager] C:\Program Files\Lexmark\Lexmark Photo Center\MemoryCardManager.exe -startup

O4 - HKLM\..\Run: [uSB2Check] RUNDLL32.EXE "C:\WINDOWS\system32\PCLECoInst.dll",CheckUSBController

O4 - HKLM\..\Run: [uSBToolTip] "C:\Program Files\Pinnacle\Shared Files\\Programs\USBTip\USBTip.exe"

O4 - HKLM\..\Run: [PinnacleDriverCheck] C:\WINDOWS\system32\\PSDrvCheck.exe

O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files\Adobe\Reader 9.0\Reader\Reader_sl.exe"

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

O4 - HKLM\..\Run: [iSUSPM Startup] C:\PROGRA~1\COMMON~1\INSTAL~1\UPDATE~1\ISUSPM.exe -startup

O4 - HKLM\..\Run: [ArcSoft Connection Service] C:\Program Files\Common Files\ArcSoft\Connection Service\Bin\ACDaemon.exe

O4 - HKLM\..\Run: [YSearchProtection] "C:\Program Files\Yahoo!\Search Protection\SearchProtection.exe"

O4 - HKLM\..\Run: [beid] "C:\Program Files\Belgium Identity Card\beid35gui.exe" /startup

O4 - HKLM\..\Run: [ANIWZCS2Service] C:\Program Files\ANI\ANIWZCS2 Service\WZCSLDR2.exe

O4 - HKLM\..\Run: [D-Link D-Link Wireless 150 USB Adapter DWA-125] C:\Program Files\D-Link\DWA-125 revA\AirGCFG.exe

O4 - HKLM\..\Run: [APSDaemon] "C:\Program Files\Common Files\Apple\Apple Application Support\APSDaemon.exe"

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

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

O4 - HKCU\..\Run: [Google Update] "C:\Documents and Settings\HP_Eigenaar\Local Settings\Application Data\Google\Update\GoogleUpdate.exe" /c

O4 - HKCU\..\Run: [search Protection] C:\Program Files\Yahoo!\Search Protection\SearchProtection.exe

O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe

O4 - HKUS\S-1-5-18\..\Run: [DWQueuedReporting] "c:\PROGRA~1\COMMON~1\MICROS~1\DW\dwtrig20.exe" -t (User 'SYSTEM')

O4 - HKUS\.DEFAULT\..\Run: [DWQueuedReporting] "c:\PROGRA~1\COMMON~1\MICROS~1\DW\dwtrig20.exe" -t (User 'Default user')

O4 - S-1-5-18 Startup: Pin.lnk = C:\hp\bin\CLOAKER.EXE (User 'SYSTEM')

O4 - .DEFAULT Startup: Pin.lnk = C:\hp\bin\CLOAKER.EXE (User 'Default user')

O4 - .DEFAULT User Startup: Pin.lnk = C:\hp\bin\CLOAKER.EXE (User 'Default user')

O4 - Global Startup: Adobe Gamma Loader.lnk = C:\Program Files\Common Files\Adobe\Calibration\Adobe Gamma Loader.exe

O4 - Global Startup: HP Digital Imaging Monitor.lnk = C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe

O4 - Global Startup: Philips GoGear VIBE Device Manager.lnk = ?

O9 - Extra button: (no name) - {09C04DA7-5B76-4EBC-BBEE-B25EAC5965F5} - C:\Program Files\Google\Google Gears\Internet Explorer\0.5.36.0\gears.dll

O9 - Extra 'Tools' menuitem: &Instellingen voor Gears - {09C04DA7-5B76-4EBC-BBEE-B25EAC5965F5} - C:\Program Files\Google\Google Gears\Internet Explorer\0.5.36.0\gears.dll

O9 - Extra button: In weblog opnemen - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll

O9 - Extra 'Tools' menuitem: &In weblog opnemen met Windows Live Writer - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll

O9 - Extra button: Onderzoek - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~4\OFFICE11\REFIEBAR.DLL

O9 - Extra button: (no name) - {B205A35E-1FC4-4CE3-818B-899DBBB3388C} - C:\Program Files\Common Files\Microsoft Shared\Encarta Search Bar\ENCSBAR.DLL

O9 - Extra button: Verbindingshelp - {E2D4D26B-0180-43a4-B05F-462D6D54C789} - C:\WINDOWS\PCHEALTH\HELPCTR\Vendors\CN=Hewlett-Packard,L=Cupertino,S=Ca,C=US\IEButton\support.htm

O9 - Extra 'Tools' menuitem: Verbindingshelp - {E2D4D26B-0180-43a4-B05F-462D6D54C789} - C:\WINDOWS\PCHEALTH\HELPCTR\Vendors\CN=Hewlett-Packard,L=Cupertino,S=Ca,C=US\IEButton\support.htm

O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe

O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe

O16 - DPF: {CF40ACC5-E1BB-4AFF-AC72-04C2F616BCA7} - http://wwwimages.adobe.com/www.adobe.com/products/acrobat/nos/gp.cab

O16 - DPF: {E2883E8F-472F-4FB0-9522-AC9BF37916A7} - http://platformdl.adobe.com/NOS/getPlusPlus/1.6/gp.cab

O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\COMMON~1\Skype\SKYPE4~1.DLL

O23 - Service: ArcSoft Connect Daemon (ACDaemon) - ArcSoft Inc. - C:\Program Files\Common Files\ArcSoft\Connection Service\Bin\ACService.exe

O23 - Service: ANIWConn Service (ANIWConnService) - Unknown owner - C:\WINDOWS\system32\ANIWConnService.exe

O23 - Service: ANIWZCSd Service (ANIWZCSdService) - Wireless Service - C:\Program Files\ANI\ANIWZCS2 Service\ANIWZCSdS.exe

O23 - Service: Apple Mobile Device - Apple Inc. - C:\Program Files\Common Files\Apple\Mobile Device Support\AppleMobileDeviceService.exe

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

O23 - Service: CyberLink Background Capture Service (CBCS) (CLCapSvc) - Unknown owner - C:\Program Files\CyberLink\PowerCinema\Kernel\TV\CLCapSvc.exe

O23 - Service: CyberLink Task Scheduler (CTS) (CLSched) - Unknown owner - C:\Program Files\CyberLink\PowerCinema\Kernel\TV\CLSched.exe

O23 - Service: CyberLink Media Library Service - Cyberlink - C:\Program Files\CyberLink\PowerCinema\Kernel\CLML_NTService\CLMLServer.exe

O23 - Service: Google Update Service (gupdate) (gupdate) - Google Inc. - C:\Program Files\Google\Update\GoogleUpdate.exe

O23 - Service: Google Update-service (gupdatem) (gupdatem) - Google Inc. - C:\Program Files\Google\Update\GoogleUpdate.exe

O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\1150\Intel 32\IDriverT.exe

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

O23 - Service: Java Quick Starter (JavaQuickStarterService) - Sun Microsystems, Inc. - C:\Program Files\Java\jre6\bin\jqs.exe

O23 - Service: LexBce Server (LexBceS) - Lexmark International, Inc. - C:\WINDOWS\system32\LEXBCES.EXE

O23 - Service: LightScribeService Direct Disc Labeling Service (LightScribeService) - Hewlett-Packard Company - C:\Program Files\Common Files\LightScribe\LSSrvc.exe

O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe

O23 - Service: Planner voor Automatische LiveUpdate - Unknown owner - C:\Program Files\Symantec\LiveUpdate\ALUSchedulerSvc.exe (file missing)

O23 - Service: ServiceLayer - Nokia - C:\Program Files\PC Connectivity Solution\ServiceLayer.exe

O23 - Service: Symantec Core LC - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\CCPD-LC\symlcsvc.exe

O23 - Service: Yahoo! Updater (YahooAUService) - Yahoo! Inc. - C:\Program Files\Yahoo!\SoftwareUpdate\YahooAUService.exe

--

End of file - 12825 bytes

kape · 5 januari 2012

We gaan eerst die LP-map én Norton aanpakken.

De LP-map mag je manueel volledig verwijderen.

Om alle sporen van Norton/Symantec te verwijderen kan je best de Removal Tool gebruiken.

Zet daarna - ter controle - een nieuw logje van HijackThis in je volgende bericht en laat even weten of Norton nog problemen geeft ?

Robertt · 5 januari 2012

Net heropgestart maar krijg nog steeds de melding 'uw computer loopt mogelijk een beveiligingsrisico' (maar misschien is dat Beveiliginscentrum nog iets anders dan Norton) Soit, heb nu de meldingen afgevinkt.

Grootste probleem is natuurlijk dat ik nog steeds geen internet heb op die PC. Alle streepjes van de D-Link branden en ik heb sowieso internet op deze macbook waarvan ik dit mail.

Als ik met de muis rechtsonder over het netwerverbindingicoon ga, krijg ik deze info: snelheid 65 Mbps - signaalsterkte Uitstekend - Status Netwerkadres verkrijgen.

Als ik rechts klik en herstellen kies blijft die procedure hangen bij "De volgende actie wordt ondernomen: het ip-adres vernieuwen"

(ook bij aansluiten ethernetkabel: geen internet...)

Logfile of Trend Micro HijackThis v2.0.2

Scan saved at 14:12:36, on 5/01/2012

Platform: Windows XP SP3 (WinNT 5.01.2600)

MSIE: Internet Explorer v8.00 (8.00.6001.18702)

Boot mode: Normal

Running processes:

C:\WINDOWS\System32\smss.exe

C:\WINDOWS\system32\winlogon.exe

C:\WINDOWS\system32\services.exe

C:\WINDOWS\system32\lsass.exe

C:\WINDOWS\system32\svchost.exe

C:\WINDOWS\System32\svchost.exe

C:\WINDOWS\system32\svchost.exe

C:\WINDOWS\system32\LEXBCES.EXE

C:\WINDOWS\system32\spoolsv.exe

C:\WINDOWS\system32\LEXPPS.EXE

C:\WINDOWS\Explorer.EXE

C:\WINDOWS\RTHDCPL.EXE

C:\Program Files\CyberLink\PowerCinema\PCMService.exe

C:\Program Files\HP\HP Software Update\HPwuSchd2.exe

C:\WINDOWS\system32\rundll32.exe

C:\Program Files\Pinnacle\Shared Files\Programs\USBTip\USBTip.exe

C:\Program Files\Yahoo!\Search Protection\SearchProtection.exe

C:\Program Files\Belgium Identity Card\beid35gui.exe

C:\Program Files\ANI\ANIWZCS2 Service\WZCSLDR2.exe

C:\Program Files\D-Link\DWA-125 revA\AirGCFG.exe

C:\Program Files\iTunes\iTunesHelper.exe

C:\WINDOWS\system32\ctfmon.exe

C:\Program Files\Common Files\ArcSoft\Connection Service\Bin\ACService.exe

C:\WINDOWS\system32\ANIWConnService.exe

C:\Program Files\Common Files\Apple\Mobile Device Support\AppleMobileDeviceService.exe

C:\Program Files\Bonjour\mDNSResponder.exe

C:\Program Files\CyberLink\PowerCinema\Kernel\TV\CLCapSvc.exe

C:\Program Files\CyberLink\PowerCinema\Kernel\CLML_NTService\CLMLServer.exe

C:\WINDOWS\system32\imapi.exe

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

C:\Program Files\Common Files\LightScribe\LSSrvc.exe

C:\Program Files\Pinnacle\MediaServer\Microsoft SQL Server\MSSQL$PINNACLESYS\Binn\sqlservr.exe

C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe

C:\WINDOWS\system32\nvsvc32.exe

C:\Program Files\Microsoft\Search Enhancement Pack\SeaPort\SeaPort.exe

C:\WINDOWS\system32\svchost.exe

C:\Program Files\Yahoo!\SoftwareUpdate\YahooAUService.exe

C:\Program Files\CyberLink\PowerCinema\Kernel\TV\CLSched.exe

C:\Program Files\iPod\bin\iPodService.exe

C:\HP\KBD\KBD.EXE

c:\windows\system\hpsysdrv.exe

C:\Program Files\Common Files\InstallShield\UpdateService\issch.exe

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

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = Google

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = Hotmail, Messenger, nieuws en entertainment vind je op MSN.nl

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = Bing

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = Bing

R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = Yahoo! UK

R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = http://ie.redirect.hp.com/svs/rdr?TYPE=3&tp=iehome&locale=NL_BE&c=63&bd=PAVILION&pf=desktop