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Trojan Vundo


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8 replies to this topic

#1 jsv

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Posted 29 December 2008 - 06:34 PM

Hello good people,

I've been dealing with vundo for a few days now. I've read several of the posts on Bleeping Computer and see that it can be tricky to get rid of. I've ran Super Anti-Spyware and it cleared up 34 items. Malwarebytes' Anti-Malware keeps saying that its finding one incident of a trojan - it says it will delete upon reboot. I click "ok" to allow it to reboot but the program doesn't close, leaving me to manually reboot. Upon reboot, the computer just comes up with the Malwarebytes window to scan again instead of deleting the offending file. At this point, I'm not even sure I've got an infection since I've also downloaded and used Norton's FixVundo.exe and it came up with nothing.

I'm running Windows XP Home edition.

I'm attaching my Malwarebytes' log for simplicity. Thank you in advance for anyone's help.

Malwarebytes' Anti-Malware 1.31
Database version: 1550
Windows 5.1.2600 Service Pack 2

12/29/2008 2:50:41 PM
mbam-log-2008-12-29 (14-50-41).txt

Scan type: Full Scan (C:\|)
Objects scanned: 171453
Time elapsed: 54 minute(s), 58 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 1
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 0

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
HKEY_CLASSES_ROOT\CLSID\{6d794cb4-c7cd-4c6f-bfdc-9b77afbdc02c} (Trojan.Vundo) -> Delete on reboot.

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
(No malicious items detected)

Edited by jsv, 29 December 2008 - 06:35 PM.


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#2 garmanma

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Posted 29 December 2008 - 07:32 PM

1. Please print these instructions as they will be needed later when Internet access is not available.

2. Save these instructions in word or notepad to the desktop where they can be easily found.

3. Download Vundo Fix:
http://www.atribune.org/ccount/click.php?id=4
and save it to your desktop.

4. When it has completed downloading, double-click VundoFix.exe to run it.

5. Click the Scan for Vundo button.

6. Once it's done scanning, click the Remove Vundo button.

7. You will now receive a prompt asking if you want to remove the files, click the YES button. Once you click yes, your desktop will go blank as it starts removing Vundo.

8. When completed, it will prompt that it will shutdown your computer, click the OK button.

9. When the computer has shutdown, turn your computer back on.

The WinFixer and Vundo infection should now be removed from your computer.



If you are still having a problem then please perform the following steps:

Note: This step should only be used if the instructions in the previous steps did not remove the infection:

1. Download VirtumundoBegone:
http://www.bleepingcomputer.com/malware-re...%3C%DL2_LNK%%3E

and save it to your desktop.

2. Now reboot into Safe Mode.

1. This can be done tapping the F8 key as soon as you start your computer

2. You will be brought to a menu where you can choose to boot into safe mode.

3. Select safe mode with networking using your arrow keys on the keyboard and then press enter.

4. When you computer reaches the desktop make sure you log in as the same user which you had performed the previous steps,

3. Once you are logged into safe mode, double-click VirtumundoBeGone.exe file you just downloaded and follow the instructions.

4. Exit when it has finished, and reboot back to normal mode.

The WinFixer and Vundo infection should now be removed from your computer. Conclusion
Mark
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#3 jsv

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Posted 29 December 2008 - 10:54 PM

Thanks for your help, Mark!

I ran Vundofix.exe and it came up with nothing.

I downloaded VirtumondoBegone to my desktop and tried to boot to safe mode hitting F8 the whole time upon restart, and all that comes up is this:

Please select boot device:

1st Floppy Drive
PM-HL-DT-ST-DVDRAM
3M-ST3250820AS
Generic USB SD Reader
Generic USB CF Reader
Generic USB SM Reader
Generic USB MS Reader

I never get the "boot to safe mode" option and I tried it with all but the floppy drive option. All I get is a black screen saying "Invalid boot.ini file. Booting from C:\WINDOWS" and then it just boots to normal mode.

Can I use VirtumondoBegone in normal mode or only in safe mode?

Thanks again for your assistance!

#4 garmanma

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Posted 30 December 2008 - 11:08 AM

Can I use VirtumondoBegone in normal mode or only in safe mode?

No, let's try something else
----------------------------------

Please download Dr.Web CureIt & save it to your desktop. 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".

Scan with Dr.Web CureIt as follows:
  • Double-click on launch.exe to open the program and click Start. (There is no need to update if you just downloaded the most current version
  • Read the Virus check by DrWeb scanner prompt and click Ok where asked to Start scan now? Allow the setup.exe to load if asked by any of your security programs.
  • The Express scan will automatically begin.
    (This is a short scan of files currently running in memory, boot sectors, and targeted folders).
  • If prompted to dowload the Full version Free Trial, ignore and click the X to close the window.
  • If an infected object is found, you will be prompted to move anything that cannot be cured. Click Yes to All.
  • When complete, click Select All, then choose Cure > Move incurable.
    (This will move any detected files to the C:\Documents and Settings\userprofile\DoctorWeb\Quarantine folder if they can't be cured)
  • Now put a check next to Complete scan to scan all local disks and removable media.
  • In the top menu, click Settings > Change settings, and UNcheck "Heuristic analysis" under the "Scanning" tab, then click Ok.
  • Back at the main window, click the green arrow "Start Scanning" button on the right under the Dr.Web logo.
  • When the scan is complete, a message will be displayed at the bottom indicating if any viruses were found.
  • Click "Yes to all" if asked to cure or move the file(s) and select "Move incurable".
  • In the top menu, click file and choose save report list.
  • Save the DrWeb.csv report to your desktop.
  • Exit Dr.Web Cureit when done.
  • Important! Reboot your computer because it could be possible that files in use will be moved/deleted during reboot.
  • After reboot, post the contents of the log from Dr.Web in your next reply. (You can use Notepad to open the DrWeb.cvs report)

Mark
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why won't my laptop work?

Having grandkids is God's way of giving you a 2nd chance because you were too busy working your butt off the 1st time around
Do not send me PMs with problems that should be posted in the forums. Keep it in the forums, so everyone benefits
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#5 jsv

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Posted 30 December 2008 - 12:29 PM

Hi Mark,

I still cannot get my system to boot into safe mode. :thumbsup: When I hit F8 upon restart, the same menu comes up as above. On my old computer running Windows XP Pro, I had no troubles booting to safe mode. I still get the black screen that tells me "Invalid Boot.ini file. Booting from c:\WINDOWS". I'm really hoping that I don't have to reformat the HD.

Thanks again!

Edited by jsv, 30 December 2008 - 12:38 PM.


#6 jsv

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Posted 30 December 2008 - 02:09 PM

I just ran SuperAntiSpyware and it came up with the following (which it originally had detected and "successfully quarantined and deleted").

SUPERAntiSpyware Scan Log
http://www.superantispyware.com

Generated 12/30/2008 at 10:38 AM

Application Version : 4.23.1006

Core Rules Database Version : 3687
Trace Rules Database Version: 1663

Scan type : Complete Scan
Total Scan Time : 00:49:06

Memory items scanned : 356
Memory threats detected : 0
Registry items scanned : 6053
Registry threats detected : 5
File items scanned : 22565
File threats detected : 1

Unclassified.Unknown Origin
HKLM\Software\Classes\CLSID\{6D794CB4-C7CD-4c6f-BFDC-9B77AFBDC02C}
HKCR\CLSID\{6D794CB4-C7CD-4C6F-BFDC-9B77AFBDC02C}
HKCR\CLSID\{6D794CB4-C7CD-4C6F-BFDC-9B77AFBDC02C}\InprocServer32
HKCR\CLSID\{6D794CB4-C7CD-4C6F-BFDC-9B77AFBDC02C}\InprocServer32#ThreadingModel
C:\WINDOWS\SYSTEM32\QOMGFGAY.DLL
HKCR\CLSID\{6D794CB4-C7CD-4C6F-BFDC-9B77AFBDC02C}


Hmmm.... and I thought this had already been dealt with. Upon reboot, I scanned again using SuperAnti-Spyware and it came up with EXACTLY the same log.

Should I just go ahead and post my HJT log in the HJT threads?

Again thank you so much for your time and help, Mark!

#7 garmanma

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Posted 30 December 2008 - 03:40 PM

Should I just go ahead and post my HJT log in the HJT threads?

That would probably be best
Good luck and be patient
Mark
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why won't my laptop work?

Having grandkids is God's way of giving you a 2nd chance because you were too busy working your butt off the 1st time around
Do not send me PMs with problems that should be posted in the forums. Keep it in the forums, so everyone benefits
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#8 jsv

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Posted 30 December 2008 - 09:09 PM

Thanks Mark!

Just thought I'd update. I ran Super Anti-spyware again today but this time it ran a new update and lo and behold it seems that my system is clean. Looks like they've updated the definitiions to include this persistent Vundo trojan.

I will still post in a the HJT thread to make sure my system is clean.

Edited by jsv, 30 December 2008 - 09:10 PM.


#9 Orange Blossom

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Posted 30 December 2008 - 09:47 PM

Hello jsv,

Now that you have a log posted here: http://www.bleepingcomputer.com/forums/t/190815/vundo-trojan/ you should NOT make further changes to your computer (install/uninstall programs, use special fix tools, delete files, edit the registry, etc) unless advised by a HJT Team member, nor should you ask for help elsewhere. Doing so can result in system changes which may not show in the log you already posted. Further, any modifications you make on your own may cause confusion for the helper assisting you and could complicate the malware removal process which would extend the time it takes to clean your computer.

From this point on the HJT Team should be the only members that you take advice from, until they have verified your log as clean.

Please be patient. It may take a while to get a response because the HJT Team members are EXTREMELY busy working logs posted before yours. They are volunteers who will help you out as soon as possible. Once you have made your post and are waiting, please DO NOT make another reply until it has been responded to by a member of the HJT Team. Generally the staff checks the forum for postings that have 0 replies as this makes it easier for them to identify those who have not been helped. If you post another response there will be 1 reply. A team member, looking for a new log to work may assume another HJT Team member is already assisting you and not open the thread to respond.

If after 5 days you still have received no response, then post a link to your HJT log in the thread titled "Haven't Had A Reply In Five Days?".

To avoid confusion, I am closing this topic. Good luck with your log.

Orange Blossom :thumbsup:
Help us help you. If HelpBot replies, you MUST follow step 1 in its reply so we know you need help.

Orange Blossom

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