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I caught a Trojan


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Last night I downloaded an .exe file from an uncertain source (I was naive, I know). Windows defender didn't report anything to me but as soon as I started the Defender exe after a few seconds it detected one trojan after another (to be precise, 2 trojans and a PUM). At that moment it automatically moves everything to quarantine but a green Edge page opens (very strange because I use Chrome) with the words "Thanks for downloading :)". A very rough page with huge text in Arial. All this in a few seconds but it was enough for me to immediately understand that I was suffering from a malware infection. So I immediately open Defender but I notice that it has disappeared from the taskbar. I try to launch it but I don't see the UI. So I immediately open the task manager and kill the only application I don't know, a certain "operations.exe". I immediately do my disinfection session: rtkill, malwarebytes, adaware, KVRT, ESET Online scanner, Emsisoft emergency kit, roguekiller and HitmanPro. In total 8 malware and 6 PUMS are detected which are all successfully removed from the PC. With a bit of trouble I also managed to reactivate defender which had been disabled by a registry key and I noticed that one of the PUMS was actually "disable antispyware". I also did a full system scan with Defender and repeated the scans with all the portable scanners I listed above. 0 infections and 0 malware found. I also do a test with FARBAR Service Scanner and everything seems fine. I also take a look at system services and active apps without finding anything suspicious. In the startup apps, however, I find all the .exe malware that the offending setup had installed on me during automatic startup (clearly they could no longer start as they were completely removed by the antivirus), startups removed by deleting the registry keys from Regedit (MS Autoruns does not managed to remove them due to problems with permits). I attach the photo. Do you think I should do something else? Is it better to format the entire SSD and start from scratch or can I rest easy? My fear is that when I removed the malware automatic startup registry keys I noticed that among the user groups there are "Unknown account", I don't know if it is a Windows system account or groups created by the malware. How would you proceed?

 

Windows 11 Home Ed. 

20240115_231038.jpg

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  • Root Admin

Hello @Sickz96

 

Let's go ahead and run a couple of scans and get some updated logs from your system. Please read the entire post below before starting so that you're more familiar with the process

Then follow each step in the order provided. Unless otherwise asked, please attach all logs

 

Please make the following system changes:

  • If you have not done so already - Enable System Protection and create a NEW System Restore Point
  • Temporarily disable your antivirus real-time protection or other security software first only if it blocks or interferes with the scans or downloads.. Make sure to turn it back on once the scans are completed
  • Temporarily disable Microsoft SmartScreen to download software below only if needed. Make sure to turn it back on once the downloads are completed
  • Disable-Fast-Startup
  • Show-Hidden-Folders-Files-Extensions

Please run the following scans:

  1. Click the following link and run a  Scan with AdwCleaner
  2. Click the following link and run a  Scan with Malwarebytes 
       RESTART the computer
  3. Click the following link and run a  Scan with Farbar Recovery Scan Tool 
     

Example image of where to click to attach files when posting your reply

image.thumb.png.e208c182ff570799c53bcf57

 

Thank you

 

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  • Root Admin

Thank you for the logs.

Please run the following fix

 

NOTE: Please read all of the information below before running this fix.

  • 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.

Once the fix has been completed, please attach the file FIXLOG.TXT to your next reply

Farbar program:   FRSTEnglish.exe

Save the attached file:  FIXLIST.TXT to this folder C:\Users\Alessandro\Downloads\

NOTE. It's important that both files, FRSTEnglish.exe, 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.

 

 

Run the Farbar program with Admin rights and press the Fix button just once and wait.

The fix may possibly take up to 60 minutes to complete

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 named Fixlog.txt in the same folder you ran the Farbar program from. Please attach that log on your next reply.

 

  1. NOTE:  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.
  2. NOTE: 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 may be automatically closed.
                Also, make sure you know the passwords for all websites as cookies may possibly be removed in some cases, but not all cases.
  3. NOTE: As part of this fix, it will also reset the network to default settings including the firewall. If you have custom firewall rules you need to save please export or save them first before running this fix.

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
  • Discord 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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Thank you, here is the log file. Can i ask you if you find any trace of viruses or malware into the logs? I can see from the addition.txt regedit lines about the malware i got. Where it says "Salsify", "Dos", "DosDos", "Italins" etc. All were installed into "ProgramFiles(X86)" and "Temp" directory. I have removed those programs with scanners yestrday as i told and removed all autoruns configs with Regedit and Autoruns. (I think they was just "listed" as a "left" parts of a previous installed program because all .exes point nowhere (they was deleted yesterday).

FSS.txt

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The log is good. All files show signed, no services show impacted

Please run the following scan

 

Please download and run the following Kaspersky Virus Removal Tool 2020 and save it to your Desktop.

(Kaspersky Virus Removal Tool version 20.0.10.0 was released on November 9, 2021)

Download: Kaspersky Virus Removal Tool

https://devbuilds.s.kaspersky-labs.com/devbuilds/KVRT/latest/full/KVRT.exe

How to run a scan with Kaspersky Virus Removal Tool 2020
https://support.kaspersky.com/15674

How to run Kaspersky Virus Removal Tool 2020 in the advanced mode
https://support.kaspersky.com/15680

How to restore a file removed during Kaspersky Virus Removal Tool 2020 scan
https://support.kaspersky.com/15681

 


Select the  image.png  Windows Key and R Key together, the "Run" box should open.

user posted image

Drag and Drop KVRT.exe into the Run Box.

user posted image

C:\Users\{your user name}\DESKTOP\KVRT.exe will now show in the run box.

image.png

add -dontencrypt   Note the space between KVRT.exe and -dontencrypt

C:\Users\{your user name}\DESKTOP\KVRT.exe -dontencrypt should now show in the Run box.
 
image.png


That addendum to the run command is very important, when the scan does eventually complete the resultant report is normally encrypted, with the extra command it is saved as a readable file.

Reports are saved here C:\KVRT2020_Data\Reports and look similar to this report_20210123_113021.klr
Right-click direct onto that report, select > open with > Notepad. Save that file and attach it to your reply.

To start the scan select OK in the "Run" box.

A EULA window will open, tick all confirmation boxes then select "Accept"

image.png

In the new window select "Change Parameters"

image.png

In the new window ensure all selection boxes are ticked, then select "OK" The scan should now start...

user posted image

When complete if entries are found there will be options, if "Cure" is offered leave as is. For any other options change to "Delete" then select "Continue"

user posted image

When complete, or if nothing was found select "Close"

image.png

Attach the report information as previously instructed...
 
Thank you
 
 

 

 

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  • Root Admin

It found something and removed.

Let's run another AV scanner

 

 

Dr.Web CureIt!

Please download the Dr.Web CureIt! anti-virus utility
https://free.drweb.com/

 

You will need to send them an email to obtain a link to download the scanner, please do so

  • The downloaded file will normally have a unique name such as:  q7a9tr4p.exe
  • Close all open applications and locate the downloaded file and double-click to run it
  • The program will take a moment to launch and bring up the License and Update screen
  • Place a check mark to agree to the terms and then click on the Continue button
  • Click the underlined link Select objects for scanning
  • On the top left click the Scanning objects that should automatically check all objects
  • Click the small wrench and make sure there is a check on Automatically apply actions to threats
  • Then click the large button on bottom right Start scanning
  • Once the scan has completed there will be a link named Open report click that and a log named cureit.log should open in Notepad
  • The log is saved in the folder named Doctor Web in the top of your user profile folders
  • Please attach that log on your next reply

 

 

 

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The Cureit scan did not like an entry in your hosts file and removed it.

 

 

SecurityCheck by glax24              


I would like you to run a tool named SecurityCheck to inquire about the current security update status of some applications.
CheckSecurity is a utility for quickly checking for the presence of vulnerable applications

  • Temporarily disable Microsoft SmartScreen to download the software
  • Download SecurityCheck by glax24: https://tools.safezone.cc/glax24/SecurityCheck/SecurityCheck.exe
  • If SmartScreen blocks the file from running click on More info and Run anyway
  • This tool is safe.   Smartscreen is overly sensitive. You can check the VirusTotal scan of the tool from here
  • 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 SecurityCheckC:\SecurityCheck\SecurityCheck.txt

Items checked:

  1. User Account Control (UAC).
  2. Service pack.
  3. IE version.
  4. Automatic OS update. Sets of critical KB patches when updating is disabled.
  5. Antivirus, firewall, other security utilities.
  6. Versions of Java, Oracle Virtualbox.
  7. Version of Adobe Flash Player, Adobe AIR.
  8. Versions of Adobe Reader, Acrobat Reader DC, Foxit Reader.
  9. Versions of media players (iTunes, AIMP, foobar2000).
  10. Versions of messengers (Skype, Pidgin).
  11. Versions of installed browsers (Chrome, Opera, Firefox, Yandex, SeaMonkey).
  12. Versions of mail programs (The Bat, Thunderbird).
  13. Checking running processes and security program services
  14. Searching for installed Adware programs and optimizer programs (More than 5000).

Thank you

 

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Please update the following software.

  • Adobe Acrobat (64-bit) v.23.001.20064 Warning! Download Update | ^Please run Acrobat Reader DC and go Help - Check for updates...^
  • AMD Software v.23.8.1 Warning! Download Update
  • Discord v.1.0.9013 Warning! Download Update
  • Microsoft Visual C++ 2015-2022 Redistributable (x64) - 14.34.31931 v.14.34.31931.0 Warning! Download Update
  • Microsoft Visual C++ 2015-2022 Redistributable (x86) - 14.34.31931 v.14.34.31931.0 Warning! Download Update

 

Then RESTART the computer and check for Windows Updates and install any security updates found.

 

Let me know how the computer is running now and if there are still any signs of infection or other unresolved issues.

 

Thanks

 

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I have done all, honestly i never had any sign of infections till the start. I was just scared that somethings was left behind from the scans i listed on the OP. The PC runs smooth and fine at the moment. Do you think I have fixed all and I can feel safe? Can i delete all the programs and logs that I have generated?

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  • Root Admin

The logs are not showing any obvious infection

 

Let's go ahead and do some clean-up work and remove the tools and logs we've run.

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, ensure all boxes under Actions are checked.
  • Under Delete Quarantines select Delete Now, then click Run.
  • Once complete, click OK.
  • A log will open in Notepad titled kprm-(date).txt.
  • Please attach that file to your next reply. (not compulsory)

 

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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

 

Cybersecurity basics & protection
Everything you need to know about cybercrime
https://www.malwarebytes.com/cybersecurity

 

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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