I have Trojan Hores File C:\ Windows\system32\advapi3.dll that is moving to every file i open how can i delete it?
P.s i Unregister it is that ok to do?
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 6:55:43 PM, on 12/9/2007
Platform: Windows XP (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 (6.00.2600.0000)
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:\Program Files\Common Files\Symantec Shared\ccSetMgr.exe
C:\Program Files\Common Files\Symantec Shared\ccEvtMgr.exe
C:\Program Files\Common Files\Symantec Shared\PIF\{B8E1DD85-8582-4c61-B58F-2F227FCA9A08}\PIFSvc.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:\WINDOWS\Explorer.EXE
C:\Program Files\Common Files\AOL\ACS\AOLAcsd.exe
C:\Program Files\Common Files\AOL\TopSpeed\2.0\aoltsmon.exe
C:\Program Files\Symantec\LiveUpdate\ALUSchedulerSvc.exe
C:\WINDOWS\System32\drivers\CDAC11BA.EXE
C:\WINDOWS\system32\crypserv.exe
C:\Program Files\Norton AntiVirus\navapsvc.exe
C:\Program Files\Norton AntiVirus\IWP\NPFMntor.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Common Files\Symantec Shared\ccApp.exe
C:\Program Files\Common Files\AOL\1187546937\ee\AOLSoftware.exe
C:\Program Files\Common Files\AOL\ACS\AOLDial.exe
C:\Program Files\Java\j2re1.4.2_15\bin\jusched.exe
C:\Program Files\TrojanHunter 5.0\THGuard.exe
C:\Program Files\Adobe\Acrobat 5.0\Distillr\AcroTray.exe
C:\Program Files\America Online 9.0\waol.exe
C:\Program Files\RingCentral\RingCentral Call Controller\RCUI.exe
C:\Program Files\Canon\CAL\CALMAIN.exe
C:\Program Files\RingCentral\RingCentral Call Controller\RCHotKey.exe
C:\WINDOWS\System32\wuauclt.exe
C:\Program Files\Common Files\Symantec Shared\Security Console\NSCSRVCE.EXE
C:\WINDOWS\System32\wuauclt.exe
C:\Program Files\America Online 9.0\shellmon.exe
C:\Program Files\Messenger\msmsgs.exe
C:\Program Files\Symantec\LiveUpdate\AUpdate.exe
C:\PROGRA~1\Symantec\LIVEUP~1\LUCOMS~1.EXE
C:\Program Files\Symantec\LiveUpdate\LuCallbackProxy.exe
C:\Program Files\Symantec\LiveUpdate\LuCallbackProxy.exe
C:\Program Files\Symantec\LiveUpdate\LuCallbackProxy.exe
C:\Documents and Settings\Owner\My Documents\My Music\HiJackThis.exe
C:\Program Files\Symantec\LiveUpdate\LuCallbackProxy.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,SearchAssistant =
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar =
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = res://C:\WINDOWS\uqjzi.dll/sp.html#29126
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://securityresponse.symantec.com/avcenter/fix_homepage
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) =
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = localhost
O2 - BHO: (no name) - {00C0618C-1BC9-8D1E-D318-81B8263C4778} - (no file)
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 5.0\Acrobat\ActiveX\AcroIEHelper.ocx
O2 - BHO: (no name) - {0A0FF6B2-F037-E653-9B2C-9C1544FD844C} - (no file)
O2 - BHO: (no name) - {11897CC4-53D0-91EC-CD00-264D5155B63E} - (no file)
O2 - BHO: (no name) - {1DEC02FB-58EF-D81B-CDBE-C8BBD232D7C4} - (no file)
O2 - BHO: (no name) - {1F3E69FD-6860-5121-9E8D-9B547E4E1698} - (no file)
O2 - BHO: (no name) - {22566EDD-97EA-FDF7-E931-1AC148393435} - (no file)
O2 - BHO: (no name) - {2536C943-1153-AD4C-300A-B4B7FF0DA8BA} - (no file)
O2 - BHO: (no name) - {2761A38B-D828-B1C6-1039-1395C426EDDA} - (no file)
O2 - BHO: (no name) - {283AC120-8D27-BA38-11A3-539427563B6C} - (no file)
O2 - BHO: (no name) - {34594EF1-CE58-7AA1-A505-4C0DA46EDB2B} - (no file)
O2 - BHO: (no name) - {4100B7E5-0B01-D4B4-BB29-432E1538BCDB} - (no file)
O2 - BHO: (no name) - {42B6D2AA-FC71-B406-F3BA-1E0D9D759441} - (no file)
O2 - BHO: (no name) - {43DCBA96-1EB4-0E16-9598-2CC35C216F9B} - (no file)
O2 - BHO: (no name) - {4566CC43-0B31-07E0-141A-12FC7D5FF802} - (no file)
O2 - BHO: (no name) - {4ABF050C-DD0D-52FF-DD7A-B315E8F9B10E} - (no file)
O2 - BHO: (no name) - {4E3E1EA6-CE91-404E-B057-29A2716D5950} - C:\WINDOWS\System32\advapi3.dll
O2 - BHO: (no name) - {513DA178-FE14-7DB1-964D-B86D86FD46C8} - (no file)
O2 - BHO: (no name) - {5169D876-4C97-5087-3456-0DCBB0716BC9} - (no file)
O2 - BHO: (no name) - {52E66C5C-7677-FF3C-13F5-F8EE7DD825AF} - (no file)
O2 - BHO: (no name) - {5310AC70-87FB-EEA2-1742-69CF3EC369E6} - (no file)
O2 - BHO: (no name) - {55B7904C-1DD3-0D6C-AC67-825936A8C5E8} - (no file)
O2 - BHO: (no name) - {57144AA3-0FE9-EE66-80BF-16B036B04F47} - (no file)
O2 - BHO: (no name) - {597C394D-7209-3F39-761D-930B4E37CB86} - (no file)
O2 - BHO: (no name) - {5AB9DD84-DD4A-C2F0-AD27-755897C1F262} - (no file)
O2 - BHO: (no name) - {653C8C5C-FA83-1C97-C8D5-86B2CDCD2786} - (no file)
O2 - BHO: (no name) - {708BF05B-B350-F0FF-A9C3-C17875E896F6} - (no file)
O2 - BHO: (no name) - {80E31FF6-41F4-5147-C396-2F8F7AC6D6ED} - (no file)
O2 - BHO: (no name) - {824CB85E-8849-F5FF-50D8-97E69A69E394} - (no file)
O2 - BHO: (no name) - {85E56198-1317-4AA3-031F-529D9C16FA79} - (no file)
O2 - BHO: (no name) - {8A0E5851-C2F7-543D-41EA-644819A75CFC} - (no file)
O2 - BHO: (no name) - {8F25C446-FCA0-E176-9876-4060D9B1BE10} - (no file)
O2 - BHO: (no name) - {955B6DF6-295B-AD12-F4CD-B405B76306F9} - (no file)
O2 - BHO: (no name) - {976DFA7F-2E21-F47E-C5BB-B6C988EE98A5} - (no file)
O2 - BHO: (no name) - {9E6831BF-99D6-C366-55D9-783927C20928} - (no file)
O2 - BHO: (no name) - {A39532FF-4A6C-D2B8-33EC-0AF5DB34793A} - (no file)
O2 - BHO: NAV Helper - {A8F38D8D-E480-4D52-B7A2-731BB6995FDD} - C:\Program Files\Norton AntiVirus\NavShExt.dll
O2 - BHO: (no name) - {B6C621ED-821B-4311-4EF1-ACA0C115E707} - (no file)
O2 - BHO: NAV Helper - {BDF3E430-B101-42AD-A544-FADC6B084872} - (no file)
O2 - BHO: (no name) - {C6819314-0DB4-9E5D-89AB-47AE654BCAD9} - (no file)
O2 - BHO: (no name) - {D8B75631-FC5A-770C-FEB6-B6EE7D86FB2F} - (no file)
O2 - BHO: (no name) - {F49E4405-1B9E-9D79-D2B6-B1B83E92E2ED} - (no file)
O2 - BHO: (no name) - {FD02057F-8DD4-96DD-4618-800A02D21C65} - (no file)
O2 - BHO: (no name) - {FE937706-6A52-A0DA-6536-E5C2A84CE79C} - (no file)
O3 - Toolbar: (no name) - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - (no file)
O3 - Toolbar: Norton AntiVirus - {C4069E3A-68F1-403E-B40E-20066696354B} - C:\Program Files\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O4 - HKLM\..\Run: [CrazyTalk Serve] rundll32.exe C:\WINDOWS\System32\crazytalk.dll,DllServeMediaFile
O4 - HKLM\..\Run: [systen32.exe] C:\WINDOWS\System32\systen32.exe
O4 - HKLM\..\Run: [Symantec PIF AlertEng] "C:\Program Files\Common Files\Symantec Shared\PIF\{B8E1DD85-8582-4c61-B58F-2F227FCA9A08}\PIFSvc.exe" /a /m "C:\Program Files\Common Files\Symantec Shared\PIF\{B8E1DD85-8582-4c61-B58F-2F227FCA9A08}\AlertEng.dll"
O4 - HKLM\..\Run: [RCHotKey] "C:\Program Files\RingCentral\RingCentral Call Controller\RCHotKey.exe"
O4 - HKLM\..\Run: [ccApp] "C:\Program Files\Common Files\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [HostManager] C:\Program Files\Common Files\AOL\1187546937\ee\AOLSoftware.exe
O4 - HKLM\..\Run: [BearShare] "H:\Program Files\BearShare\BearShare.exe" /pause
O4 - HKLM\..\Run: [AOLDialer] C:\Program Files\Common Files\AOL\ACS\AOLDial.exe
O4 - HKLM\..\Run: [iPodVideoConverter_upgrade] "H:\videos\iPodVideoConverter\iPodVideoConverter.exe" /upgrade
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\j2re1.4.2_15\bin\jusched.exe"
O4 - HKLM\..\Run: [THGuard] "C:\Program Files\TrojanHunter 5.0\THGuard.exe"
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [AOL Fast Start] "C:\Program Files\America Online 9.0\AOL.EXE" -b
O4 - .DEFAULT User Startup: AutoPlay.exe (User 'Default user')
O4 - Global Startup: Acrobat Assistant.lnk = C:\Program Files\Adobe\Acrobat 5.0\Distillr\AcroTray.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O4 - Global Startup: RingCentral Call Controller.lnk = C:\Program Files\RingCentral\RingCentral Call Controller\RCUI.exe
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~4\Office10\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\WINDOWS\System32\msjava.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\WINDOWS\System32\msjava.dll
O9 - Extra button: MktBrowser - {17A27031-71FC-11d4-815C-005004D0F1FA} - C:\Program Files\MarketBrowser\lmt\MarketBrowser_Launch.xpy
O9 - Extra 'Tools' menuitem: MarketBrowser - {17A27031-71FC-11d4-815C-005004D0F1FA} - C:\Program Files\MarketBrowser\lmt\MarketBrowser_Launch.xpy
O9 - Extra button: Real.com - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - C:\WINDOWS\System32\Shdocvw.dll
O9 - Extra button: MoneySide - {E023F504-0C5A-4750-A1E7-A9046DEA8A21} - c:\Program Files\Microsoft Money\System\mnyviewer.dll
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\MSMSGS.EXE
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\MSMSGS.EXE
O12 - Plugin for .spop: C:\Program Files\Internet Explorer\Plugins\NPDocBox.dll
O15 - Trusted Zone: *.05p.com
O15 - Trusted Zone: *.scoobidoo.com
O15 - Trusted Zone: *.05p.com (HKLM)
O15 - Trusted Zone: *.scoobidoo.com (HKLM)
O15 - Trusted IP range:
O15 - Trusted IP range: (HKLM)
O16 - DPF: Jungle Gin by pogo -
O16 - DPF: Yahoo! Gin -
O16 - DPF: {05D44720-58E3-49E6-BDF6-D00330E511D3} (StagingUI Object) -
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) -
O16 - DPF: {1CC506A7-1B8D-11D4-BDD5-0060977007E0} (CrazyTalk Player) - http://plug-in.reallusion.com/CrazyTalk.cab
O16 - DPF: {3BB54395-5982-4788-8AF4-B5388FFDD0D8} (MSN Games – Buddy Invite) -
O16 - DPF: {5736C456-EA94-4AAC-BB08-917ABDD035B3} (ZonePAChat Object) - http://zone.msn.com/binframework/v10/ZPAChat.cab55579.cab
O16 - DPF: {7FE26BE2-B923-4B41-9834-E84DA1CC1F96} (Maid Control) -
O16 - DPF: {A4110378-789B-455F-AE86-3A1BFC402853} (ZPA_SHVL Object) -
O16 - DPF: {AE6C4705-0F11-4ACB-BDD4-37F138BEF289} (Image Uploader Control) - http://gianteagle.lifepics.com/net/Uploader/LPUploader45.cab
O16 - DPF: {B8BE5E93-A60C-4D26-A2DC-220313175592} (MSN Games - Installer) -
O16 - DPF: {BFF1950D-B1B4-4AE8-B842-B2CCF06D9A1B} (Zylom Games Player) -
O16 - DPF: {D4323BF2-006A-4440-A2F5-27E3E7AB25F8} (Virtools WebPlayer Class) - http://3dlifeplayer.dl.3dvia.com/player/install/installer.exe
O16 - DPF: {DA2AA6CF-5C7A-4B71-BC3B-C771BB369937} (MSN Games – Game Communicator) - http://zone.msn.com/binframework/v10/StProxy.cab55579.cab
O16 - DPF: {E87F6C8E-16C0-11D3-BEF7-009027438003} (Persits Software XUpload) - http://www.auctiva.com/hostedimages/activex/xupload/XUpload.ocx
O16 - DPF: {EA6246B4-F380-443F-8727-9AEA3371146C} (CPlayFirstWeddingDashControl Object) -
O23 - Service: AOL Connectivity Service (AOL ACS) - America Online - C:\Program Files\Common Files\AOL\ACS\AOLAcsd.exe
O23 - Service: AOL TopSpeed Monitor (AOL TopSpeedMonitor) - America Online, Inc - C:\Program Files\Common Files\AOL\TopSpeed\2.0\aoltsmon.exe
O23 - Service: Automatic LiveUpdate Scheduler - Symantec Corporation - C:\Program Files\Symantec\LiveUpdate\ALUSchedulerSvc.exe
O23 - Service: C-DillaCdaC11BA - Macrovision - C:\WINDOWS\System32\drivers\CDAC11BA.EXE
O23 - Service: Canon Camera Access Library 8 (CCALib8) - Canon Inc. - C:\Program Files\Canon\CAL\CALMAIN.exe
O23 - Service: Symantec Event Manager (ccEvtMgr) - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\ccEvtMgr.exe
O23 - Service: Symantec Settings Manager (ccSetMgr) - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\ccSetMgr.exe
O23 - Service: Crypkey License - Kenonic Controls Ltd. - C:\WINDOWS\SYSTEM32\crypserv.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: LiveUpdate - Symantec Corporation - C:\PROGRA~1\Symantec\LIVEUP~1\LUCOMS~1.EXE
O23 - Service: LiveUpdate Notice Service - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\PIF\{B8E1DD85-8582-4c61-B58F-2F227FCA9A08}\PIFSvc.exe
O23 - Service: Norton AntiVirus Auto-Protect Service (navapsvc) - Symantec Corporation - C:\Program Files\Norton AntiVirus\navapsvc.exe
O23 - Service: Norton AntiVirus Firewall Monitor Service (NPFMntor) - Symantec Corporation - C:\Program Files\Norton AntiVirus\IWP\NPFMntor.exe
O23 - Service: Norton Protection Center Service (NSCService) - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\Security Console\NSCSRVCE.EXE
O23 - Service: NVIDIA Driver Helper Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\System32\nvsvc32.exe
O23 - Service: Symantec AVScan (SAVScan) - Symantec Corporation - C:\Program Files\Norton AntiVirus\SAVScan.exe
O23 - Service: Symantec Network Drivers Service (SNDSrvc) - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\SNDSrvc.exe
O23 - Service: 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

--
End of file - 14586 bytes

Dani AI

Generated

Brief expert note for (and thanks to for the pointer about securing the system): the DLL you mentioned is not a standard Windows component and being registered as an Internet Explorer extension makes it persistent. Unregistering it (regsvr32 /u "C:\Windows\System32\advapi3.dll") only removes the COM registration — it does not remove the file or stop other mechanisms from re-installing or re-registering it. Treat this as an active infection and follow a cautious, methodical cleanup workflow.

Recommended cleanup workflow

  1. Immediately disconnect the PC from the network to prevent further spread.
  2. Back up personal data (documents, pictures, mail) only — do not copy executables. Scan backups from a known-clean machine before restoring.
  3. Boot into Safe Mode (or use a clean rescue/recovery environment) so malicious components don’t load.
  4. Use a combination of tools: an up-to-date on-demand anti-malware scanner (for example, Malwarebytes), a rootkit scanner (TDSSKiller/GMER if comfortable), and Sysinternals Autoruns + Process Explorer to find and disable the browser helper object and any Run/Service entries. Look for the DLL on disk, close handles that keep it locked, then remove the file from Safe Mode or from a rescue environment.
  5. Clear System Restore (to remove infected restore points) while offline, then re-enable it after the system is clean.
  6. Reboot and run full scans again. Verify persistence is gone (no reappearing BHOs, Run keys, or suspicious processes).

If executables across the system are infected, or if you cannot reliably remove the infection, the safest option is a full backup of user data followed by a clean OS reinstall. Deleting or unregistering random System32 files without verification can break Windows — proceed carefully. After you’ve attempted these steps, post an updated HijackThis log and a short list of tools/actions you ran so the next replies can verify and advise further.

Please go here & install ALL critical updates required for your system, including service pack 1a for both XP and IE6.
Most malware is designed to attack unpatched XP systems - exploiting the available 'holes' - and can bypass third-party protection on an unpatched system. The most that can be done with an unpatched system is put a temporary bandage on it. Your system can potentially be reinfected within minutes of cleaning it.
Post back a new hijackthis log after rebooting your system.

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