for the past two weeks my computer has been goin really slow, and today my internet stopped working, but it works on all the other comps in my house......i just found out that it is a virus but i dont know how to remove it.......help! Anti-virus programs i've tried: Spyware Doctor - it finds infections and fixes them, but they come back right away.... Norton Internet Security - same as Spyware Doctor
I got the log file.....can someone please look at it? Logfile of Trend Micro HijackThis v2.0.0 (BETA) Scan saved at 5:42:32 PM, on 4/23/2007 Platform: Windows XP SP2 (WinNT 5.01.2600) Boot mode: Normal Running processes: C:\WINDOWS\System32\smss.exe C:\WINDOWS\system32\csrss.exe C:\WINDOWS\system32\winlogon.exe C:\WINDOWS\system32\services.exe C:\WINDOWS\system32\lsass.exe C:\WINDOWS\system32\Ati2evxx.exe C:\WINDOWS\system32\svchost.exe C:\WINDOWS\system32\svchost.exe C:\WINDOWS\System32\svchost.exe C:\WINDOWS\System32\svchost.exe C:\WINDOWS\System32\svchost.exe C:\WINDOWS\system32\Ati2evxx.exe c:\Program Files\Common Files\Symantec Shared\ccSetMgr.exe c:\Program Files\Common Files\Symantec Shared\ccEvtMgr.exe c:\Program Files\Common Files\Symantec Shared\ccProxy.exe c:\Program Files\Common Files\Symantec Shared\SNDSrvc.exe c:\Program Files\Common Files\Symantec Shared\SPBBC\SPBBCSvc.exe C:\Program Files\Common Files\Symantec Shared\CCPD-LC\symlcsvc.exe C:\WINDOWS\system32\spoolsv.exe C:\Program Files\Symantec\LiveUpdate\ALUSchedulerSvc.exe C:\Program Files\Bonjour\mDNSResponder.exe c:\Program Files\Norton Internet Security\Norton AntiVirus\navapsvc.exe C:\Program Files\Spyware Doctor\svcntaux.exe C:\Program Files\Spyware Doctor\swdsvc.exe C:\WINDOWS\System32\alg.exe C:\WINDOWS\system32\wuauclt.exe C:\WINDOWS\Explorer.EXE C:\Program Files\ANI\ANIWZCS2 Service\WZCSLDR2.exe C:\WINDOWS\RTHDCPL.EXE C:\Program Files\Java\jre1.6.0_01\bin\jusched.exe C:\Program Files\ATI Technologies\ATI.ACE\cli.exe C:\WINDOWS\System32\svchost.exe C:\Program Files\Spyware Doctor\SDTrayApp.exe C:\Program Files\Common Files\Symantec Shared\ccApp.exe C:\Program Files\Common Files\Ahead\Lib\NMBgMonitor.exe C:\WINDOWS\system32\ctfmon.exe C:\Program Files\Common Files\Ahead\Lib\NMIndexingService.exe C:\Program Files\Common Files\Ahead\Lib\NMIndexStoreSvr.exe C:\WINDOWS\System32\wbem\wmiapsrv.exe C:\WINDOWS\System32\wbem\wmiprvse.exe C:\Program Files\ATI Technologies\ATI.ACE\cli.exe c:\Program Files\Common Files\Symantec Shared\Security Console\NSCSRVCE.EXE C:\Documents and Settings\Z\Desktop\HiJackThis_v2.exe C:\WINDOWS\System32\wbem\wmiprvse.exe 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 O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll O2 - BHO: (no name) - {1D531771-1AD5-4F27-87A2-6980501F9703} - C:\WINDOWS\system32\khfddbc.dll O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_01\bin\ssv.dll O2 - BHO: Norton Internet Security 2006 - {9ECB9560-04F9-4bbc-943D-298DDF1699E1} - c:\Program Files\Common Files\Symantec Shared\AdBlocking\NISShExt.dll O2 - BHO: NAV Helper - {A8F38D8D-E480-4D52-B7A2-731BB6995FDD} - c:\Program Files\Norton Internet Security\Norton AntiVirus\NavShExt.dll O2 - BHO: (no name) - {AD279F67-3A2C-40E1-97C6-D7F58C422E1F} - C:\WINDOWS\system32\pmnlk.dll O3 - Toolbar: Norton Internet Security 2006 - {0B53EAC3-8D69-4b9e-9B19-A37C9A5676A7} - c:\Program Files\Common Files\Symantec Shared\AdBlocking\NISShExt.dll O3 - Toolbar: Norton AntiVirus - {C4069E3A-68F1-403E-B40E-20066696354B} - c:\Program Files\Norton Internet Security\Norton AntiVirus\NavShExt.dll O4 - HKLM\..\Run: [ANIWZCS2Service] C:\Program Files\ANI\ANIWZCS2 Service\WZCSLDR2.exe O4 - HKLM\..\Run: [JMB36X Configure] C:\WINDOWS\system32\JMRaidTool.exe boot O4 - HKLM\..\Run: [RTHDCPL] RTHDCPL.EXE O4 - HKLM\..\Run: [SkyTel] SkyTel.EXE O4 - HKLM\..\Run: [Alcmtr] ALCMTR.EXE O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.6.0_01\bin\jusched.exe" O4 - HKLM\..\Run: [ATICCC] "C:\Program Files\ATI Technologies\ATI.ACE\cli.exe" runtime -Delay O4 - HKLM\..\Run: [NeroFilterCheck] C:\Program Files\Common Files\Ahead\Lib\NeroCheck.exe O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime O4 - HKLM\..\Run: [SDTray] C:\Program Files\Spyware Doctor\SDTrayApp.exe O4 - HKLM\..\Run: [ccApp] "c:\Program Files\Common Files\Symantec Shared\ccApp.exe" O4 - HKCU\..\Run: [BgMonitor_{79662E04-7C6C-4d9f-84C7-88D8A56B10AA}] "C:\Program Files\Common Files\Ahead\Lib\NMBgMonitor.exe" O4 - HKCU\..\Run: [DAEMON Tools] "C:\Program Files\DAEMON Tools\daemon.exe" -lang 1033 O4 - HKCU\..\Run: [updateMgr] C:\Program Files\Adobe\Acrobat 7.0\Reader\AdobeUpdateManager.exe AcRdB7_0_9 O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe O4 - Global Startup: Adobe Reader Speed Launch.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office12\EXCEL.EXE/3000 O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_01\bin\ssv.dll O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_01\bin\ssv.dll O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\Office12\REFIEBAR.DLL O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing) O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing) O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\WINDOWS\System32\shdocvw.dll O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\WINDOWS\System32\shdocvw.dll O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/microsoftupdate/v6/V5Controls/en/x86/client/wuweb_site.cab?1175047888857 O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://update.microsoft.com/microsoftupdate/v6/V5Controls/en/x86/client/muweb_site.cab?1175047876451 O20 - Winlogon Notify: khfddbc - C:\WINDOWS\SYSTEM32\khfddbc.dll O20 - Winlogon Notify: pmnlk - C:\WINDOWS\system32\pmnlk.dll O22 - SharedTaskScheduler: Browseui preloader - {438755C2-A8BA-11D1-B96B-00A0C90312E1} - C:\WINDOWS\System32\browseui.dll O22 - SharedTaskScheduler: Component Categories cache daemon - {8C7461EF-2B13-11d2-BE35-3078302C2030} - C:\WINDOWS\System32\browseui.dll O23 - Service: ANIWZCSd Service (ANIWZCSdService) - Alpha Networks Inc. - C:\Program Files\ANI\ANIWZCS2 Service\ANIWZCSdS.exe O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\system32\Ati2evxx.exe O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe O23 - Service: Automatic LiveUpdate Scheduler - Symantec Corporation - C:\Program Files\Symantec\LiveUpdate\ALUSchedulerSvc.exe O23 - Service: ##Id_String1.6844F930_1628_4223_B5CC_5BB94B879762## (Bonjour Service) - Apple Computer, Inc. - C:\Program Files\Bonjour\mDNSResponder.exe O23 - Service: Symantec Event Manager (ccEvtMgr) - Symantec Corporation - c:\Program Files\Common Files\Symantec Shared\ccEvtMgr.exe O23 - Service: Symantec Internet Security Password Validation (ccISPwdSvc) - Symantec Corporation - c:\Program Files\Norton Internet Security\ccPwdSvc.exe O23 - Service: Symantec Network Proxy (ccProxy) - Symantec Corporation - c:\Program Files\Common Files\Symantec Shared\ccProxy.exe O23 - Service: Symantec Settings Manager (ccSetMgr) - Symantec Corporation - c:\Program Files\Common Files\Symantec Shared\ccSetMgr.exe O23 - Service: COM Host (comHost) - Symantec Corporation - c:\Program Files\Norton Internet Security\comHost.exe O23 - Service: FLEXnet Licensing Service - Macrovision Europe Ltd. - C:\Program Files\Common Files\Macrovision Shared\FLEXnet Publisher\FNPLicensingService.exe O23 - Service: LiveUpdate - Symantec Corporation - C:\PROGRA~1\Symantec\LIVEUP~1\LUCOMS~1.EXE O23 - Service: Norton AntiVirus Auto-Protect Service (navapsvc) - Symantec Corporation - c:\Program Files\Norton Internet Security\Norton AntiVirus\navapsvc.exe O23 - Service: NBService - Nero AG - C:\Program Files\Nero\Nero 7\Nero BackItUp\NBService.exe O23 - Service: NMIndexingService - Nero AG - C:\Program Files\Common Files\Ahead\Lib\NMIndexingService.exe O23 - Service: Norton Protection Center Service (NSCService) - Symantec Corporation - c:\Program Files\Common Files\Symantec Shared\Security Console\NSCSRVCE.EXE O23 - Service: Symantec AVScan (SAVScan) - Symantec Corporation - c:\Program Files\Norton Internet Security\Norton AntiVirus\SAVScan.exe O23 - Service: Spyware Doctor Auxiliary Service (sdAuxService) - Unknown owner - C:\Program Files\Spyware Doctor\svcntaux.exe O23 - Service: Spyware Doctor Service (sdCoreService) - PC Tools - C:\Program Files\Spyware Doctor\swdsvc.exe O23 - Service: Symantec Network Drivers Service (SNDSrvc) - Symantec Corporation - c:\Program Files\Common Files\Symantec Shared\SNDSrvc.exe O23 - Service: Symantec SPBBCSvc (SPBBCSvc) - Symantec Corporation - c:\Program Files\Common Files\Symantec Shared\SPBBC\SPBBCSvc.exe O23 - Service: Symantec Core LC - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\CCPD-LC\symlcsvc.exe
When I don't have time to personally read the logfile I just paste the info into a box at this site.... http://www.hijackthis.de It has a precompiled database of good and bad entries that is growing daily. So your list is checked against that one and it lets you know what nasties you got. Here's what it said you should remove.... O2 - BHO: (no name) - {1D531771-1AD5-4F27-87A2-6980501F9703} - C:\WINDOWS\system32\khfddbc.dll O2 - BHO: (no name) - {AD279F67-3A2C-40E1-97C6-D7F58C422E1F} - C:\WINDOWS\system32\pmnlk.dll O4 - HKLM\..\Run: [Alcmtr] ALCMTR.EXE (it said that although this is not a malicious program, realtek uses it to collect info about you) O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing) O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing) O20 - Winlogon Notify: pmnlk - C:\WINDOWS\system32\pmnlk.dll [this is the infamous Vundo Trojan, I will include links on the bottom to tools I will upload that can remove the Vundo trojan.I have included a Read Me file so take a look at it ] http://www.sendspace.com/file/q3ecck
i removed wat u told me with hijackthis and vundofix, but i dont think its gone.....take a look Logfile of Trend Micro HijackThis v2.0.0 (BETA) Scan saved at 7:59:40 PM, on 4/24/2007 Platform: Windows XP SP2 (WinNT 5.01.2600) Boot mode: Normal Running processes: C:\WINDOWS\System32\smss.exe C:\WINDOWS\system32\csrss.exe C:\WINDOWS\system32\winlogon.exe C:\WINDOWS\system32\services.exe C:\WINDOWS\system32\lsass.exe C:\WINDOWS\system32\Ati2evxx.exe C:\WINDOWS\system32\svchost.exe C:\WINDOWS\system32\svchost.exe C:\WINDOWS\System32\svchost.exe C:\WINDOWS\System32\svchost.exe C:\WINDOWS\System32\svchost.exe C:\WINDOWS\system32\Ati2evxx.exe C:\WINDOWS\system32\spoolsv.exe C:\Program Files\Symantec\LiveUpdate\ALUSchedulerSvc.exe C:\Program Files\Spyware Doctor\svcntaux.exe C:\Program Files\Spyware Doctor\swdsvc.exe C:\Program Files\Common Files\Symantec Shared\CCPD-LC\symlcsvc.exe C:\WINDOWS\System32\alg.exe C:\WINDOWS\Explorer.EXE C:\Program Files\ANI\ANIWZCS2 Service\WZCSLDR2.exe C:\WINDOWS\RTHDCPL.EXE C:\Program Files\Java\jre1.6.0_01\bin\jusched.exe C:\Program Files\ATI Technologies\ATI.ACE\cli.exe C:\Program Files\Spyware Doctor\SDTrayApp.exe C:\Program Files\Common Files\Ahead\Lib\NMBgMonitor.exe C:\WINDOWS\system32\ctfmon.exe C:\WINDOWS\System32\svchost.exe C:\Program Files\Common Files\Ahead\Lib\NMIndexingService.exe C:\Program Files\Common Files\Ahead\Lib\NMIndexStoreSvr.exe C:\Program Files\ATI Technologies\ATI.ACE\cli.exe C:\Program Files\Mozilla Firefox\firefox.exe C:\Documents and Settings\Z\Application Data\Microsoft\Internet Explorer\Quick Launch\HiJackThis_v2.exe C:\WINDOWS\System32\wbem\wmiprvse.exe 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 O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll O2 - BHO: (no name) - {1557B435-8242-4686-9AA3-9265BF7525A4} - C:\WINDOWS\system32\dgrdkqhj.dll O2 - BHO: (no name) - {1C7E8E8E-C820-4888-B822-32AD41D9B6C2} - C:\WINDOWS\system32\pmnlk.dll (file missing) O2 - BHO: (no name) - {1D531771-1AD5-4F27-87A2-6980501F9703} - C:\WINDOWS\system32\khfddbc.dll O2 - BHO: (no name) - {5C2C2491-33CD-4A58-80CD-14792AE08905} - C:\WINDOWS\system32\jkklj.dll O2 - BHO: (no name) - {67C55A8D-E808-4caa-9EA7-F77102DE0BB6} - C:\WINDOWS\system32\qmxcxiio.dll O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_01\bin\ssv.dll O2 - BHO: (no name) - {E38FE4A0-664D-4D30-A517-54C89ED99704} - C:\WINDOWS\system32\gfjyvjmm.dll O4 - HKLM\..\Run: [ANIWZCS2Service] C:\Program Files\ANI\ANIWZCS2 Service\WZCSLDR2.exe O4 - HKLM\..\Run: [JMB36X Configure] C:\WINDOWS\system32\JMRaidTool.exe boot O4 - HKLM\..\Run: [RTHDCPL] RTHDCPL.EXE O4 - HKLM\..\Run: [SkyTel] SkyTel.EXE O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.6.0_01\bin\jusched.exe" O4 - HKLM\..\Run: [ATICCC] "C:\Program Files\ATI Technologies\ATI.ACE\cli.exe" runtime -Delay O4 - HKLM\..\Run: [NeroFilterCheck] C:\Program Files\Common Files\Ahead\Lib\NeroCheck.exe O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime O4 - HKLM\..\Run: [SDTray] C:\Program Files\Spyware Doctor\SDTrayApp.exe O4 - HKLM\..\Run: [PrintDrive] rundll32.exe "C:\WINDOWS\system32\bttvmhrd.dll",setvm O4 - HKCU\..\Run: [BgMonitor_{79662E04-7C6C-4d9f-84C7-88D8A56B10AA}] "C:\Program Files\Common Files\Ahead\Lib\NMBgMonitor.exe" O4 - HKCU\..\Run: [DAEMON Tools] "C:\Program Files\DAEMON Tools\daemon.exe" -lang 1033 O4 - HKCU\..\Run: [updateMgr] C:\Program Files\Adobe\Acrobat 7.0\Reader\AdobeUpdateManager.exe AcRdB7_0_9 O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe O4 - Global Startup: Adobe Reader Speed Launch.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office12\EXCEL.EXE/3000 O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_01\bin\ssv.dll O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_01\bin\ssv.dll O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\Office12\REFIEBAR.DLL O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\WINDOWS\System32\shdocvw.dll O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\WINDOWS\System32\shdocvw.dll O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/microsoftupdate/v6/V5Controls/en/x86/client/wuweb_site.cab?1175047888857 O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://update.microsoft.com/microsoftupdate/v6/V5Controls/en/x86/client/muweb_site.cab?1175047876451 O20 - Winlogon Notify: ddayy - C:\WINDOWS\system32\ddayy.dll (file missing) O20 - Winlogon Notify: jkklj - C:\WINDOWS\system32\jkklj.dll O20 - Winlogon Notify: khfddbc - C:\WINDOWS\SYSTEM32\khfddbc.dll O22 - SharedTaskScheduler: Browseui preloader - {438755C2-A8BA-11D1-B96B-00A0C90312E1} - C:\WINDOWS\System32\browseui.dll O22 - SharedTaskScheduler: Component Categories cache daemon - {8C7461EF-2B13-11d2-BE35-3078302C2030} - C:\WINDOWS\System32\browseui.dll O23 - Service: ANIWZCSd Service (ANIWZCSdService) - Alpha Networks Inc. - C:\Program Files\ANI\ANIWZCS2 Service\ANIWZCSdS.exe O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\system32\Ati2evxx.exe O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe O23 - Service: Automatic LiveUpdate Scheduler - Symantec Corporation - C:\Program Files\Symantec\LiveUpdate\ALUSchedulerSvc.exe O23 - Service: LiveUpdate - Symantec Corporation - C:\PROGRA~1\Symantec\LIVEUP~1\LUCOMS~1.EXE O23 - Service: NBService - Nero AG - C:\Program Files\Nero\Nero 7\Nero BackItUp\NBService.exe O23 - Service: NMIndexingService - Nero AG - C:\Program Files\Common Files\Ahead\Lib\NMIndexingService.exe O23 - Service: Spyware Doctor Auxiliary Service (sdAuxService) - Unknown owner - C:\Program Files\Spyware Doctor\svcntaux.exe O23 - Service: Spyware Doctor Service (sdCoreService) - PC Tools - C:\Program Files\Spyware Doctor\swdsvc.exe O23 - Service: Symantec Core LC - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\CCPD-LC\symlcsvc.exe EDIT: i used that site u gave me, i check the bad ones and clicked "fix checked," i scan it again but some come back, how do i get rid of them permanently?