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Windows 10 kernel files infected

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I found this morning that Emsisoft Internet Security had not updated for about two days.  I looked at the update logs and found that it had been unable to connect to the internet, although other programs had been able to connect O.K.  I sent a detailed message to Emsisoft via their website asking for help regarding this.


A few hours later my computer showed a pop-up message from Emsisoft Internet Security program warning me that a file (WinSAT.exe) was exhibiting suspicious behaviour (I've forgotten what type) and recommending that I quarantine the file.  I did this and immediately the following message popped up:

"The following Windows kernel files have been detected as infected:

C:\Windows\System 32\WinSAT.exe

As these files are essential for Windows to work, you can't delete or quarantine them now."


The message went on to suggest that I ask for help to remove this infection from the Emsisoft removal experts on this forum.


I don't know whether there is any connection between the program being unable to update and the later message about an infected file.


Your help would be very much appreciated.  The requested files are attached.scan_151014-172433.txtFRST.txtAddition.txt

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Do the following:

Copy the below code to Notepad; Save As fixlist.txt to your Desktop.

2015-10-11 16:19 - 2015-10-11 16:19 - 00003196 _____ C:\Windows\System32\Tasks\{BDBEAC6E-A998-4F4B-A5EC-1C11C30D0D1F}
2015-10-11 15:24 - 2015-10-11 15:24 - 00003196 _____ C:\Windows\System32\Tasks\{C903D678-9FF7-4654-B460-03B0F9FF64D2}
2015-10-07 04:11 - 2015-10-07 04:11 - 00003834 _____ C:\Windows\System32\Tasks\IUM-F1E24CA0-B63E-4F13-A9E3-4ADE3BFF3473
2015-09-15 11:59 - 2015-09-15 11:59 - 00000000 ____D C:\ProgramData\{C6FA530F-BB98-4D9F-BA00-45FD0698077C}
Close Notepad.

NOTE: It's important that both files, FRST64 and fixlist.txt are in the same location or the fix will not work.

NOTICE: This script was written specifically for this user, for use on that particular machine. Running this on another machine may cause damage to your operating system

Run FRST64 and press the Fix button just once and wait.

If the tool needed a restart please make sure you let the system to restart normally and let the tool complete its run after restart.

The tool will make a log on the Desktop (Fixlog.txt). Attach it to your reply.

Note: If the tool warns you about an outdated version please download and run the updated version.

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After doing as you advised in your post above and considering that Fixlog.txt only reported successful actions, I was hoping that your next post would advise me that the problem had been solved but unfortunately EIS has just repeated exactly the same message as I quoted in my first post.  So it would appear that the problem has not been solved yet.  Perhaps you didn't expect it to be.


I really appreciate your assistance but I am concerned that at a rate of one message per day between us and none at weekends it could take a very long time to solve my problem.  I have a number of questions that I hope you will answer for me to help me to assess my situation and decide what is my best course of action from here:

  1. Do you agree with my assessment that it could take quite a number more messages between us to solve the problem (and therefore quite a number of days) or are we on the cusp of success?
  2. The infected computer is normally networked with another home computer on which all our data is stored and accessed by both computers.  Since I found out about the infection the computers have not been networked except for printing your instructions but I have continued to use the infected computer for the tasks I can do without the network connection.  Do I need to continue to keep the infected computer off the network or should I perhaps not be using it at all except to carry out your instructions?
  3. Is it likely that the other home computer is already infected?  It is running AVG Antivirus Free which has not reported an infection.  Neither computer is showing any signs of infection.
  4. Would the quickest course of action for me be to restore the computer to an earlier restore point?  If I did this I would not know which would be the latest restore point that predated the infection.  I would also not know whether I had been successful in removing the infection.
  5. I bought this computer NEW on 6th October 2015.  The last line of code you sent me for inclusion in fixlist.txt includes a reference to a file dated 15th September 2015.  Does this mean that the computer may have been infected from brand new?
  6. Should I reset the computer to reinstall Windows?

  I hope I haven't wasted your valuable time with a lot of silly questions.

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It is entirely possible that we could be working on this for several days.

Normally, you what to isolate the infected computer from the network, to avoid infecting other networked computers.

If the other computers appear to be OK, then they are probably fine.

The quickest method method to restore an infected computer is to restore it to factory. That is not always feasible or practical.

The one item is probably something from when the computer was built. Probably belongs to some sort of toolbar.

Let's run a couple of tools that specifically target Adware and Junkware.

Download AdwCleaner and save it on your desktop.

  • Close all open programs and Internet browsers (you may want to print our or write down these instructions first).
  • Double click on adwcleaner.exe to run the tool.
  • Click on the Scan button.
  • After the scan has finished, click on the Clean button.
  • Confirm each time with OK.
  • You will be prompted to restart your computer. A text file will open in Notepad after the restart (this is the log of what was removed), which you can save on your desktop.
  • Attach that log file to your reply by clicking the More Reply Options button to the lower-right of where you type in your reply.

    NOTE: If you lose that log file for any reason, you can find it at C:\AdwCleaner on your computer.

Download Junkware Removal Tool and save it on your desktop.
  • Run the tool by double-clicking it.
  • The tool will open and start scanning your system.
  • Please be patient as this can take a while to complete depending on your system's specifications.
  • On completion, a log is saved to your desktop and will automatically open.
  • Attach the JRT log file to a reply by clicking the More Reply Options button to the lower-right of where you type in your reply.
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In view of the two more infected files I mentioned in my post above, would my best course of action now be to restore to factory settings or would this only reinstall the infection if, as you said " The one item is probably something from when the computer was built"?


Although reinstalling programs and resetting settings after restoring to factory settings would take me quite a few hours, it may be a certain solution (I'd like your advice on that) and get my computer up and running sooner than we would otherwise.


Thanks again for your assistance.

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There are various tools that set those Registry Keys, not all of them are legitimate.

Those two registry keys are used to enable and disable the Task Manager and the Registry Editor. By default neither is present on a Windows system. If they keep coming back then an application on the system is setting them.

AdwCleaner dis remove a couple of Adware related items from teh system.

Let's take a fresh look.

Run fresh scans with Emsisoft Emergency Kit (EEK) and FRST, attach the new EEK and FRST scans to your reply.

Be sure to let me know how things are running?

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Thread Closed

Reason: Lack of Response

PM either Kevin, Elise, or Arthur to have this thread reopened.

The procedures contained in this thread are for this user and this user only. Attempting to use the instructions in this thread on your system could result in damaging the Operating System beyond repair. Do not use any of the tools mentioned in this thread without the supervision of a Malware Removal Specialist.

All posters requesting Malware Removal assistance are required to follow all procedures in the thread titled START HERE, if you don't we are just going to send you back to this thread.

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