backdoor:win32/zonebac.gen!F detected

Dell Inspiron 600m notebook
July 24, 2009 at 17:06:37
Specs: Windows XP , 1GB Ram
Hi, I recently have had the backdoor:win32/zonebac.gen!F detected on my computer and am asking for help to remove it. Symptoms I am getting include an audio advertisement or sound clip that plays when no windows are open, and when I click on some links in yahoo after searching, they take me to a different page than what it should, usually some advertising page. I saw in other posts that people have used hijackthis and findAWF and posted logs. I have ran both and have the logs ready. Can you help me please?

See More: backdoor:win32/zonebac.gen!F detected

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July 25, 2009 at 07:33:56
Do you have antivirus installed on your system?

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July 25, 2009 at 07:57:02
I did not have antivirus when I got the virus, but since then I used windows live onecare, which is what told me that I had the virus. It said it disabled the zonebac virus but was unable to remove it, and I have still been having problems even tho it does not get detected on system scans now.

Thank you for your help!

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July 25, 2009 at 08:09:51
Download and run Kaspersky AVP tool in safe mode:
Once you download and start the tool in safe mode:
# Check below options:

    * Select all the objects/places to be scanned. 

# Click Scan
# Fix what it detects
# Zip/Rar Scan log/Summary and upload it to Post download link in your next message.

Illustrated tutorial:

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Related Solutions

July 26, 2009 at 09:27:53
Sorry for the delay, the scan took a while. Here is the link:

Just FYI, I am still having the same issues as described before.

Thank you for your time.

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July 26, 2009 at 10:08:35
Note: I can help you remove malware manually. Please avoid installing/uninstalling or updating any programs and attempting any unsupervised fixes or scans. This can make helping you impossible. First Track this topic. Then follow:

1) Can you please post your AVZ log:
Note: Run AVZ in windows normal mode and make sure you are connect to internet. If avz.exe doesn't start, then try to rename the file avz.exe to something else and try to run it again. Make sure you have your web browser open in background before following the steps below.

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

ii) 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.

iii) 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.


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 inside. Upload that file to and paste the link here.

Image Tutorial

2) Download and Run DDS which will create a Pseudo HJT Report as part of its log: DDS Tool Download Link. When done, DDS will open two (2) logs

   1. DDS.txt
   2. Attach.txt

Upload the logs to and paste download link in your next reply.
Note: Disable any script-blocking programs and then double-click on the DDS.scr icon to start the program. If you did not disable a script-blocker that may be part of your antimalware program, you may receive a warning from your antimalware product asking if you would like DDS.scr to run. Please allow it to do so.

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July 26, 2009 at 22:50:36

there ya go.

thanks again. I might not be able to reply for a little bit, I am going on vacation. Should I still just reply the same way I have been or do I need to alert you some other way when I am back?

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July 27, 2009 at 08:04:20
Follow these Steps in order numbered. Don't proceed to next step unless you have successfully completed previous step:

1) Run this script in AVZ like before, your computer will reboot:

SearchRootkit(true, true);
  DeleteFileMask('C:\Windows\tasks\','{*.job',false );

2) Redo Response Number 5 Step 1 (AVZ log).

3) Follow these steps in order numbered:

1) Download GMER:
[This version will download a randomly named file (Recommended).]

2) Disconnect from the Internet and close all running programs.

3) Temporarily disable any real-time active protection so your security programs will not conflict with gmer's driver.

4) Double-click on the randomly named GMER file (i.e. n7gmo46c.exe) and allow the gmer.sys driver to load if asked.

5) 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)

6) If you receive a WARNING!!! about rootkit activity and are asked to fully scan your NO.

7) Now click the Scan button. If you see a rootkit warning window, click OK.

8) When the scan is finished, click the Save... button to save the scan results to your Desktop. Save the file as gmer.log and upload it Post the download link to the uploaded file in your post.

9) Exit GMER and re-enable all active protection when done.

Note: Please give me the exact name of the file you downloaded in step 1 + post your log from step 8 in your next post.

PS: Private message me when you are back with your post link.

If I'm helping you and I don't reply within 24 hours send me a PM.

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August 10, 2009 at 07:45:45
here is the rapidshare link:

here is the file I downloaded:


I tried to send a private message to you but I am not sure if I did it correctly.

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August 10, 2009 at 08:52:32
1) Attach a Combofix log, please review and follow these instructions carefully.

Download it here ->

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 ( 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 and paste the link here.

2) Please zip up C:\qoobox\quarantine and upload it, to a filehost such as Then, Private Message me the Download links to the uploaded files.

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August 10, 2009 at 13:59:12

thanks again for your help!

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August 10, 2009 at 15:58:19
Uninstall Combofix by: pause Antivirus/Sypware programs ( Programs to disable) > Start > run > type combofix /u > ok.

Do you have your windows installation CD?

PS: Please deleted download links from Response Number 10 as its not safe.

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August 10, 2009 at 16:37:02
I uninstalled combofix, and deleted the links.

I have the cd that I used to install windows office xp that what I need? I don't think I have any other windows CDs.

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August 10, 2009 at 17:15:14
Please download SystemLook from jpshortstuff and save it to your Desktop
Download Mirror #1
Download Mirror #2

* Double-click the SystemLook and copy/paste the following into the box


* Hit the Look button. Let it finish the scan
* A log will then pop-up to your Desktop.. Post the content of the log here in your next reply.

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August 10, 2009 at 18:10:54
SystemLook v1.0 by jpshortstuff (22.05.09)
Log created at 21:10 on 10/08/2009 by Todd Altstetter (Administrator - Elevation successful)

========== filefind ==========

Searching for "appmgmts.dll"
No files found.

-=End Of File=-

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August 10, 2009 at 18:26:50
1) Install, update database and run full scan with Malwarebytes' Anti-Malware. Attach malwarebyte full scan log, fix anything detected.

2) Run full Scan with SuperAntispyware : . Fix what it detects and post summary scan log.

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August 10, 2009 at 21:32:07
here is the malwarebytes log :

here is the spyware log:

thanks again.

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August 10, 2009 at 21:45:45
How is your computer running now?
Run a full scan with
# Check the box next to YES, I accept the Terms of Use.
# Click Start
# When asked, allow the activex control to be installed.
# Click Start
# Check below options:

    * Remove found threats
    * Scan archives
    * Scan for potentially unwanted applications (Advance Settings).
    * Enable Anti-Stealth technology (Advance Settings).

# Click Scan
# Wait for the scan to finish
# When it finishes it will create a log file here: C:\Program Files\ESET\ESET Online Scanner\log.txt
# Attach this logfile to your next message.

Illustrated tutorial:

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August 11, 2009 at 15:39:36
here is the log file:

the system is running good now. The search engine rerouting has stopped and I havent had any strange ads pop up or any other symptoms.

Thanks again!

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