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Browser Hijack malware, possible rootkit


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2 replies to this topic

#1 JimbobDobalina

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Posted 28 May 2010 - 08:25 PM

A couple of days ago I got a blue screen crash - didn't catch the error as the computer rebooted straight away.
When windows reloaded, I found that searching google/bing/yahoo for any queries and clicking the result links opened random advertising and other search engine pages. I normally use Firefox, but found the same happened in IE as well. I get occasional popup windows opening with no user activity. These sometimes open when no browser was already open too.

Testing further with firefox, I found that if I typed the result url directly, I got the correct page, but if I clicked the link I got the hijacked page.
I also found that dragging the result link to the tab bar opens the correct page. Not all results get hijacked - it seems to be random.
Also, I am unable to get to windows update by any method I know. Both IE and Firefox give a 'connection reset' message for windowsupdate.microsoft.com

I uninstalled and got the latest firefox - no change (didn't expect one, but worth a try)
I noticed some new services got installed. Can't remember what they were, but I removed them. No change to system.
I have run the latest AVG, found a couple of trojans, but they were in old game files I haven't used in months. deleted them anyway. Listed as TrojanHorseDropper.Generic.BVNA

Have run rootkit revealer, found a heap of registry keys dated 25/05, the date of the infection.
A bunch of them have swearware in the path, and appear to be backups of Winsocks settings.
Also a lot of files dated today (27/05) that are hidden from windows API, but these appear to be temporary internet files from IE and firefox.
Have attached the complete log.

I used the windows cd to run the recovery console and ran fixmbr. This seems to have slowed the rate of browser pages that get hijacked, but some still do.
I still get the odd random browser window that opens by itself, but these are also less common.

Have also run DDS and GMER as per instructions on this site. Logs attached.

So, hope one of you good folk can help. Otherwise I'll have to reinstall everything I guess. Out of interest, does this even fix rootkits?

Don't know if this is related but I even though I can browse these forums on my pc I am unable to create a post. I have had to post this from another PC.

Update:

I think I have fixed this infection. I installed MS security essentials. It found win32/alureon.h and win32/ertfor.b and was able to remove them both.
I also rebuilt the tcp/ip stack and reset the dns addresses to the correct ones, as these had been modified.

System appears to be working normally - I can now run windows updates just fine, web searches are no longer being hijacked, and random popups appear to be gone as well.

Attached Files


Edited by Budapest, 29 May 2010 - 07:51 PM.
Posts merged ~BP


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#2 schrauber

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Posted 31 May 2010 - 01:58 PM

Hello and welcome to Bleeping Computer

We apologize for the delay in responding to your request for help. Here at Bleeping Computer we get overwhelmed at times, and we are trying our best to keep up. Please note that your topic was not intentionally overlooked. Our mission is to help everyone in need, but sometimes it takes just a little longer to get to every request for help. No one is ignored here.

If you have since resolved the original problem you were having, we would appreciate you letting us know. If not please perform the following steps below so we can have a look at the current condition of your machine.

If you have not done so, include a clear description of the problems you're having, along with any steps you may have performed so far.

Upon completing the steps below another staff member will review and take the steps necessary with you to get your machine back in working order clean and free of malware.

If you have already posted a DDS log, please do so again, as your situation may have changed.
Use the 'Add Reply' and add the new log to this thread.


Thanks and again sorry for the delay.

We need to see some information about what is happening in your machine. Please perform the following scan:
  • Download DDS by sUBs from one of the following links. Save it to your desktop.
  • Double click on the DDS icon, allow it to run.
  • A small box will open, with an explaination about the tool. No input is needed, the scan is running.
  • Notepad will open with the results.
  • Follow the instructions that pop up for posting the results.
  • Close the program window, and delete the program from your desktop.
Please note: You may have to disable any script protection running if the scan fails to run. After downloading the tool, disconnect from the internet and disable all antivirus protection. Run the scan, enable your A/V and reconnect to the internet.

Information on A/V control HERE



Please download GMER from one of the following locations and save it to your desktop:
  • Main Mirror
    This version will download a randomly named file (Recommended)
  • Zipped Mirror
    This version will download a zip file you will need to extract first. If you use this mirror, please extract the zip file to your desktop.
  • Disconnect from the Internet and close all running programs.
  • Temporarily disable any real-time active protection so your security programs will not conflict with gmer's driver.
  • Double-click on the randomly named GMER file (i.e. n7gmo46c.exe) and allow the gmer.sys driver to load if asked.
  • Note: If you downloaded the zipped version, extract the file to its own folder such as C:\gmer and then double-click on gmer.exe.


  • GMER will open to the Rootkit/Malware tab and perform an automatic quick scan when first run. (do not use the computer while the scan is in progress)
  • If you receive a WARNING!!! about rootkit activity and are asked to fully scan your system...click NO.
  • Now click the Scan button. If you see a rootkit warning window, click OK.
  • When the scan is finished, click the Save... button to save the scan results to your Desktop. Save the file as gmer.log.
  • Click the Copy button and paste the results into your next reply.
  • Exit GMER and re-enable all active protection when done.
-- If you encounter any problems, try running GMER in Safe Mode.
regards,
schrauber

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If I've not posted back within 48 hrs., feel free to send a PM with your topic link. Thank you!

If I have helped you then please consider donating to continue the fight against malware Posted Image

#3 schrauber

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Posted 04 June 2010 - 02:27 PM

Due to the lack of feedback, this topic is now closed.
If you need this topic reopened, please PM a staff member and we will reopen it for you (include the address of this thread in your request). This applies to the original topic starter only. Everyone else with similar problems, please start a new topic.
regards,
schrauber

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If I've not posted back within 48 hrs., feel free to send a PM with your topic link. Thank you!

If I have helped you then please consider donating to continue the fight against malware Posted Image




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