Jump to content


 


Register a free account to unlock additional features at BleepingComputer.com
Welcome to BleepingComputer, a free community where people like yourself come together to discuss and learn how to use their computers. Using the site is easy and fun. As a guest, you can browse and view the various discussions in the forums, but can not create a new topic or reply to an existing one unless you are logged in. Other benefits of registering an account are subscribing to topics and forums, creating a blog, and having no ads shown anywhere on the site.


Click here to Register a free account now! or read our Welcome Guide to learn how to use this site.

Photo

Win32/brontok.c


  • Please log in to reply
2 replies to this topic

#1 jay v

jay v

  • Members
  • 4 posts
  • OFFLINE
  •  
  • Local time:12:20 AM

Posted 03 July 2007 - 10:52 PM

Please help me.

I am having a problem with w32/brontok.c worm. I tried norton, avg, avast, bitdefender. They all can heal it, but the worm keeps coming back and replicates itself. I've already formatted my PC twice, but it seems that the worm is embedded in my data files which i cannot afford to lose.

I desperately need help.

Here is my HijackThis log.

Thanks.

Jay V

-----

Logfile of HijackThis v1.99.1
Scan saved at 9:44:27 AM, on 7/4/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.5730.0011)

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\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\Explorer.exe
C:\WINDOWS\system32\ctfmon.exe
C:\WINDOWS\htpatch.exe
C:\Program Files\Analog Devices\SoundMAX\SMTray.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Program Files\Adobe\Acrobat 7.0\Distillr\Acrotray.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Common Files\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\Program Files\Analog Devices\SoundMAX\SMAgent.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\WINDOWS\system32\wscntfy.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Common Files\Microsoft Shared\Source Engine\OSE.EXE
C:\Program Files\HijackThis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://us.rd.yahoo.com/customize/ie/defaul...rch/search.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://us.rd.yahoo.com/customize/ie/defaul...//www.yahoo.com
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.yahoo.com/
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 Bar = http://us.rd.yahoo.com/customize/ie/defaul...rch/search.html
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
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://us.rd.yahoo.com/customize/ie/defaul...//www.yahoo.com
R3 - URLSearchHook: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\PROGRA~1\Yahoo!\Companion\Installs\cpn\yt.dll
F2 - REG:system.ini: Shell=Explorer.exe "C:\WINDOWS\sembako-clzjlkg.exe"
O2 - BHO: &Yahoo! Toolbar Helper - {02478D38-C3F9-4efb-9B51-7695ECA05670} - C:\PROGRA~1\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: Yahoo! IE Services Button - {5BAB4B5B-68BC-4B02-94D6-2FC0DE4A7897} - C:\Program Files\Yahoo!\Common\yiesrvc.dll
O2 - BHO: AcroIEToolbarHelper Class - {AE7CD045-E861-484f-8273-0445EE161910} - C:\Program Files\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\PROGRA~1\Yahoo!\Companion\Installs\cpn\yt.dll
O3 - Toolbar: Adobe PDF - {47833539-D0C5-4125-9FA8-0819E2EAAC93} - C:\Program Files\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll
O4 - HKLM\..\Run: [CorelDRAW Graphics Suite 11b] C:\Program Files\Corel\Corel Graphics 12\Languages\EN\Programs\Registration.exe /title="CorelDRAW Graphics Suite 12" /date=071007 serial=DR12CRM-5257227-SYG lang=EN
O4 - HKLM\..\Run: [HTpatch] C:\WINDOWS\htpatch.exe
O4 - HKLM\..\Run: [Smapp] C:\Program Files\Analog Devices\SoundMAX\SMTray.exe
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [Acrobat Assistant 7.0] "C:\Program Files\Adobe\Acrobat 7.0\Distillr\Acrotray.exe"
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [Yahoo! Pager] "C:\PROGRA~1\Yahoo!\MESSEN~1\YAHOOM~1.EXE" -quiet
O4 - Global Startup: Adobe Acrobat Speed Launcher.lnk = ?
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: Yahoo! Services - {5BAB4B5B-68BC-4B02-94D6-2FC0DE4A7897} - C:\Program Files\Yahoo!\Common\yiesrvc.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: Yahoo! Messenger - {E5D12C4E-7B4F-11D3-B5C9-0050045C3C96} - C:\PROGRA~1\Yahoo!\MESSEN~1\YPager.exe (file missing)
O9 - Extra 'Tools' menuitem: Yahoo! Messenger - {E5D12C4E-7B4F-11D3-B5C9-0050045C3C96} - C:\PROGRA~1\Yahoo!\MESSEN~1\YPager.exe (file missing)
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
O11 - Options group: [INTERNATIONAL] International*
O12 - Plugin for .spop: C:\Program Files\Internet Explorer\Plugins\NPDocBox.dll
O16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} (Installation Support) - C:\Program Files\Yahoo!\Common\Yinsthelper.dll
O23 - Service: Adobe LM Service - Adobe Systems - C:\Program Files\Common Files\Adobe Systems Shared\Service\Adobelmsvc.exe
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: avast! Antivirus - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe" /service (file missing)
O23 - Service: avast! Web Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe" /service (file missing)
O23 - Service: SoundMAX Agent Service (SoundMAX Agent Service (default)) - Analog Devices, Inc. - C:\Program Files\Analog Devices\SoundMAX\SMAgent.exe

BC AdBot (Login to Remove)

 


m

#2 Yourhighness

Yourhighness

    The BSG Malware Fighter


  • Malware Response Team
  • 7,943 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:Hamburg
  • Local time:05:20 PM

Posted 10 July 2007 - 09:30 AM

Hello jay v and welcome to BleepingComputer!

My name is Johannes and I will be dealing with your log today.
Please note that comments are made in green, links are in red and important things are outlined by using the blue color.

Please also take note of the following:
  • I will start working on your Malware issues, this may or may not, solve other issues you have with your machine.
  • The fixes are specific to your problem and should only be used for this issue on this machine
  • The process is not instant. Please continue to review my answers until I tell you your machine is clear. Absence of symptoms does not mean that everything is clear.
  • If you don't know, stop and ask! Don't keep going on.
  • Please reply to this thread. Do not start a new topic.
Please give me some time to look over your log and I will get back to you as soon as possible.
Thanks,
Johannes

"How did I get infected?" - "Safe-hex" - Member of UNITE -
Posted Image


#3 Yourhighness

Yourhighness

    The BSG Malware Fighter


  • Malware Response Team
  • 7,943 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:Hamburg
  • Local time:05:20 PM

Posted 11 July 2007 - 03:44 PM

Hi jay v,

Step #1

Please download CleanX-II.exe - Bleepingcomputer or from the alternate download link: CleanX-II.exe - Techsupportforum
  • Double click CleanX-II.exe then follow the prompts.
  • Reboot and post the log that it creates
Step #2

Run HijackThis, press Scan, and put a check mark next to all these entries:

F2 - REG:system.ini: Shell=Explorer.exe "C:\WINDOWS\sembako-clzjlkg.exe"

Close all other windows and browsers, and press the Fix Checked button.

Step #3

Please now delete the following files and folders (NB: if you cannot find a file or folder that is just fine):

C:\WINDOWS\sembako-clzjlkg.exe

Step #4

Download and install AVG Anti-Spyware v7.5.
  • After download, double click on the file to launch the install process.
  • Choose a language, click "OK" and then click "Next".
  • Read the "License Agreement" and click "I Agree".
  • Accept default installation path: C:\Program Files\Grisoft\AVG Anti-Spyware 7.5, click "Next", then click "Install".
  • After setup completes, click "Finish" to start the program automatically or launch AVG Anti-Spyware by double-clicking its icon on your desktop or in the system tray.
  • Connect to the Internet, go back to AVG Anti-Spyware, select the "Update" button and click "Start update". Wait until you see the "Update successful" message. If you are having problems with the updater, manually update with the AVG Anti-Spyware Full database installer from here.
  • Exit AVG Anti-Spyware when done - DO NOT perform a scan yet.
Reboot your computer in "SAFE MODE" using the F8 method. To do this, restart your computer and after hearing your computer beep once during startup (but before the Windows icon appears) press the F8 key repeatedly. A menu will appear with several options. Use the arrow keys to navigate and select the option to run Windows in "Safe Mode". (Note: When run in safe mode, sometimes the GUI is larger than the screen and the buttons at the bottom are partly or completely hidden, making them unaccessible for doing a scan. If this is the case, then you may have to run your scan in normal mode and advise your helper afterwards.)

Scan with AVG Anti-Spyware as follows:
  • Click on the "Scanner" button and choose the "Settings" tab.
  • Under "How to act?", click on "Recommended actions" and choose "Quarantine" to set default action for detected malware.
  • Under "How to Scan?", "Possibly unwanted software", and What to Scan?" leave all the default settings.
  • Under "Reports" select "Automatically generate report after every scan" and UNcheck "Only if threats were found".
  • Click the "Scan" tab to return to scanning options.
  • Click "Complete System Scan" to start.
  • When the scan has finished, it should automatically be set to Quarantine--if not click on Recommended Action and set it there.
  • You will also be presented with a list of infected objects found. Click "Apply all actions" to place the files in Quarantine.
IMPORTANT! Do not save the report before you have clicked the Apply all actions button. If you do, the log that is created will indicate "No action taken", making it more difficult to interpret the report. So be sure you save it only AFTER clicking the "Apply all actions" button.
  • Click on "Save Report" to view all completed scans. Click on the most recent scan you just performed and select "Save report as" - the default file name will be in date/time format as follows: Report-Scan-yyyymmdd-hhmmss.txt. Save to your desktop. A copy of each report will also be saved in C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\Reports\
  • Exit AVG Anti-Spyware when done, reboot normally and submit the log report in your next response.
Note: Close all open windows, programs, and DO NOT USE the computer while AVG Anti-Spyware is scanning. Doing so can hamper AVG Anti-Spyware's ability to clean properly and may result in reinfection.

AVG Anti-Spyware is free for 30 days and all the extensions of the full version will be activated. After the 30 day trial, active protection extensions will be deactivated and the program will turn into a feature-limited freeware version that you can can continue to use as an on-demand scanner or you may purchase a license to use the full version.

Please post back with the logs from: CleanX-II, Report-Scan-yyyymmdd-hhmmss.txt (AVG Antispyware) and a fesh log from HijackThis.

Thanks

"How did I get infected?" - "Safe-hex" - Member of UNITE -
Posted Image





0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users