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How to get rid of nsrbgxod.bak file?

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Name: swift195
Date: May 28, 2009 at 09:12:30 Pacific
OS: Windows XP
Subcategory: Viruses
Comment:

Each time I click on a tab on any website, a new home page opens up. I think the culprit is nsrbgxod.bak file, lodged in the Temp folder. I am unable to get rid of it!

Can anyone help please?



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Response Number 1
Name: jdk (by neoark)
Date: May 28, 2009 at 09:25:50 Pacific
Reply:

Tried scanning with antivirus?

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Response Number 2
Name: swift195
Date: May 28, 2009 at 09:36:36 Pacific
Reply:

Yes, used Trend Micro antivirus. Thanks.


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Response Number 3
Name: jdk (by neoark)
Date: May 28, 2009 at 09:53:05 Pacific
Reply:

Post its scan log of what it detected.

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Response Number 4
Name: swift195
Date: May 28, 2009 at 12:09:22 Pacific
Reply:

The last scan log May 27th shows Troj_rootkit.fx quarantined. In today's scan (May 28) no virus has been detected. No log report. Tried to manually quarantine nsrbgxod file, but failed.

Thanks.


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Response Number 5
Name: jdk (by neoark)
Date: May 28, 2009 at 12:20:20 Pacific
Reply:

Can you please post your AVZ log:
Note: Run AVZ in windows normal mode. If avz.exe doesn't start, then try to rename the file avz.exe to something else and try to run it again.

1) To create the logfile, download AVZ by clicking HERE. Please save this file to your desktop or "My Documents" folder.

2) Next, unpack the file to a new folder using the Compressed (zipped) folders wizard built into Windows XP/Vista, or a zip utility of your choice.

3) Once you have unpacked the contents of the zip archive, please launch the file AVZ.exe by double clicking on it or right clicking and selecting Open.
Note: If you are running Windows vista launch AVZ.exe by right clicking and selecting Run as Administrator

You should now see the main window of the AVZ utility. Please navigate to File->Custom Scripts. Copy the script below by using the keyboard shortcut CTRL+C or the corresponding option via right click.

begin
ExecuteStdScr(3);
RebootWindows(true);
end.

Paste the script into the execution window by using CTRL+V keyboard shortcut, or the "paste" option via the right click menu. Click on Run to run the script, the PC will reboot. After the reboot the LOG subfolder is created in the folder with AVZ, with a file called virusinfo_syscure.zip inside. Upload that file to rapidshare.com and paste the link here.

Image Tutorial

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Response Number 6
Name: swift195
Date: May 28, 2009 at 13:51:44 Pacific
Reply:

I am not too tech savvy, but can you please tell me what could be the problem? What is AVZ log? Thanks.


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Response Number 7
Name: jdk (by neoark)
Date: May 28, 2009 at 13:57:51 Pacific
Reply:

AVZ/Hijackthis log is like medical report of your computer without which it will be hard to tell about the problem. As long as you have basic knowledge and can follow direction we can try to remove infection manually. This are your other option pay someone to remove it, format reinstall OS or call up Trend Micro antivirus and see if they can help you.

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Response Number 8
Name: swift195
Date: May 28, 2009 at 14:22:17 Pacific
Reply:

Thanks. Here is the link.

http://rapidshare.com/files/2383152...


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Response Number 9
Name: jdk (by neoark)
Date: May 28, 2009 at 14:41:43 Pacific
Reply:

You are infected badly. Do you want to proceed or look at other options?

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Response Number 10
Name: swift195
Date: May 28, 2009 at 14:47:35 Pacific
Reply:

If the process is not very technical then I can try with your help. Please let me know. Thanks.


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Response Number 11
Name: jdk (by neoark)
Date: May 28, 2009 at 15:06:23 Pacific
Reply:

Follow these steps in order numbered:
Note: Don't follow/skip any of these steps if its too technical for you, you might mess up your system more.

1) Run this script in AVZ like before. Your computer will reboot.

begin
SetAVZGuardStatus(True);
SearchRootkit(true, true);
 QuarantineFile('C:\Documents and Settings\subbarao gunnam\Start Menu\Programs\Startup\ChkDisk.dll','');
 QuarantineFile('C:\DOCUME~1\NETWOR~1\protect.dll','');
 QuarantineFile('C:\WINDOWS\system32\autochk.dll','');
 QuarantineFile('c:\windows\9129837.exe','');
 DeleteFile('c:\windows\9129837.exe');
 DeleteFile('C:\WINDOWS\system32\autochk.dll');
 DeleteFile('C:\DOCUME~1\NETWOR~1\protect.dll');
 DeleteFile('C:\Documents and Settings\subbarao gunnam\Start Menu\Programs\Startup\ChkDisk.dll');
BC_ImportAll;
ExecuteSysClean;
BC_Activate;
RebootWindows(true);
end.

2) After reboot. Attach a Combofix log, please review and follow these instructions carefully.

Download it here -> http://download.bleepingcomputer.co...

Before Saving it to Desktop, please rename it to something like 123.exe to stop malware from disabling it.

Now, please make sure no other programs are running, close all other windows and pause Antivirus/Sypware programs (http://www.bleepingcomputer.com/forums/topic114351.html Programs to disable) until after the scanning and removal process has taken place.

Please double click on the file you downloaded. Follow the onscreen prompts to start the scan. Once the scanning process has started please DO NOT click on the Combofix window or attempt to use your computer as this can cause the scanning process to stall. It may take a while to complete scanning and this is normal.

You will be disconnected from the internet and your desktop icons/toolbars will disappear during scanning, do not worry, this is normal and it will be restored after scanning has completed.

Combofix will create a logfile and display it after your computer has rebooted. Usually located in c:\combofix.txt, please upload that file to rapidshare.com and paste the link here.

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Response Number 12
Name: swift195
Date: May 29, 2009 at 10:56:00 Pacific
Reply:

I appreciate your help. Thanks again!


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Response Number 13
Name: jdk (by neoark)
Date: May 29, 2009 at 11:47:33 Pacific
Reply:

Got it fixed?

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Response Number 14
Name: swift195
Date: June 4, 2009 at 15:39:13 Pacific
Reply:

Yes, got it fixed by Trend micro. Again, Thanks for your help!


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