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Found this after a Defender/ MBytes alert: Trojan:Win64/SilentCryptoMiner


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Yesterday, the 10th of January, Windows Defender alerted me to an infected file. The location was:

file: C:\Users\Tijn\AppData\Roaming\Microsoft\MMC\7zip\Ultra64.exe

I tried removing the file, but after restarting the alert was back. I tried removing the folder, but here the folder also came back after a restart. I ran MalwareBytes and got the following (see attached image) found threats. After choosing to quarantine the found threats, the threats re-appear after scanning again and resetting my machine again.

 

It seems the threats are identified, but I can't seem to get rid of them forever with eiter deleting or quarantining them.

malwarebytes scan 11-01-24.JPG

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Hello  @Kantoken  and  :welcome:

My name is MKDB and I will assist you.

 

 

Let's keep these principles as we proceed. Make sure to read the entire post below first.

  • Please follow the steps in the given order and post back the log files.
  • Please attach all log files into your post.
  • Before we start, please make sure that you have an external backup, not connected to this system, of all private data.
  • Only run the tools I guide you to. Please don't run any other scans, download, install or uninstall any programs while I'm working with you.
  • As English is not my native language, please do not use slang or idioms. It may be hard for me to understand.
  • If you do not respond within 4 days, your topic will be closed.
  • Cracked or hacked or pirated programs are not only illegal, but also will make a computer a malware victim. Having such programs installed, is the easiest way to get infected. It is the leading cause of ransomware encryptions. It is at times also a big source of current trojan infections. If you are running any kin of illegal software on your system, please uninstall them now, before we start the cleaning procedure.

 

 

 

  • Please download the Malwarebytes Support Tool (MBST).
  • Run MBST and accept license agreement.
  • In the left navigation pane of MBST, click Advanced.
  • In the Advanced Options, click Gather Logs. A status diagram displays the tool is Getting logs from your machine.
  • A zip file named mbst-grab-results.zip will be saved to your desktop, please upload that file on your next reply.
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@Kantoken

Due to some manipulated services, the malware gets restored once it is deleted.

We will remove the malware and restore those damaged services.

 

 

We will use Farbar Recovery Scan Tool (FRST) to run a fix. FRST was downloaded together with MBST and should be located in your download folder: C:\Users\Tijn\Downloads\FRSTEnglish.exe

The fix may take some time, please be very patient and do not interfere.

Due to the complexity of this malware, more steps will follow to check the results and do some more repair. I would like you to stay with me until everything is finished.

 

 

  • Please download the attached fixlist.txt file and save it to your download folder, which is C:\Users\Tijn\Downloads\ in your case.
  • You will find the file FRSTEnglish.exe (FRST) as well in this folder.

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

  • Close all open programs and save your work.
  • Run FRST.
  • Press the Fix button only once and wait. Please be patient and do not interfere, even if FRST does not respond for some time. That's nothing to worry about.
  • Please note: This Fix will remove all temporary files, empty recycle bin and will remove cookies and may result in some websites indicating they do not recognize your computer. It may be necessary to receive and apply a verification code.
  • Please note: This step resets your Firewall settings and you may be asked later to grant permission for legitimate programs to pass through the Firewall. If you recognize the program, agree to the request.
  • If the tool needs a restart, please make sure you let the system restart normally and let the tool complete its run after restart.
  • FRST will create one log now (Fixlog.txt) in the same directory the tool is run.
  • Please attach this logfile to your next reply.

 

 

fixlist.txt

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@Kantoken

Well done.

 

In order to check the results, I would like you to run FRST and FSS.

Thank you!

 

 

1️⃣

  • Run FRST again.
  • Do not change any settings.
  • Press the Scan button.
  • FRST will create two logs now (FRST.txt + Addition.txt) in the same directory the tool is run.
  • Please attach these logfiles to your next reply.

 

 

2️⃣

Please download Farbar Service Scanner (FSS) and and save it to your download folder.

  • Make sure the following options are checked:
  • Internet Services
  • Windows Firewall
  • System Restore
  • Security Center/Action Center
  • Windows Update
  • Windows Defender
  • Other Services
  • Press the Scan button.
  • It will create a log (FSS.txt) in the same directory the tool is run.
  • Please attach this logfile to your next reply.

 

 

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@Kantoken

All three logfiles look much better now.

 

I suggest to run some tools for a second opinion.

Thank you.

 

 

1️⃣

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 the 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 the bottom).
  • Press Continue when all done.  You should click to off the offer for “periodic scanning”.

Note: If you do need to do a File Restore from ESET please follow the directions below

[KB2915] Restore files quarantined by the ESET Online Scanner version 3

https://support.eset.com/en/kb2915-restore-files-quarantined-by-the-eset-online-scanner

 

 

2️⃣

I would like you to run a tool named SecurityCheck to inquire about the current security update status of some applications.

  • Download SecurityCheck by glax24: https://tools.safezone.cc/glax24/SecurityCheck/SecurityCheck.exe
  • If Microsoft SmartScreen blocks the download, click through to save the file
  • This tool is safe.   Smartscreen is overly sensitive.
  • If SmartScreen blocks the file from running click on More info and Run anyway
  • Right-click  with your mouse on the Securitycheck.exe  and select "Run as administrator"  and reply YES to allow to run & go forward
  • Wait for the scan to finish. It will open a text file named SecurityCheck.txt Close the file.  Attach it with your next reply.
  • You can find this file in a folder called SecurityCheck, C:\SecurityCheck\SecurityCheck.txt
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@Kantoken

ESET did only detect some unwanted elements, no new active malware. That are good news.

 

One of the detected elements may be a hacktool/crack. Please note that such software does often bundle malware as said in my first post.

I suggest to stop using such crap.

 

 

You should update some programs (if your still need them) or uninstall them (if you don't need them anymore or not supported anylonger):

Microsoft Visual C++ 2015-2022 Redistributable (x86) - 14.36.32532 v.14.36.32532.0 Warning! Download Update
Microsoft Visual C++ 2015-2022 Redistributable (x64) - 14.36.32532 v.14.36.32532.0 Warning! Download Update
Microsoft SQL Server 2005 Compact Edition [ENU] v.3.1.0000 Warning! This software is no longer supported.
Windows Live Essentials v.16.4.3528.0331 Warning! This software is no longer supported.

 

 

Thank you for your cooperation. You can use KpRm to remove FRST and other tools.

 

Please download KpRm by kernel-panik and save it to your desktop.

  • Right-click kprm_(version).exe and select Run as Administrator.
  • Read and accept the disclaimer.
  • When the tool opens, select Delete Tools under Actions.
  • Under Delete Quarantines select Delete Now, then click Run.
  • Once complete, click OK.
  • A log may open in Notepad titled kprm-(date).txt.  I do not need it. Just close Notepad if it shows up.

 

A few final recommendations can be found here:

https://forums.malwarebytes.com/topic/258363-tips-to-help-protect-from-infection/

 

Further reading if you like to keep up on the malware threat scene:

Malwarebytes Blog  https://blog.malwarebytes.com/

 

Hopefully, we've been able to assist you with correcting your system issues.

Thank you for using Malwarebytes.

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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.

 

As this topic seems to be solved, I do not follow it any longer.

Take care!

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  • Root Admin

We're glad that we were able to assist you.

The following information will help you to keep your computer and data safer as well as improve your overall privacy

  1. Recommend using a Password Manager for all websites, etc. that require a password. Never use the same password on more than one site.
    https://www.howtogeek.com/780233/best-password-manager/
  2. Make sure you're backing up your files https://forums.malwarebytes.com/topic/136226-backup-software/
  3. Keep all software up to date - PatchMyPC - https://patchmypc.com/home-updater#download     https://patchmypc.com/about-us
  4. Keep your Operating System up to date and current at all times - https://support.microsoft.com/en-us/windows/windows-update-faq-8a903416-6f45-0718-f5c7-375e92dddeb2
  5. Further tips to help protect your computer data and improve your privacy: https://forums.malwarebytes.com/topic/258363-tips-to-help-protect-from-infection/ 
  6. Please consider installing the following Content Blockers for your Web browsers if you haven't done so already. This will help improve overall security

Malwarebytes Browser Guard

uBlock Origin

 

Further reading if you'd like to keep up on the malware threat scene: Malwarebytes Blog  https://blog.malwarebytes.com/

Hopefully, we've been able to assist you with correcting your system issues.

Thank you for using Malwarebytes. Please tell your friends and family if they too need assistance with malware removal

 

 

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 to help you better protect your computer and privacy Tips to help protect from infection

Thank you

 

 

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