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I think i have some weird Virus.


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Hello, i think i have a virus on my PC. So about my problem, when i wasn't doing anything on my PC (was on my phone or sth) I noticed that my fans are pretty loud for an idle PC, so i wanted to check it what's going on by oppening Task Manager, but then it went quiet so i thought it was something temporary and normal. But then it happend again so i checked my CPU usage in diffrent app. I noticed that 3 Threads are used in 100%, but whenever i open Task Manager its going down to 0-5%. I scanned my PC with Malwarebytes, and Adwcleaner and they can't find anything, but it for me it looks like some kind of Bitcoin Trojan or something. I failed to find on my own what makes it happend. Also this "virus" does not activate immediately after closing Task Manager but it takes some time. Please help me resove this problem.

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1 hour ago, David103 said:

Hello, i think i have a virus on my PC. So about my problem, when i wasn't doing anything on my PC (was on my phone or sth) I noticed that my fans are pretty loud for an idle PC, so i wanted to check it what's going on by oppening Task Manager, but then it went quiet so i thought it was something temporary and normal. But then it happend again so i checked my CPU usage in diffrent app. I noticed that 3 Threads are used in 100%, but whenever i open Task Manager its going down to 0-5%. I scanned my PC with Malwarebytes, and Adwcleaner and they can't find anything, but it for me it looks like some kind of Bitcoin Trojan or something. I failed to find on my own what makes it happend. Also this "virus" does not activate immediately after closing Task Manager but it takes some time. Please help me resove this problem.

Przechwytywanie.PNG

 

Addition.txt FRST.txt

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Hello @David103

I don't see an obvious infection in the logs. Let's do a generic clean up of the computer and then if needed we can do some additional antivirus scans.

 

Please download the attached fixlist.txt file and save it to the Desktop or location where you ran FRST from.
NOTE. It's important that both files, FRST or FRST64, and fixlist.txt are in the same location or the fix will not work.

Please make sure you disable any real time antivirus or security software before running this script. Once completed make sure you re-enable it.

NOTICE: This script was written specifically for this user, for use on this particular machine. Running this on another machine may cause damage to your operating system that cannot be undone.

Run FRST or FRST64 and press the Fix button just once and wait.
If the tool needs a restart please make sure you let the system restart normally and let the tool complete its run after restart.
The tool will make a log on the Desktop (Fixlog.txt) or wherever you ran FRST from. Please attach or post it to your next reply.

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

NOTE-1:  This fix will run a scan to check that all Microsoft operating system files are valid and not corrupt and attempt to correct any invalid files. It will also run a disk check on the restart to ensure disk integrity. Depending on the speed of your computer this fix may take 30 minutes or more.

NOTE-2: As part of this fix all temporary files will be removed. If you have any open web pages that have not been bookmarked please make sure you bookmark them now as all open applications will be automatically closed. Also, make sure you know the passwords for all websites as cookies will also be removed. The use of an external password manager is highly recommended instead of using your browser to store passwords.

The following directories are emptied:

  • Windows Temp
  • Users Temp folders
  • Edge, IE, FF, Chrome and Opera caches, HTML5 storages, Cookies and History
  • Recently opened files cache
  • Flash Player cache
  • Java cache
  • Steam HTML cache
  • Explorer thumbnail and icon cache
  • BITS transfer queue (qmgr*.dat files)
  • Recycle Bin

Important: items are permanently deleted. They are not moved to quarantine. If you have any questions or concerns please ask before running this fix.

The system will be rebooted after the fix has run.

fixlist.txt

Thanks

 

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The issue with the Task Manager is not an issue and is very much normal on Windows 10. You can see this discussed in more detail in the following topic.

CPU Usage always at 70%+ until task manager is open
https://forums.malwarebytes.com/topic/252362-cpu-usage-always-at-70-until-task-manager-is-open/

As for one being used more or hotter there are various reasons for that. I don't believe you'll be able to do anything about that as different programs and processes can be threaded and use one or more cores without using all of them.

The computer does not show an infection, the current log you posted shows the system to be in reasonably good shape. Unless you have something more to show I don't think you're having a real issue.
If the core always remained at 100% regardless of what it was doing that could be an issue but aside from replacing the CPU I doubt there would be any way to stop it.

 

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But it wasn't always like that, only since couple od days, and i didn't install or uninstall anything. It stays on 100% no matter you do, only when you open any program that can track processes it goes to 0-5% and it's really annoying that my fans are always so loud unless i open Task Manager. I don't think leaving it open in the background is the right solution

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You can run some other antivirus scans, but the description of your issue certainly seems normal. The only not normal is 100% core usage.

STEP 1

Please download and run the following Kaspersky antivirus scanner to remove any found threats

Kaspersky Virus Removal Tool

Let me know if it finds anything or not

 

STEP 2

Let me have you run a different scanner to double-check. I don't expect it to find anything, but no harm in checking.

I would suggest a free scan with the ESET Online Scanner

Go to https://download.eset.com/com/eset/tools/online_scanner/latest/esetonlinescanner.exe

  • It will start a download of "esetonlinescanner.exe"
  • Save the file to your system, such as the Downloads folder, or else to the Desktop.
  • Go to the saved file, and double click it to get it started. 
  • When presented with the initial ESET options, click on "Computer Scan".
  • Next, when prompted by Windows, allow it to start by clicking Yes 
  • When prompted for scan type, Click on Full scan 
  • Look at & tick  ( select )   the radio selection "Enable ESET to detect and quarantine potentially unwanted applications"   and click on Start scan button.
  • Have patience.  The entire process may take an hour or more. There is an initial update download.
  • There is a progress window display.
  • You should ignore all prompts to get the ESET antivirus software program.   ( e.g.  their standard program).   You do not need to buy or get or install anything else.
  • When the scan is completed, if something was found, it will show a screen with the number of detected items.  If so, click the button marked “View detected results”.
  • Click The blue “Save scan log” to save the log.
  • If something was removed and you know it is a false finding, you may click on the blue ”Restore cleaned files”  ( in blue, at bottom).
  • Press Continue when all done.  You should click to off the offer for “periodic scanning”.

 

STEP 3

The Microsoft Safety Scanner  is a free Microsoft stand-alone virus scanner that  can be used to scan for & remove malware or potentially unwanted software from a system.

The download links & the how-to-run-the tool are at this link at Microsoft

https://docs.microsoft.com/en-us/windows/security/threat-protection/intelligence/safety-scanner-download

Please let me know the results of this scan.

The log is named MSERT.log 

the log will be at  %SYSTEMROOT%\debug\msert.log   which in most cases is

C:\Windows\debug\msert.log

Please attach that log with your next reply.

 

 

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Thank you. @David103

Not sure where you got it as it appears to be a very old infection that Microsoft has detected since 2014 and ESET since at least 2018

In theory since you're on Windows 10 it should have caught and prevented it from getting on the box in the first place. My guess is that possibly some other exploit was able to get past Windows Defender's exploit protection and without any other security on the box there was nothing to stop it. Due to its old age we don't keep rules for something that old as they're rarely seen in the wild.

The good part is it was only a miner and not a Ransomware that encrypts your data.  Make sure you have a good backup routine for your data to an external source.

You may want to consider augmenting Windows Defender to help prevent something like this from getting on the computer in the first place.

 

Is there anything else I can assist you with before we close up here?

 

 

 

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Yes, between Malwarebytes and Windows Defender they work very well together. Just make sure in Settings, you allow Windows Defender to run by not registering Malwarebytes in the Security Center.

image.png

Thank you again. Stay safe out there. I'll close you topic now.

Cheers

 

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Glad we could help.

If you need this topic reopened, please send a Private Message to any one of the moderating team members. Please include a link to this topic with your request.

This applies only to the originator of this thread. Other members who need assistance please start your own topic in a new thread.

Please review the following for Tips to help protect from infection

Thank you

 

 

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Hello @David103

Arg... Okay, I found it. I think my mistake was I probably stepped away while looking at your original log and when I came back I overlooked the entry in the log.

This appears to be the file that caused the infection.

Task: {DBBE2D9E-8B9B-4B4E-AE40-8048CE2EDB57} - System32\Tasks\SoundBass => C:\Users\dawid\AppData\Roaming\Unpacker\Unpacker.exe [290338816 2020-08-11] (Unpacker) [Brak podpisu cyfrowego]

I'm not certain that ESET removed that.

Please run FRST again and post back fresh new logs so we can make sure it was removed.

 

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