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Used combofix to get rid of a virus and now nothing works


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#1 chandman

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Posted 09 August 2009 - 04:08 PM

Hi and greetings to everyone as this is my first post.

I have a computer running win32 Vista and today I had a trojan "packed.win32.tdss.m" in my computer. I have a ZoneAlarm security suite which was not updated for about a week or so. My antivirus was finding this trojan but couldn't delete it, my only option was to "delete on startup" except evrytime I started up the computer, ZoneAlarm would give me an error and do absolutely nothing, and it would subsequently find the virus again in its scan!

So I googled for people with the same problem, I came across a post where a moderator had suggested the use of "combofix.exe" to someone with a similar problem. I renamed the Combofix file ran it and it went through its scan and now apparently it has marked a lot of registries for deletion (i'm not sure) and now nothing works. Every time I try to run a file it says "illegal operation attempted on a registry key that has been marked for deletion"

I'm not very computer savvy but I searched for the "combofix" tutorial and it forwarded this forum as a place where I can get suggestions on what to do with the log file that is created. I have not touched the computer since its original combofix restart, and right now I'm using my friend's computer to write this email.

I'd appreciate any help that you can give me.

Thank you,

C.

Edited by chandman, 09 August 2009 - 04:18 PM.


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#2 D_N_M

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Posted 09 August 2009 - 04:14 PM

Hello chandman

You should not be using Combofix unless instructed to do so by a Malware Removal Expert who can interpret the logs. It is a powerful tool intended by its creator to be "used under the guidance and supervision of an expert", NOT for private use. Combofix was never meant to be used as a general purpose malware scanner like SuperAntispyware or Malwarebytes' Anti-Malware. Using this tool incorrectly could lead to disastrous problems with your operating system such as preventing it from ever starting again. Please read Combofix's Disclaimer. That's the decision by the creator and we will abide by that decision.

Please be patient until a BC advisor or member of the HJT team to further assist you
Regards

D_N_M

#3 chandman

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Posted 09 August 2009 - 05:07 PM

Thanks D_N_M, I'll wait meanwhile if there's any other information that you need please do not hesitate to ask.

C.

#4 boopme

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Posted 09 August 2009 - 05:37 PM

Hello, well too late to tell you about the blue text at the top of this page..
You will need to run HJT/DDS.
Please follow this guide. Preparation Guide For Use Before Using Hijackthis. Then go here HijackThis Logs and Virus/Trojan/Spyware/Malware Removal ,click New Topic,give it a relevant Title and post that complete log. Mention that you ran Combofix and put a link to this topic in that one.

Let me know if it went OK.
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#5 chandman

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Posted 09 August 2009 - 06:31 PM

DDS does not open either, I have done what you asked me to no avail. I can only browse through folders and copy paste as we speak. None of the applications run.

#6 boopme

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Posted 09 August 2009 - 07:30 PM

If you cannot get DDS to work, please try this instead.

Please download RSIT by random/random and save it to your Desktop.
Note: You will need to run this tool while connected to the Internet so it can download HijackThis if it is not located on your system. If you get a warning from your firewall or other security programs regarding Rist attempting to contact the Internet, please allow the connection.
  • Close all applications and windows so that you have nothing open and are at your Desktop.
  • Double-click on RSIT.exe to start the program.
  • If using Windows Vista, be sure to Run As Administrator.
  • Click Continue after reading the disclaimer screen.
  • Leave the drop down box set to default: "List/folders created or modified in the last 1 month (30 days).
  • When the scan is complete, a text file named log.txt will automatically open in Notepad.
  • Save the log file to your desktop and copy/paste the contents into a new topic in the HijackThis Logs and Malware Removal forum, NOT here.
Important: Be sure to mention that you tried to follow the Prep Guide but were unable to get DDS to run.
If RSIT did not work, then reply back here.
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#7 chandman

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Posted 09 August 2009 - 07:52 PM

There seems to be a little misunderstanding here. I "can't" run any applications exe files whatsoever, there seems to be a procedure that is marked to be deleted that is missing or is misplaced and that is stopping all these other apps from running.

At the moment, the only thing I have is the combofix log file. Is there anyway to figure out what registry entries are missing from that, and if so is there anyway to put them in the right order!?

Thanks

#8 boopme

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Posted 09 August 2009 - 09:57 PM

Try to run sfc /scannow

You will need your XP CD handy.

Open Windows Task Manager....by pressing CTRL+SHIFT+ESC

Then click File.. then New Task(Run)

In the box that opens type sfc /scannow ......There is a space between c and /

Click OK
Let it run and insert the XP CD when asked.
How do I get help? Who is helping me?For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear....Become a BleepingComputer fan: Facebook

#9 chandman

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Posted 10 August 2009 - 02:31 AM

Thank you so much boopme,

the problem looks like it's solved, I will run a virus scan in the morning to make sure there aren't any other viruses left.

#10 boopme

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Posted 10 August 2009 - 10:26 AM

Ok, yes run that and this.. let me know as we now have 2 topics open. This and HJT and that's a board no no..Thanks.
Next run MBAM (MalwareBytes):

NOTE: Before saving MBAM please rename it to zztoy.exe....now save it to your desktop.

Please download Malwarebytes Anti-Malware and save it to your desktop.

alternate download link 2

MBAM may "make changes to your registry" as part of its disinfection routine. If using other security programs that detect registry changes (ie Spybot's Teatimer), they may interfere or alert you. Temporarily disable such programs or permit them to allow the changes.
  • Make sure you are connected to the Internet.
  • Double-click on mbam-setup.exe to install the application.
  • When the installation begins, follow the prompts and do not make any changes to default settings.
  • When installation has finished, make sure you leave both of these checked:
    • Update Malwarebytes' Anti-Malware
    • Launch Malwarebytes' Anti-Malware
  • Then click Finish.
MBAM will automatically start and you will be asked to update the program before performing a scan.
  • If an update is found, the program will automatically update itself. Press the OK button to close that box and continue.
  • If you encounter any problems while downloading the definition updates, manually download them from here and just double-click on mbam-rules.exe to install.
On the Scanner tab:
  • Make sure the "Perform Quick Scan" option is selected.
  • Then click on the Scan button.
  • If asked to select the drives to scan, leave all the drives selected and click on the Start Scan button.
  • The scan will begin and "Scan in progress" will show at the top. It may take some time to complete so please be patient.
  • When the scan is finished, a message box will say "The scan completed successfully. Click 'Show Results' to display all objects found".
  • Click OK to close the message box and continue with the removal process.
Back at the main Scanner screen:
  • Click on the Show Results button to see a list of any malware that was found.
  • Make sure that everything is checked, and click Remove Selected.
  • When removal is completed, a log report will open in Notepad.
  • The log is automatically saved and can be viewed by clicking the Logs tab in MBAM.
  • Copy and paste the contents of that report in your next reply. Be sure to post the complete log to include the top portion which shows MBAM's database version and your operating system.
  • Exit MBAM when done.
Note: If MBAM encounters a file that is difficult to remove, you will be asked to reboot your computer so MBAM can proceed with the disinfection process. If asked to restart the computer, please do so immediately. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware.
How do I get help? Who is helping me?For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear....Become a BleepingComputer fan: Facebook

#11 chandman

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Posted 10 August 2009 - 12:59 PM

Thanks boopme,

But I think the problem is already solved. I updated my zone alarm antivirus and did another scan, and it doesn't find anything anymore. I think the virus problem is already solved as Combofix had already deleted the suspect dll files. And you were kind of to show me away to get them back. So I think the issue is resolved :thumbsup:

#12 boopme

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Posted 10 August 2009 - 02:25 PM

Ok, I just like to be sure and a quick scan usually needs minutes..
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#13 chandman

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Posted 13 August 2009 - 04:53 AM

Hi boopme,

sorry for the long delay in my response, I had to hand in an assignment for school...anyway I did as you asked and this is the malwarebytes log. I've also noticed sometimes when I click on google results it takes me to an ad instead...don't know if this has anything to do with viruses and stuff. Anyway, here is the log from malwarebytes:

Thanks again,

C.

Malwarebytes' Anti-Malware 1.40
Database version: 2615
Windows 6.0.6001 Service Pack 1

8/13/2009 5:48:16 AM
mbam-log-2009-08-13 (05-48-16).txt

Scan type: Full Scan (C:\|)
Objects scanned: 427911
Time elapsed: 2 hour(s), 50 minute(s), 0 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 0
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 2

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
(No malicious items detected)

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
C:\Program Files\Adobe\Acrobat 8.0\Setup Files\{AC76BA86-1033-F400-7760-000000000003}\Keygen8.exe (Backdoor.Bot) -> Quarantined and deleted successfully.
C:\Users\Shervin\AppData\Local\Temp\0UfVj7wJ.exe.part (Adware.BHO) -> Quarantined and deleted successfully.

#14 boopme

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Posted 13 August 2009 - 03:39 PM

Ok this looks good now. If there are no more inducations of malware then...

Now you should Create a New Restore Point to prevent possible reinfection from an old one. Some of the malware you picked up could have been backed up, renamed and saved in System Restore. Since this is a protected directory your tools cannot access to delete these files, they sometimes can reinfect your system if you accidentally use an old restore point. Setting a new restore point AFTER cleaning your system will help prevent this and enable your computer to "roll-back" to a clean working state.

The easiest and safest way to do this is:
  • Go to Start > Programs > Accessories > System Tools and click "System Restore".
  • Choose the radio button marked "Create a Restore Point" on the first screen then click "Next". Give the R.P. a name, then click "Create". The new point will be stamped with the current date and time. Keep a log of this so you can find it easily should you need to use System Restore.
  • Then use Disk Cleanup to remove all but the most recently created Restore Point.
  • Go to Start > Run and type: Cleanmgr
  • Click "Ok". Disk Cleanup will scan your files for several minutes, then open.
  • Click the "More Options" tab, then click the "Clean up" button under System Restore.
  • Click Ok. You will be prompted with "Are you sure you want to delete all but the most recent restore point?"
  • Click Yes, then click Ok.
  • Click Yes again when prompted with "Are you sure you want to perform these actions?"
  • Disk Cleanup will remove the files and close automatically.
Vista Users can refer to these links: Create a New Restore Point and Disk Cleanup.
How do I get help? Who is helping me?For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear....Become a BleepingComputer fan: Facebook




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