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recuring infection

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i've tried everything to get rid of a virus/malware but to no success. ive tried malewarebytes, superanti spyware, and others (and was infected while i had mcafee antivirus plus running). i'll do a scan which will identify files to quarantine, but still get browser hijacks and malwarebytes blocks outgoing attempts to malicious sites. i'll run mwm again (and other removal tools) and it will not find any issues, but the hijacks and blocking continue. after a few days i'll run the malware scans and it will find bad files as though the virus is hiding somewhere that the scanners dont see, and then infecting other files. please help

dont know if this helps at all but every time i boot, the machine starts chkdsk and then immediately cancels it.

thanks in advance

mbam-log-2011-07-01 (14-44-47).txt



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Hello mschlee and welcome to Malwarebytes! :welcome:

I am D-FRED-BROWN and I will be helping you. :)

Please print or save this topic: it will make it easier for you to follow the instructions and complete all of the necessary steps.

***Note: In order for ComboFix to run properly McAfee must be uninstalled. Please go here and follow the instructions to uninstall McAfee.

You can reinstall it after the computer is clean.


Please download to your Desktop:

  • TDSSKiller.zip from here and extract it (right click on it => "Extract here").

>>> TDSSKiller: Double-click on TDSSKiller.exe to run the application.

  • Click on the Start Scan button and wait for the scan and disinfection process to be over.
  • If an infected file is detected, the default action will be Cure, click on Continue tdsskiller2.png
  • If a suspicious file is detected, the default action will be Skip, click on Continue tdsskiller3.png
  • If you are asked to reboot the computer to complete the process, click on the Reboot Now button. A report will be automatically saved at the root of the System drive ((usually C:\) in the form of "TDSSKiller.[Version]_[Date]_[Time]_log.txt" (for example, C:\TDSSKiller.2.2.0_20.12.2009_15.31.43_log.txt). Please copy and paste the contents of that file here.
  • If no reboot is required, click on Report. A log file will appear. Please copy and paste the contents of that file in your next reply.

In your next reply, please include the following (you may need to use two posts to get it all in):

  • TDSSKiller_log.txt
how the PC is running now?
Please download ComboFix.exe. Please visit this webpage for download links, and instructions for running the tool:
* Ensure you have disabled all anti virus and anti malware programs so they do not interfere with the running of ComboFix.
Please go here to see a list of programs that should be disabled.
**Note: Do not mouseclick ComboFix's window while it's running. That may cause it to stall**
Please include the C:\ComboFix.txt in your next reply for further review.
Also, please let me know if any problems still remain.
Please download Security Check by screen317 from here or here.
  • Save it to your Desktop.
  • Double click SecurityCheck.exe and follow the onscreen instructions inside of the black box.
  • A Notepad document should open automatically called checkup.txt; please post the contents of that document.


In your next reply, please include:

  • C:\ComboFix.txt
  • TDSSKiller log
  • Security Check checkup.txt

How is your computer running now?

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unistalled mcafee per instrucitnos (in windows uninstaller and running the cleaner program on mcafee site)


ran tdskiller and it found nothing

trying to run combofix but it says mcafee antivirus and realtime protection are running. but i looked at my running process and i dont see something that looks like mcafee (but i wouldnt unless it was obviously named), and searched through the uninstaller list in control panel and the program is not there.

should i just run combofix anyway?

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You have ComboFix running from a location other than the Desktop.

Please delete the following file (in bold):

c:\users\HP Laptop\Documents\Downloads\Programs\ComboFix_2.exe

Then, download and run a new copy of ComboFix to your Desktop. Please post the newly-created C:\ComboFix.txt in your next reply.

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We still have some more to do ;)

First, how are things running now? Any more symptoms?

Next, please do the following:

1. Close any open browsers.

2. Close/disable all anti virus and anti malware programs so they do not interfere with the running of ComboFix.

3. Open notepad and copy/paste the text in the quotebox below into it:







Save this as CFScript.txt, in the same location as ComboFix.exe


Refering to the picture above, drag CFScript into ComboFix.exe

When finished, it shall produce a log for you at C:\ComboFix.txt which I shall require in your next reply.

Note: Do not mouseclick combofix's window whilst it's running. That may cause it to stall.

Please include the newly-created C:\ComboFix.txt in your next reply, and let me know how things are running now ;)

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Before we do anything else, I need you to remove McAfee.

***Note: In order for ComboFix to run properly McAfee must be uninstalled. Please go here and follow the instructions to uninstall McAfee.

McAfee needs to remain uninstalled until I tell you its safest to reinstall it.


Before we move on, let's run some scans to see if there's any traces left:

Please run a free online scan with the ESET Online Scanner

Note: You will need to use Internet Explorer for this scan.

  1. Tick the box next to YES, I accept the Terms of Use.
  2. Click Start
  3. When asked, allow the ActiveX control to install
  4. Click Start
  5. Make sure that the options Remove found threats and the option Scan unwanted applications is checked
  6. Click Scan
    Wait for the scan to finish
  7. Use Notepad to open the logfile located at C:\Program Files\EsetOnlineScanner\log.txt
  8. Copy and paste that log as a reply to this topic


Please use the Internet Explorer and run a BitDefender Online scan from Here

  • Please check I agree with the Terms and Conditions and click Start Here
  • You will need to allow an Active X install for the scan to run.
  • Leave the scanning options at default and click Start Scan

Please post the results in your next reply.


Please include both the ESET and BitDefender reports in your next reply ;).

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combofix is still showing that mcafee is installed after following the instructions. i dont see the mcafee programs anywhere (including the uninstall programs list). i think the problem may be because i have an enterprise version of mcafee not a consumer version (my company has a license that allows us to put on our home computers used to access the company's intranet).

but again, i dont see the program anywhere so not sure what is going on. any ideas?

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Your logs appear to be clean! :)

Before we move on, please take the time to install the following updates, as using outdated applications leaves you vulnerable to getting infected again ;):

You are using Internet Explorer version 8. Since you are using Windows 7, you qualify for the latest version, which is 8. Using an outdated version of a web browser leaves you extremley vulnerable to malware!

Please see this link to download the latest version: http://windows.microsoft.com/en-US/internet-explorer/products/ie/home


I see you have User Accounts Control (UAC) disabled.

This is an important security feature which helps prevent malware and other unwanted software from being installed on your computer.

I strongly suggest you keep it enabled. See this link for instructions on how to enable it: http://windows.microsoft.com/en-US/windows-vista/Turn-User-Account-Control-on-or-off


Please let me know how the updates went, as failed updates may indicate additional malware ;)

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ok thanks. updated ie and enabled uac. what should i install to stop this from happening again? i have the malware service running, but since it could not find this virus, not sure it would have stopped it. any other programs i should have?

mcafee seems useless as it did not stop this infection or detect it after the fact.

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Glad to hear the updates went well :)

what should i install to stop this from happening again? i have the malware service running, but since it could not find this virus, not sure it would have stopped it. any other programs i should have?

mcafee seems useless as it did not stop this infection or detect it after the fact.

Personally, I use Avast! Free edition and Malwarebytes PRO as my security software ;) You could try this combination out and see how you like it :)

I will now provide you with some suggestions for security software, but first, ComboFix must be uninstalled ;):

The following will implement some cleanup procedures as well as reset System Restore points:

Click Start > Run and copy/paste the following bolded text into the Run box and click OK:

ComboFix /Uninstall

**You may now reinstall McAfee AntiVirus if you haven't already.


Please consider using these ideas to help secure your computer. While there is no way to guarantee safety when you use a computer, these steps will make it much less likely that you will need to endure another infection. While we really like to help people, we would rather help you protect yourself so that you won't need that help in the future. :)

Please either enable Automatic Updates under Start -> Control Panel -> Automatic Updates or get into the habit of checking Windows Update regularly. They usually have security updates every month. You can set Windows to notify you of Updates so that you can choose, but only do this if you believe you are able to understand which ones are needed. This is a crucial security measure.

It is really dangerous to go online without an antivirus. Without one, you are extremely likely to get infected and the consequences could be even worse next time. All of the following are excellent free antiviruses. Be sure to only install one.




Please consider installing and running some of the following programs; they are either free or have free versions of commercial programs:

Spybot-Search & Destroy

A tutorial on using Spybot to remove spyware from your computer may be found here. Please also remember to enable Spybot's "Immunize" and "TeaTimer" features if you don't have the resident part of another anti-spyware program running.


A tutorial on using SpywareBlaster to prevent malware from ever installing on your computer may be found here.


A tutorial on using SpywareGuard for real-time protection against spyware and hijackers may be found here.

Please, consider maintaining a firewall with HIPS (Host Intrusion Prevention Systems). Firewalls are extremely important and are the first part of your computer's defense. HIPS stops malware by monitoring its behavior and it's very important, too.

A firewall is a software program or piece of hardware that helps screen out hackers, viruses, and worms that try to reach your computer over the Internet.

If you are using the Windows Firewall please note that it doesn't monitor or block outbound traffic and is therefore less effective than other free alternatives.

These firewalls are good and do have free versions available

A tutorial on understanding and using firewalls may be found here.

If you use Internet Explorer, it is a good idea to use IE-Spyad for ZonedOut which provides protections against malicious websites. (Requires 2 downloads)

Please keep these programs up-to-date and run them whenever you suspect a problem to prevent malware problems. A number of programs have resident protection and it is a good idea to run the resident protection of one of each type of program to maintain protection. However, it is important to run only one resident program of each type since they can conflict and become less effective. That means only one antivirus, firewall and scanning anti-spyware program at a time. Passive protectors, like SpywareBlaster and IE-Spyad can be run with any of them.

Note that there are a lot of rogue programs out there that want to scare you into giving them your money and some malware actually claims to be security programs. If you get a popup for a security program that you did not install yourself, do NOT click on it and ask for help immediately. It is very important to run an antivirus and firewall, but you can't always rely on reviews and ads for information. Ask in a security forum that you trust if you are not sure. If you are unsure and looking for anti-spyware programs, you can find out if it is a rogue here:


A similar category of programs is now called "scareware." Scareware programs are active infections that will pop-up on your computer and tell you that you are infected. If you look closely, it will usually have a name that looks like it might be legitimate, but it is NOT one of the programs you installed. It tells you to click and install it right away. If you click on any part of it, including the 'X' to close it, you may actually help it infect your computer further. Keeping protection updated and running resident protection can help prevent these infections. If it happens anyway, get offline as quickly as you can. Pull the internet connection cable or shut down the computer if you have to. Contact someone to help by using another computer if possible. These programs are also sometimes called 'rogues', but they are different than the older version of rogues mentioned above.

Please consider using an alternate browser. Mozilla's Firefox browser is a very good alternative. In addition to being generally more secure than Internet Explorer, it has a very good built-in popup blocker and add-ons, like NoScripts, can make it even more secure. Opera is another good option.

If you are interested, Firefox may be downloaded from here

Opera is available here: http://www.opera.com/download/

For much more useful information, please also read Tony Klein's excellent article: How did I get infected in the first place

Hopefully these steps will help to keep you error free. If you run into more difficulty, we will certainly do what we can to help. :)

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