Downloader.Istbar.3.BU

Discussion in 'adware, spyware & hijack cleaning' started by SWCS, Jun 25, 2004.

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  1. SWCS
    Offline

    SWCS Registered Member

    AVG detected Downloader.Istbar.3.BU but could not clean it. Ran Ad-Aware, but locked up. Ad-Aware detected the trojan. Attached is the HJT.

    Your help would be appreciated. Thanks.

    SWCS

    Logfile of HijackThis v1.97.7
    Scan saved at 9:27:25 AM, on 6/25/2004
    Platform: Windows 2000 SP4 (WinNT 5.00.2195)
    MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

    Running processes:
    C:\WINNT\System32\smss.exe
    C:\WINNT\system32\winlogon.exe
    C:\WINNT\system32\services.exe
    C:\WINNT\system32\lsass.exe
    C:\Program Files\STOPzilla!\szntsvc.exe
    C:\WINNT\system32\svchost.exe
    C:\WINNT\System32\lexbces.exe
    C:\WINNT\system32\spoolsv.exe
    C:\PROGRA~1\Grisoft\AVG6\avgserv.exe
    C:\WINNT\System32\svchost.exe
    C:\WINNT\system32\regsvc.exe
    C:\WINNT\system32\MSTask.exe
    C:\WINNT\system32\stisvc.exe
    C:\WINNT\System32\WBEM\WinMgmt.exe
    C:\WINNT\System32\mspmspsv.exe
    C:\WINNT\system32\svchost.exe
    C:\WINNT\Explorer.EXE
    C:\WINNT\System32\spool\DRIVERS\W32X86\3\printray.exe
    C:\Program Files\QuickTime\qttask.exe
    C:\Program Files\Viewpoint\Viewpoint Manager\ViewMgr.exe
    C:\PROGRA~1\LEXMAR~1\ACMonitor_X73.exe
    C:\PROGRA~1\LEXMAR~1\AcBtnMgr_X73.exe
    C:\Program Files\Winamp\Winampa.exe
    C:\WINNT\system32\spool\DRIVERS\W32X86\3\E_S4I2G1.EXE
    C:\Program Files\MSN Messenger\MsnMsgr.Exe
    C:\Program Files\Microsoft Office\Office\OSA.EXE
    C:\Program Files\WinZip\WZQKPICK.EXE
    C:\WINNT\system32\wuauclt.exe
    C:\Program Files\Yahoo!\Messenger\YPager.exe
    C:\PROGRA~1\Grisoft\AVG6\AVGCC32.EXE
    C:\PROGRA~1\WINZIP\winzip32.exe
    C:\Documents and Settings\Administrator\Local Settings\Temp\HijackThis.exe

    R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://server224.smartbotpro.net/7search/?new-hkcu
    R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://www.couldnotfind.com/search_page.html?&account_id=145872
    R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://google.com/
    R1 - HKCU\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://www.couldnotfind.com/search_page.html?&account_id=145872
    R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://default-homepage-network.com/start.cgi?new-hklm
    R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://server224.smartbotpro.net/7search/?new-hklm
    R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://www.digitalfan.com/search
    R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://search.yahoo.com/search?p=%s
    R3 - Default URLSearchHook is missing
    O2 - BHO: (no name) - {00000762-3965-4A1A-98CE-3D4BF457D4C8} - C:\Program Files\Lycos\Sidesearch\sidesearch1400.dll
    O2 - BHO: (no name) - {02478D38-C3F9-4efb-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn\ycomp5_2_3_0.dll
    O2 - BHO: (no name) - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
    O2 - BHO: (no name) - {E3215F20-3212-11D6-9F8B-00D0B743919D} - C:\WINNT\System32\StopzillaBHO.dll
    O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINNT\System32\msdxm.ocx
    O3 - Toolbar: Yahoo! Companion - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\ycomp5_2_3_0.dll
    O3 - Toolbar: ISTbar - {5F1ABCDB-A875-46c1-8345-B72A4567E486} - C:\Program Files\ISTbar\istbar.dll
    O4 - HKLM\..\Run: [Synchronization Manager] mobsync.exe /logon
    O4 - HKLM\..\Run: [PrinTray] C:\WINNT\System32\spool\DRIVERS\W32X86\3\printray.exe
    O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
    O4 - HKLM\..\Run: [AVG_CC] C:\PROGRA~1\Grisoft\AVG6\avgcc32.exe /STARTUP
    O4 - HKLM\..\Run: [STOPzilla] "C:\Program Files\STOPzilla!\Stopzilla.exe" /autorun
    O4 - HKLM\..\Run: [SysUpd] C:\WINNT\sysupd.exe
    O4 - HKLM\..\Run: [ViewMgr] C:\Program Files\Viewpoint\Viewpoint Manager\ViewMgr.exe
    O4 - HKLM\..\Run: [Lexmark X73 Button Monitor] C:\PROGRA~1\LEXMAR~1\ACMonitor_X73.exe
    O4 - HKLM\..\Run: [Lexmark X73 Button Manager] C:\PROGRA~1\LEXMAR~1\AcBtnMgr_X73.exe
    O4 - HKLM\..\Run: [WinampAgent] "C:\Program Files\Winamp\Winampa.exe"
    O4 - HKLM\..\Run: [EPSON Stylus CX5400] C:\WINNT\system32\spool\DRIVERS\W32X86\3\E_S4I2G1.EXE /P19 "EPSON Stylus CX5400" /O6 "USB004" /M "Stylus CX5400"
    O4 - HKLM\..\Run: [Power Scan] C:\Program Files\Power Scan\powerscan.exe
    O4 - HKCU\..\Run: [Yahoo! Pager] C:\Program Files\Yahoo!\Messenger\ypager.exe -quiet
    O4 - HKCU\..\Run: [AIM] C:\Program Files\AIM\aim.exe -cnetwait.odl
    O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
    O4 - HKCU\..\Run: [lflmb10n] C:\WINNT\system32\lflmb10n.exe
    O4 - Global Startup: Microsoft Find Fast.lnk = C:\Program Files\Microsoft Office\Office\FINDFAST.EXE
    O4 - Global Startup: Office Startup.lnk = C:\Program Files\Microsoft Office\Office\OSA.EXE
    O4 - Global Startup: WinZip Quick Pick.lnk = C:\Program Files\WinZip\WZQKPICK.EXE
    O9 - Extra button: Sidesearch (HKLM)
    O9 - Extra button: Messenger (HKLM)
    O9 - Extra 'Tools' menuitem: Yahoo! Messenger (HKLM)
    O9 - Extra button: AIM (HKLM)
    O9 - Extra button: Related (HKLM)
    O9 - Extra 'Tools' menuitem: Show &Related Links (HKLM)
    O16 - DPF: Yahoo! Pool 2 - http://download.games.yahoo.com/games/clients/y/potc_x.cab
    O16 - DPF: {166B1BCA-3F9C-11CF-8075-444553540000} (Shockwave ActiveX Control) - http://download.macromedia.com/pub/shockwave/cabs/director/sw.cab
    O16 - DPF: {33564D57-0000-0010-8000-00AA00389B71} - http://download.microsoft.com/download/F/6/E/F6E491A6-77E1-4E20-9F5F-94901338C922/wmv9VCM.CAB
    O16 - DPF: {41F17733-B041-4099-A042-B518BB6A408C} - http://a1540.g.akamai.net/7/1540/52...pple.com/bonnie/us/win/QuickTimeInstaller.exe
    O16 - DPF: {9F1C11AA-197B-4942-BA54-47A8489BB47F} (Update Class) - http://v4.windowsupdate.microsoft.com/CAB/x86/unicode/iuctl.CAB?38103.5141087963
    O16 - DPF: {CA034DCC-A580-4333-B52F-15F98C42E04C} (Downloader Class) - https://www.stopzilla.com/_download/Auto_Installer/dwnldr.cab
    O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab
    O16 - DPF: {EF791A6B-FC12-4C68-99EF-FB9E207A39E6} (McFreeScan Class) - http://download.mcafee.com/molbin/iss-loc/vso/en-us/tools/mcfscan/1,5,0,4352/mcfscan.cab
    O16 - DPF: {FB2961FD-DD24-4F8A-8A92-6F9325FF6F11} - http://www.supaseek.com/toolbar/toolbar.cab
  2. IMM
    Offline

    IMM Spyware Fighter

    Before you start, please unzip HijackThis to it's own folder somewhere.
    The program will make backups in the folder it's run from.
    These easily get lost in a Temp folder and are an annoyance on the desktop.


    Run HijackThis again, push Scan and place a check mark next to the following items using your mouse.
    Next, close all browser Windows, and push the 'Fix checked' button in HijackThis

    R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://server224.smartbotpro.net/7search/?new-hkcu
    R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://www.couldnotfind.com/search_...count_id=145872
    R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://google.com/
    R1 - HKCU\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://www.couldnotfind.com/search_...count_id=145872
    R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://default-homepage-network.com/start.cgi?new-hklm
    R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://server224.smartbotpro.net/7search/?new-hklm
    R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://www.digitalfan.com/search
    R3 - Default URLSearchHook is missing
    O2 - BHO: (no name) - {00000762-3965-4A1A-98CE-3D4BF457D4C8} - C:\Program Files\Lycos\Sidesearch\sidesearch1400.dll
    O3 - Toolbar: ISTbar - {5F1ABCDB-A875-46c1-8345-B72A4567E486} - C:\Program Files\ISTbar\istbar.dll
    O4 - HKLM\..\Run: [SysUpd] C:\WINNT\sysupd.exe
    O4 - HKLM\..\Run: [Power Scan] C:\Program Files\Power Scan\powerscan.exe
    O4 - HKCU\..\Run: [lflmb10n] C:\WINNT\system32\lflmb10n.exe
    O9 - Extra button: Sidesearch (HKLM)
    O16 - DPF: {FB2961FD-DD24-4F8A-8A92-6F9325FF6F11} - http://www.supaseek.com/toolbar/toolbar.cab


    Empty the TIF (Temporary Internet Files)
    To do so use Control Panel > Internet Options(or right click the IE icon on the desktop and choose Properties)
    Click Delete Files on the General Tab - place a check in the Delete all offline content box and then press OK

    Delete all the files in (and any subfolders of) the C:\WINNT\Temp\ folder

    Set your Explorer up using the info in this link so that hidden and System files are visible
    Also Uncheck the "Hide extensions for known file types" box

    Reboot to SAFE mode
    How to start the computer in Safe mode

    Delete the following files:
    C:\WINNT\sysupd.exe
    C:\WINNT\system32\lflmb10n.exe


    Delete the following folder(s) completely
    C:\Program Files\Lycos\Sidesearch\
    C:\Program Files\ISTbar\


    Reboot to normal mode

    Download Spybot - Search and Destroy
    After installing, first press Online, and search for, put a check mark at, and install all updates.
    Next, close all Internet Explorer windows, hit 'Check for Problems', and after SpyBotSD has completed it's scan push the 'Fix checked' button for all that it has automatically selected.

    ------ some partial info (for further cleanup)
    http://www.doxdesk.com/parasite/ISTbar.html
    http://www.kephyr.com/spywarescanner/library/sidesearch/index.phtml
    http://www.kephyr.com/spywarescanner/library/powerscan/index.phtml
  3. SWCS
    Offline

    SWCS Registered Member

    Ran HJT and fixed indicated items. Ran in Safe Mode and searched for indicated files - found neither. Tried to eliminate XXXToolbar through Add/Remove, but no go. Ran Ad-Aware again and this time it didn't lock up. Removed all items found in Ad-Aware, including several istbar. Went to Add/Remove and found XXXToolbar gone. Ran AVG and found istbar still there. Following is new HJT:

    Logfile of HijackThis v1.97.7
    Scan saved at 3:37:19 PM, on 6/25/2004
    Platform: Windows 2000 SP4 (WinNT 5.00.2195)
    MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

    Running processes:
    C:\WINNT\System32\smss.exe
    C:\WINNT\system32\winlogon.exe
    C:\WINNT\system32\services.exe
    C:\WINNT\system32\lsass.exe
    C:\WINNT\system32\svchost.exe
    C:\WINNT\System32\lexbces.exe
    C:\WINNT\system32\spoolsv.exe
    C:\PROGRA~1\Grisoft\AVG6\avgserv.exe
    C:\WINNT\System32\svchost.exe
    C:\WINNT\system32\regsvc.exe
    C:\WINNT\system32\MSTask.exe
    C:\WINNT\system32\stisvc.exe
    C:\WINNT\System32\WBEM\WinMgmt.exe
    C:\WINNT\System32\mspmspsv.exe
    C:\WINNT\system32\svchost.exe
    C:\WINNT\Explorer.EXE
    C:\WINNT\System32\spool\DRIVERS\W32X86\3\printray.exe
    C:\Program Files\QuickTime\qttask.exe
    C:\PROGRA~1\Grisoft\AVG6\avgcc32.exe
    C:\Program Files\Viewpoint\Viewpoint Manager\ViewMgr.exe
    C:\PROGRA~1\LEXMAR~1\ACMonitor_X73.exe
    C:\PROGRA~1\LEXMAR~1\AcBtnMgr_X73.exe
    C:\Program Files\Winamp\Winampa.exe
    C:\WINNT\system32\spool\DRIVERS\W32X86\3\E_S4I2G1.EXE
    C:\Program Files\AIM\aim.exe
    C:\Program Files\MSN Messenger\MsnMsgr.Exe
    C:\Program Files\Microsoft Office\Office\OSA.EXE
    C:\Program Files\WinZip\WZQKPICK.EXE
    C:\Program Files\Yahoo!\Messenger\ymsgr_tray.exe
    C:\WINNT\system32\wuauclt.exe
    C:\PROGRA~1\WINZIP\winzip32.exe
    C:\Documents and Settings\Administrator\Local Settings\Temp\HijackThis.exe

    R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://search.yahoo.com/search?p=%s
    O2 - BHO: (no name) - {02478D38-C3F9-4efb-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn\ycomp5_2_3_0.dll
    O2 - BHO: (no name) - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
    O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINNT\System32\msdxm.ocx
    O3 - Toolbar: Yahoo! Companion - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\ycomp5_2_3_0.dll
    O4 - HKLM\..\Run: [Synchronization Manager] mobsync.exe /logon
    O4 - HKLM\..\Run: [PrinTray] C:\WINNT\System32\spool\DRIVERS\W32X86\3\printray.exe
    O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
    O4 - HKLM\..\Run: [AVG_CC] C:\PROGRA~1\Grisoft\AVG6\avgcc32.exe /STARTUP
    O4 - HKLM\..\Run: [ViewMgr] C:\Program Files\Viewpoint\Viewpoint Manager\ViewMgr.exe
    O4 - HKLM\..\Run: [Lexmark X73 Button Monitor] C:\PROGRA~1\LEXMAR~1\ACMonitor_X73.exe
    O4 - HKLM\..\Run: [Lexmark X73 Button Manager] C:\PROGRA~1\LEXMAR~1\AcBtnMgr_X73.exe
    O4 - HKLM\..\Run: [WinampAgent] "C:\Program Files\Winamp\Winampa.exe"
    O4 - HKLM\..\Run: [EPSON Stylus CX5400] C:\WINNT\system32\spool\DRIVERS\W32X86\3\E_S4I2G1.EXE /P19 "EPSON Stylus CX5400" /O6 "USB004" /M "Stylus CX5400"
    O4 - HKLM\..\Run: [wcmdmgr] C:\WINNT\wt\updater\wcmdmgrl.exe -launch
    O4 - HKCU\..\Run: [Yahoo! Pager] C:\Program Files\Yahoo!\Messenger\ypager.exe -quiet
    O4 - HKCU\..\Run: [AIM] C:\Program Files\AIM\aim.exe -cnetwait.odl
    O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
    O4 - Global Startup: Microsoft Find Fast.lnk = C:\Program Files\Microsoft Office\Office\FINDFAST.EXE
    O4 - Global Startup: Office Startup.lnk = C:\Program Files\Microsoft Office\Office\OSA.EXE
    O4 - Global Startup: WinZip Quick Pick.lnk = C:\Program Files\WinZip\WZQKPICK.EXE
    O9 - Extra button: Messenger (HKLM)
    O9 - Extra 'Tools' menuitem: Yahoo! Messenger (HKLM)
    O9 - Extra button: AIM (HKLM)
    O16 - DPF: Yahoo! Pool 2 - http://download.games.yahoo.com/games/clients/y/potc_x.cab
    O16 - DPF: {166B1BCA-3F9C-11CF-8075-444553540000} (Shockwave ActiveX Control) - http://download.macromedia.com/pub/shockwave/cabs/director/sw.cab
    O16 - DPF: {33564D57-0000-0010-8000-00AA00389B71} - http://download.microsoft.com/download/F/6/E/F6E491A6-77E1-4E20-9F5F-94901338C922/wmv9VCM.CAB
    O16 - DPF: {41F17733-B041-4099-A042-B518BB6A408C} - http://a1540.g.akamai.net/7/1540/52...pple.com/bonnie/us/win/QuickTimeInstaller.exe
    O16 - DPF: {9F1C11AA-197B-4942-BA54-47A8489BB47F} (Update Class) - http://v4.windowsupdate.microsoft.com/CAB/x86/unicode/iuctl.CAB?38103.5141087963
    O16 - DPF: {CA034DCC-A580-4333-B52F-15F98C42E04C} (Downloader Class) - https://www.stopzilla.com/_download/Auto_Installer/dwnldr.cab
    O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab
    O16 - DPF: {EF791A6B-FC12-4C68-99EF-FB9E207A39E6} (McFreeScan Class) - http://download.mcafee.com/molbin/iss-loc/vso/en-us/tools/mcfscan/1,5,0,4352/mcfscan.cab
  4. IMM
    Offline

    IMM Spyware Fighter

    It would be best if you could tell me where AVG found it.

    The most likely scenario is that it's part of a system restore set.
    If that is the case then you can flush your restore points by turning SR off and rebooting - then turn it back on to create a new restore point.
    See this for how to do it - http://www.trendmicro.com/en/security/advisories/win_me_clean.htm

    Did u also run SpyBotSD ? I recommend having both.
  5. SWCS
    Offline

    SWCS Registered Member

    Booted up computer this morning. Ran Ad-Aware and AVG scan with no trace of the trojan. System now clean. Thank you for your help.

    SWCS
  6. IMM
    Offline

    IMM Spyware Fighter

    Glad you got it :)
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