Backdoor trojan that won't go away!!!

Question

saamsal 0 Newbie Poster

18 Years Ago

I have recently had a virus which was detected by Norton as Backdoor.Trojan. I have run antivirus on my computer and all my external drives. However I am still unable to run regedit or cmd.exe ( but am able to use command.com) and when a flash drive is connected the virus jumps onto it (attaching to the autorun.inf file)

here is my hijack this log

Logfile of HijackThis v1.99.1
Scan saved at 5:00:52 AM, on 12/22/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

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\ccSvcHst.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Symantec\LiveUpdate\AluSchedulerSvc.exe
C:\WINDOWS\avgagent.exe
C:\WINDOWS\System32\GEARSec.exe
C:\WINDOWS\system32\LxrHP30s.exe
C:\Program Files\Common Files\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\Program Files\Analog Devices\SoundMAX\SMAgent.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\PowerQuest\Drive Image 7.0\Agent\PQV2iSvc.exe
C:\WINDOWS\system32\wscntfy.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\AGRSMMSG.exe
C:\Program Files\Analog Devices\SoundMAX\SMax4PNP.exe
C:\Program Files\Java\jre1.5.0\bin\jusched.exe
C:\Program Files\HPQ\HP ProtectTools Security Manager\PTHOSTTR.EXE
C:\WINDOWS\system32\igfxtray.exe
C:\WINDOWS\system32\igfxsrvc.exe
C:\WINDOWS\system32\hkcmd.exe
C:\WINDOWS\system32\igfxpers.exe
C:\WINDOWS\system32\dla\tfswctrl.exe
C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
C:\Program Files\hpq\HP Wireless Assistant\HP Wireless Assistant.exe
C:\Program Files\HPQ\Quick Launch Buttons\EabServr.exe
C:\Program Files\Adobe\Acrobat 7.0\Distillr\Acrotray.exe
C:\Program Files\Common Files\Real\Update_OB\realsched.exe
C:\Program Files\Common Files\Symantec Shared\ccSvcHst.exe
C:\Program Files\Messenger\msmsgs.exe
C:\WINDOWS\system32\ctfmon.exe
C:\PROGRA~1\HEWLET~1\Shared\HPQTOA~1.EXE
C:\Program Files\HPQ\SHARED\HPQWMI.exe
C:\PROGRA~1\COMMON~1\SYMANT~1\CCPD-LC\symlcsvc.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\FlashGet\FlashGet.exe
C:\Documents and Settings\Manager.KEN_ILETT\Local Settings\Temporary Internet Files\Content.IE5\WPEFSH6B\HijackThis[1].exe

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL =
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = http://www.powerquest.com/register.asp?Product=DM&SerialNumber=AY3A-PH7J-3DP9-QER3-NJ3J
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: flashget urlcatch - {2F364306-AA45-47B5-9F9D-39A8B94E7EF7} - C:\Program Files\FlashGet\jccatch.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: DriveLetterAccess - {5CA3D70E-1895-11CF-8E15-001234567890} - C:\WINDOWS\system32\dla\tfswshx.dll
O2 - BHO: NCO 2.0 IE BHO - {602ADB0E-4AFF-4217-8AA1-95DAC4DFA408} - C:\Program Files\Common Files\Symantec Shared\coShared\Browser\2.0\coIEPlg.dll
O2 - BHO: Symantec Intrusion Prevention - {6D53EC84-6AAE-4787-AEEE-F4628F01010C} - C:\PROGRA~1\COMMON~1\SYMANT~1\IDS\IPSBHO.dll
O2 - BHO: AcroIEToolbarHelper Class - {AE7CD045-E861-484f-8273-0445EE161910} - C:\Program Files\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll
O2 - BHO: FlashGet GetFlash Class - {F156768E-81EF-470C-9057-481BA8380DBA} - C:\Program Files\FlashGet\getflash.dll
O3 - Toolbar: Adobe PDF - {47833539-D0C5-4125-9FA8-0819E2EAAC93} - C:\Program Files\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll
O3 - Toolbar: Show Norton Toolbar - {7FEBEFE3-6B19-4349-98D2-FFB09D4B49CA} - C:\Program Files\Common Files\Symantec Shared\coShared\Browser\2.0\CoIEPlg.dll
O4 - HKLM\..\Run: [AGRSMMSG] AGRSMMSG.exe
O4 - HKLM\..\Run: [SoundMAXPnP] C:\Program Files\Analog Devices\SoundMAX\SMax4PNP.exe
O4 - HKLM\..\Run: [SoundMAX] C:\Program Files\Analog Devices\SoundMAX\Smax4.exe /tray
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\jre1.5.0\bin\jusched.exe
O4 - HKLM\..\Run: [PTHOSTTR] C:\Program Files\HPQ\HP ProtectTools Security Manager\PTHOSTTR.EXE /Start
O4 - HKLM\..\Run: [igfxtray] C:\WINDOWS\system32\igfxtray.exe
O4 - HKLM\..\Run: [igfxhkcmd] C:\WINDOWS\system32\hkcmd.exe
O4 - HKLM\..\Run: [igfxpers] C:\WINDOWS\system32\igfxpers.exe
O4 - HKLM\..\Run: [UpdateManager] "C:\Program Files\Common Files\Sonic\Update Manager\sgtray.exe" /r
O4 - HKLM\..\Run: [dla] C:\WINDOWS\system32\dla\tfswctrl.exe
O4 - HKLM\..\Run: [SynTPEnh] C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM\..\Run: [hpWirelessAssistant] C:\Program Files\hpq\HP Wireless Assistant\HP Wireless Assistant.exe
O4 - HKLM\..\Run: [eabconfg.cpl] C:\Program Files\HPQ\Quick Launch Buttons\EabServr.exe /Start
O4 - HKLM\..\Run: [Cpqset] C:\Program Files\HPQ\Default Settings\cpqset.exe
O4 - HKLM\..\Run: [WatchDog] C:\Program Files\InterVideo\DVD Check\DVDCheck.exe
O4 - HKLM\..\Run: [Acrobat Assistant 7.0] "C:\Program Files\Adobe\Acrobat 7.0\Distillr\Acrotray.exe"
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [ccApp] "C:\Program Files\Common Files\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [osCheck] "C:\Program Files\Norton Internet Security\osCheck.exe"
O4 - HKLM\..\Run: [StormCodec_Helper] "C:\Program Files\Ringz Studio\Storm Codec\StormSet.exe" /S /opti
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [updateMgr] C:\Program Files\Adobe\Acrobat 7.0\Acrobat\AdobeUpdateManager.exe AcStd7_0_0
O4 - Global Startup: Adobe Acrobat Speed Launcher.lnk = ?
O4 - Global Startup: DVD Check.lnk = C:\Program Files\InterVideo\DVD Check\DVDCheck.exe
O8 - Extra context menu item: &Download All with FlashGet - C:\Program Files\FlashGet\jc_all.htm
O8 - Extra context menu item: &Download with FlashGet - C:\Program Files\FlashGet\jc_link.htm
O8 - Extra context menu item: Convert link target to Adobe PDF - res://C:\Program Files\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll/AcroIECapture.html
O8 - Extra context menu item: Convert link target to existing PDF - res://C:\Program Files\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll/AcroIEAppend.html
O8 - Extra context menu item: Convert selected links to Adobe PDF - res://C:\Program Files\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll/AcroIECaptureSelLinks.html
O8 - Extra context menu item: Convert selected links to existing PDF - res://C:\Program Files\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll/AcroIEAppendSelLinks.html
O8 - Extra context menu item: Convert selection to Adobe PDF - res://C:\Program Files\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll/AcroIECapture.html
O8 - Extra context menu item: Convert selection to existing PDF - res://C:\Program Files\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll/AcroIEAppend.html
O8 - Extra context menu item: Convert to Adobe PDF - res://C:\Program Files\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll/AcroIECapture.html
O8 - Extra context menu item: Convert to existing PDF - res://C:\Program Files\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll/AcroIEAppend.html
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0\bin\npjpi150.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0\bin\npjpi150.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: FlashGet - {D6E814A0-E0C5-11d4-8D29-0050BA6940E3} - C:\Program Files\FlashGet\FlashGet.exe
O9 - Extra 'Tools' menuitem: FlashGet - {D6E814A0-E0C5-11d4-8D29-0050BA6940E3} - C:\Program Files\FlashGet\FlashGet.exe
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
O14 - IERESET.INF: START_PAGE_URL=
O16 - DPF: {485D813E-EE26-4DF8-9FAF-DEDF2885306E} (NSHelp Class) -
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) -
O16 - DPF: {6A344D34-5231-452A-8A57-D064AC9B7862} (Symantec Download Manager) -
O16 - DPF: {7584C670-2274-4EFB-B00B-D6AABA6D3850} (Microsoft RDP Client Control (redist)) -
O17 - HKLM\System\CCS\Services\Tcpip\Parameters: Domain =
O17 - HKLM\Software\..\Telephony: DomainName =
O17 - HKLM\System\CCS\Services\Tcpip\..\{35ED3C96-18E9-4800-B7B5-23089822704E}: NameServer =
O17 - HKLM\System\CS1\Services\Tcpip\Parameters: Domain =
O17 - HKLM\System\CS2\Services\Tcpip\Parameters: Domain =
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\COMMON~1\Skype\SKYPE4~1.DLL
O20 - Winlogon Notify: igfxcui - C:\WINDOWS\SYSTEM32\igfxdev.dll
O20 - Winlogon Notify: WgaLogon - C:\WINDOWS\SYSTEM32\WgaLogon.dll
O23 - Service: Automatic LiveUpdate Scheduler - Symantec Corporation - C:\Program Files\Symantec\LiveUpdate\AluSchedulerSvc.exe
O23 - Service: AVG7 Remote Support Service (AvgAgent) (avgagent) - Unknown owner - avgagent.exe (file missing)
O23 - Service: Symantec Event Manager (ccEvtMgr) - Unknown owner - C:\Program Files\Common Files\Symantec Shared\ccSvcHst.exe" /h ccCommon (file missing)
O23 - Service: Symantec Settings Manager (ccSetMgr) - Unknown owner - C:\Program Files\Common Files\Symantec Shared\ccSvcHst.exe" /h ccCommon (file missing)
O23 - Service: Symantec Lic NetConnect service (CLTNetCnService) - Unknown owner - C:\Program Files\Common Files\Symantec Shared\ccSvcHst.exe" /h ccCommon (file missing)
O23 - Service: COM Host (comHost) - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\VAScanner\comHost.exe
O23 - Service: GEARSecurity - GEAR Software - C:\WINDOWS\System32\GEARSec.exe
O23 - Service: HP WMI Interface (hpqwmi) - Hewlett-Packard Development Company, L.P. - C:\Program Files\HPQ\SHARED\HPQWMI.exe
O23 - Service: LiveUpdate - Symantec Corporation - C:\Program Files\Symantec\LiveUpdate\LuComServer_3_4.EXE
O23 - Service: LiveUpdate Notice - Unknown owner - C:\Program Files\Common Files\Symantec Shared\ccSvcHst.exe" /h ccCommon (file missing)
O23 - Service: Lexar HP30 (LxrHP30s) - Unknown owner - C:\WINDOWS\SYSTEM32\LxrHP30s.exe
O23 - Service: SoundMAX Agent Service (SoundMAX Agent Service (default)) - Analog Devices, Inc. - C:\Program Files\Analog Devices\SoundMAX\SMAgent.exe
O23 - Service: Symantec Core LC - Unknown owner - C:\PROGRA~1\COMMON~1\SYMANT~1\CCPD-LC\symlcsvc.exe
O23 - Service: V2i Protector - PowerQuest Corporation - C:\Program Files\PowerQuest\Drive Image 7.0\Agent\PQV2iSvc.exe

Please help,

Saam

virus-malware wifi

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Latest Post 18 Years Ago Latest Post by saamsal

Dani AI

Generated 7 Months Ago

— the symptoms reported (regedit/cmd blocked, then usable after renaming, plus autorun.inf appearing on USB sticks) match a common pattern: a backdoor/worm that modifies Windows policies or file associations to disable remediation tools and uses Autorun to spread. Malware frequently sets the DisableRegistryTools/DisableCMD policy keys or drops fake handlers so standard tools are blocked; those modifications are widely documented and treated as PUMs by on‑demand scanners. (malwarebytes.com)

Immediate containment (do this first on an infected system):

Disconnect the machine from any network and remove or keep all removable media unplugged; do not insert those USB sticks into other PCs.
Create rescue media (ISO on a clean PC) and scan the infected disk offline rather than trying more repairs while the backdoor may be active.
If this is a corporate/work machine, escalate to IT/incident response before proceeding. (cisa.gov)

Suggested cleanup workflow (ordered, safer than live cleanup):

Boot from a reputable rescue environment and update signatures, then run a full scan.
If booting Windows is required, run RKill to stop visible malicious processes, then run on‑demand scanners (Malwarebytes, vendor removal tools / KVRT) before rebooting. Use Autoruns (Sysinternals) to find and remove persistence entries after verifying what each entry is.
Clean infected USB sticks from the rescue environment (do not trust a simple copy). If data is important, copy documents to a clean machine after scanning; otherwise reformat the sticks.
Safe command examples that are useful from an elevated prompt or rescue shell:

attrib -h -s -r X:\autorun.inf
del /f /q X:\autorun.inf
attrib -h -s -r X:\*.lnk
del /f /q X:\*.lnk

reg delete "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System" /v DisableRegistryTools /f
reg add "HKCU\Software\Policies\Microsoft\Windows\System" /v DisableCMD /t REG_DWORD /d 0 /f

Run registry changes only after backing up the registry and when confident the system is no longer actively controlled. Tools referenced here: RKill, Malwarebytes, Autoruns and rescue ISOs from reputable vendors. (bleepingcomputer.com)

Final note: a true backdoor can leave hidden persistence and stolen credentials; if the machine holds sensitive data or if access is suspected, the most reliable recovery is a full wipe and reinstall from known‑good media, followed by changing all passwords from a clean device. To reduce future spread, disable Autorun/AutoPlay system‑wide (NoDriveTypeAutoRun / Group Policy) after applying the appropriate Microsoft updates or guidance. (learn.microsoft.com)

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saamsal 0 Newbie Poster · Answer 1 · 2007-12-22T01:54:10+00:00

update:

I changed the extention of regedit and cmd to .com and now they can open.

saam