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Problem Removing Bad Files/registry Entries


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#1 flamingpooh

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Posted 15 August 2006 - 08:47 PM

Hello,

I've been attempting to "fix" a friends laptop that's been affected by mulitple trojans/adware/spyware. I think I've removed most of them, but I'm having trouble with one. The registry entry calls for the file iifdb.dll to start up. I've found some hidden files in c:\windows\system32 called bdfii.ini, bdfii.bak, etc. I have cleared all attributes and deleted the files, but they just reappear after a few seconds. Using some process info tools, the iifdb.dll file is run by c:\windows\Explorer.EXE and c:\windows\winlogon.exe processes. Please help me resolve this. Here is the output from a HijackThis log:

Logfile of HijackThis v1.99.1
Scan saved at 8:27:48 PM, on 8/15/2006
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\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\WINDOWS\Explorer.EXE
C:\temp\hijackthis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = about:blank
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://securityresponse.symantec.com/avcenter/fix_homepage
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = about:blank
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page =
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page = about:blank
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page_bak = http://district18.info/
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page = about:blank
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
R3 - URLSearchHook: (no name) - _{8952A998-1E7E-4716-B23D-3DBE03910972} - (no file)
O2 - BHO: InfoDocReader Object - {A5B00A5B-073E-4246-AFF0-CCAE0D5BF6D1} - C:\WINDOWS\system32\iifdb.dll
O4 - HKLM\..\Run: [MSConfig] C:\WINDOWS\PCHealth\HelpCtr\Binaries\MSConfig.exe /auto
O8 - Extra context menu item: &AOL Toolbar Search - c:\program files\aol\aol toolbar 2.0\resources\en-US\local\search.html
O8 - Extra context menu item: &Google Search - res://c:\program files\google\GoogleToolbar2.dll/cmsearch.html
O8 - Extra context menu item: Backward Links - res://c:\program files\google\GoogleToolbar2.dll/cmbacklinks.html
O8 - Extra context menu item: Cached Snapshot of Page - res://c:\program files\google\GoogleToolbar2.dll/cmcache.html
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~4\OFFICE11\EXCEL.EXE/3000
O8 - Extra context menu item: Similar Pages - res://c:\program files\google\GoogleToolbar2.dll/cmsimilar.html
O8 - Extra context menu item: Translate into English - res://c:\program files\google\GoogleToolbar2.dll/cmtrans.html
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~4\OFFICE11\REFIEBAR.DLL
O9 - Extra button: AIM - {AC9E2541-2814-11d5-BC6D-00B0D0A1DE45} - C:\Program Files\AIM\aim.exe
O9 - Extra button: MUSICMATCH MX Web Player - {d81ca86b-ef63-42af-bee3-4502d9a03c2d} - http://wwws.musicmatch.com/mmz/openWebRadio.html (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
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://update.microsoft.com/microsoftupdat...b?1154988872295
O16 - DPF: {6E5A37BF-FD42-463A-877C-4EB7002E68AE} (Trend Micro ActiveX Scan Agent 6.5) - http://housecall65.trendmicro.com/housecal...ivex/hcImpl.cab
O20 - Winlogon Notify: iifdb - C:\WINDOWS\system32\iifdb.dll
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - Unknown owner - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: avast! Antivirus - Unknown owner - 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)


Thanks in advance,
flamingpooh

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#2 -David-

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Posted 16 August 2006 - 03:49 AM

Hello there and welcome to Bleeping Computer's security forum.
My name is David, I will be helping you with your log today.

It is a good idea to print off these instructions:
This will be useful as there is a possibility some of the instructions will need to be carried out where internet access is not available.
You may also like to save these instructions in word/notepad to the desktop where they can be easily found for the same reasons as above.
A print out of the instructions would be a good reference to make sure you don't yet lost.
Also, it is important that you complete the instructions in the right order, and also that you don't miss any steps out!
If you have any queries about the process or just general questions, just ask.

We are looking at a classic Vundo infection here.

Please download VundoFix.exe to your desktop.
Double-click VundoFix.exe to run it.
Put a check next to "Run VundoFix as a task".
You will receive a message saying vundofix will close and re-open in a minute or less - Click OK
When VundoFix re-opens, click "Scan for Vundo" button.
Once the scan is complete, right Click inside the listbox (white box) and click "add more files"
Copy and paste the 2 entries below into the top 2 boxes (no arrows):

--> C:\WINDOWS\system32\iifdb.dll
--> C:\WINDOWS\system32\bdfii.*

Click "Add Files" and click "Close Window".
Click the Remove Vundo button.
You will receive a prompt asking if you want to remove the files, click YES
Once you click yes, your desktop will go blank as it starts removing Vundo - this is normal.
When completed, it will prompt that it will shutdown your computer, click OK.
Turn your computer back on.
Please post the contents of C:\vundofix.txt and a new HiJackThis log.

David

#3 flamingpooh

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Posted 16 August 2006 - 06:47 PM

Thanks for your help! I realized that when I ran HijackThis the first time, I had configured a selective boot mode. I followed your instructions and it appears to have worked, but you may see some extra entries in the new HijackThis logfile since I reconfigured for normal boot mode. Here is the output from vundofix.txt and hijackthis log:


VundoFix V5.1.7

Checking Java version...

Java version is 1.4.2.3

Java version is 1.4.2.6

Java version is 1.5.0.4

Java version is 1.5.0.6

Scan started at 8:18:49 PM 8/9/2006

Listing files found while scanning....

No infected files were found.


VundoFix V6.0.0

Checking Java version...

Java version is 1.4.2.3

Java version is 1.4.2.6

Java version is 1.5.0.4

Java version is 1.5.0.6

Scan started at 5:23:25 PM 8/16/2006

Listing files found while scanning....

No infected files were found.


Beginning removal...

Attempting to delete c:\windows\system32\iifdb.dll
c:\windows\system32\iifdb.dll Has been deleted!

Attempting to delete c:\windows\system32\bdfii.ini
c:\windows\system32\bdfii.ini Has been deleted!

Performing Repairs to the registry.
Done!

VundoFix V6.0.0

Checking Java version...

Java version is 1.4.2.3

Java version is 1.4.2.6

Java version is 1.5.0.4

Java version is 1.5.0.6

Scan started at 6:31:29 PM 8/16/2006

Listing files found while scanning....

No infected files were found.


Hijackthis log:

Logfile of HijackThis v1.99.1
Scan saved at 6:39:03 PM, on 8/16/2006
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\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\LEXBCES.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\system32\LEXPPS.EXE
C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\WINDOWS\Explorer.EXE
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
C:\temp\hijackthis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = about:blank
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://securityresponse.symantec.com/avcenter/fix_homepage
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = about:blank
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page =
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page = about:blank
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page_bak = http://district18.info/
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page = about:blank
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
R3 - URLSearchHook: (no name) - _{8952A998-1E7E-4716-B23D-3DBE03910972} - (no file)
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKCU\..\Run: [SpybotSD TeaTimer] C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
O4 - Global Startup: Digimax Viewer 2.1.lnk.disabled
O8 - Extra context menu item: &AOL Toolbar Search - c:\program files\aol\aol toolbar 2.0\resources\en-US\local\search.html
O8 - Extra context menu item: &Google Search - res://c:\program files\google\GoogleToolbar2.dll/cmsearch.html
O8 - Extra context menu item: Backward Links - res://c:\program files\google\GoogleToolbar2.dll/cmbacklinks.html
O8 - Extra context menu item: Cached Snapshot of Page - res://c:\program files\google\GoogleToolbar2.dll/cmcache.html
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~4\OFFICE11\EXCEL.EXE/3000
O8 - Extra context menu item: Similar Pages - res://c:\program files\google\GoogleToolbar2.dll/cmsimilar.html
O8 - Extra context menu item: Translate into English - res://c:\program files\google\GoogleToolbar2.dll/cmtrans.html
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~4\OFFICE11\REFIEBAR.DLL
O9 - Extra button: AIM - {AC9E2541-2814-11d5-BC6D-00B0D0A1DE45} - C:\Program Files\AIM\aim.exe
O9 - Extra button: MUSICMATCH MX Web Player - {d81ca86b-ef63-42af-bee3-4502d9a03c2d} - http://wwws.musicmatch.com/mmz/openWebRadio.html (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
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://update.microsoft.com/microsoftupdat...b?1154988872295
O16 - DPF: {6E5A37BF-FD42-463A-877C-4EB7002E68AE} (Trend Micro ActiveX Scan Agent 6.5) - http://housecall65.trendmicro.com/housecal...ivex/hcImpl.cab
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - Unknown owner - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: Ati HotKey Poller - Unknown owner - C:\WINDOWS\System32\Ati2evxx.exe
O23 - Service: avast! Antivirus - Unknown owner - 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: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: iPodService - Apple Computer, Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: LexBce Server (LexBceS) - Lexmark International, Inc. - C:\WINDOWS\system32\LEXBCES.EXE

#4 -David-

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Posted 17 August 2006 - 04:42 AM

Hello there,

Start HijackThis, close all open windows leaving only HijackThis running. Place a check against each of the following if still present:

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = about:blank
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = about:blank
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page =
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page = about:blank
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page = about:blank
R3 - URLSearchHook: (no name) - _{8952A998-1E7E-4716-B23D-3DBE03910972} - (no file)


Click on Fix Checked when finished and exit HijackThis.
Make sure your Internet Explorer is closed when you click Fix Checked!

I see clean log now.
How is the system running?
David

#5 flamingpooh

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Posted 18 August 2006 - 06:23 PM

The laptop is working great now...

Thanks for your help

#6 -David-

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Posted 19 August 2006 - 01:26 PM

Glad I could help! :thumbsup:
The latest log is looking clean!
Follow this list and your potential for being infected again will be reduced dramatically.

Use an Anti Virus Software -
* It is very important that your computer has an anti-virus software running on your machine.
* This alone can save you a lot of trouble with malware in the future. See this link for a listing of some on line & their stand-alone anti virus programs:
* Click here for more information on -> Computer Safety On line - Anti-Virus
* I would recommend Grisoft's AVG or AVAST.
* These are the more secure and better ones.

Update your Anti Virus Software - It is imperitive that you update your Anti virus software at least once a week (Even more if you wish). If you do not update your anti virus software then it will not be able to catch any of the new variants that may come out.

Use a Firewall -
* I can not stress how important it is that you use a Firewall on your computer.
* Without a firewall your computer is susceptible to being hacked and taken over.
* Simply using a Firewall in its default configuration can lower your risk greatly.
* For an article on Firewalls and a listing of some available ones see the link below:
* Click here for more information on -> Computer Safety On line - Software Firewalls
* I would recommend ZoneAlarm as a firewall as it's easy to use.

Visit Microsoft's Windows Update Site Frequently -
* It is important that you visit http://www.windowsupdate.com regularly.
* This will ensure your computer has always the latest security updates available installed on your computer.
* If there are new updates to install, install them immediately, reboot your computer, and revisit the site until there are no more critical updates.

Next, if they're not already present, I would recommend the download and installation of some or all of the following programs (all free), and the updating of them regularly

Install Spybot© - Search and Destroy- Install and download Spybot - Search and Destroy with its TeaTimer option.
* This will provide real-time spyware & hijacker protection on your computer alongside your virus protection.
* You should also scan your computer with program on a regular basis just as you would an anti virus software.
* A tutorial on installing & using this product can be found here:
* Click here for more info -->Instructions for - Spybot S & D and Ad-aware

Install Lavasofts© Ad-Aware - Install and download Ad-Aware.
* You should also scan your computer with the program on a regular basis just as you would an anti virus software in conjunction with Spybot.
* A tutorial on installing & using this product can be found here:
* Click here for more info -->Instructions for - Spybot S & D and Ad-aware

Install Javacools© SpywareBlaster -
* SpywareBlaster will added a large list of programs and sites into your Internet Explorer and Firefox settings and that will protect you from running and downloading known malicious programs.
* A article on anti-malware products with links for this program and others can be found here:
* Click here for more info -->Computer Safety on line - Anti-Malware

Update all these programs regularly - Make sure you update all the programs I have listed regularly.
Without regular updates you WILL NOT be protected when new malicious programs are released.

If you have any addition questions just ask...
David




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