Trojan:Win32/Ulthar.A!ml- Virus Removal Instructions

Trojan:Win32/Ulthar.A!ml is a heuristic detection designed to generically detect a Trojan Horse. Due to the generic nature of this threat, we are unable to provide specific information on what it does.

Trojan:Win32/Ulthar.A!ml

Typical behavior for Trojans like Trojan:Win32/Ulthar.A!ml is one or more of the following:

  • Download and install other malware.
  • Use your computer for click fraud.
  • Record your keystrokes and the sites you visit.
  • Send information about your PC, including usernames and browsing history, to a remote malicious hacker.
  • Give remote access to your PC.
  • Advertising banners are injected with the web pages that you are visiting.
  • Random web page text is turned into hyperlinks.
  • Browser popups appear which recommend fake updates or other software.
Files reported as Trojan:Win32/Ulthar.A!ml may not necessarily be malicious. Should you be uncertain as to whether a file is malicious or a false positive detection, you can submit the affected file to https://www.virustotal.com/en/ to be scanned with multiple antivirus engines.

To check your computer for malware and remove it for free, please use the guide below.

Removal Instructions for Trojan:Win32/Ulthar.A!ml

This malware removal guide may appear overwhelming due to the number of steps and numerous programs that are being used. We have only written it this way to provide clear, detailed, and easy-to-understand instructions that anyone can use to remove malware for free.
Please perform all the steps in the correct order. If you have any questions or doubt at any point, stop and ask for our assistance.
To remove the Trojan:Win32/Ulthar.A!ml, follow these steps:

STEP 1: Start your computer in Safe Mode with Networking

In this first step, we will start your computer in Safe Mode with Networking to prevent Trojan:Win32/Ulthar.A!ml malicious drivers and services from loading at Windows start-up. We’re using Safe mode because it starts Windows in a basic state, using a limited set of files and drivers.

Windows 11Windows 10Windows 7
Before you enter Safe Mode, you need to enter the Windows Recovery Environment (winRE). To do this, follow the below steps:

  1. Press Windows logo key + I on your keyboard to open Settings. If that doesn’t work, right-click on the Start button, then select Settings. In the right window, click on Recovery.
    Go to Windows Settings
  2. Under Advanced startup, select Restart now.
    Recovery window in Windows 10

Now that you are in Windows Recovery Environment, you will follow these steps to take you to safe mode:

  1. On the Choose an option screen, select “Troubleshoot“.
    Windows 11 - Start in Safe Mode with Network
  2. On the “Troubleshoot” screen, click the “Advanced Options” button.
    Windows 11 - Start in Safe Mode with Network - Step 2
  3. On the “Advanced Options” page, click the “Startup Settings” option.
    Windows 11 - Start in Safe Mode with Network - Step 3
  4. On the “Startup Settings” page, click the “Restart”.
    Windows 11 - Start in Safe Mode with Network - Step 4
  5. After your device restarts, you’ll see a list of options. Select option 5 from the list or press F5 to enter Safe Mode with Networking.
    Boot in Safe Mode Windows 11
  6. While your computer is running in Safe Mode with Networking, we will need to download, install and run a scan with Malwarebytes (explained in Step 2).
Before you enter Safe Mode, you need to enter the Windows Recovery Environment (winRE). To do this, follow the below steps:

  1. Press the Windows logo key + I on your keyboard to open Settings. If that doesn’t work, select the Start button, then select Settings.
    Go to Windows Settings
  2. When the Windows Settings window opens, select Update & Security, then click on Recovery.
    Recovery window in Windows 10
  3. Under Advanced startup, select Restart now.
    Open Advance Startup

Now that you are in Windows Recovery Environment, you will follow these steps to take you to safe mode:

  1. On the Choose an option screen, select “Troubleshoot“.
    Windows 10 - Start in Safe Mode with Network
  2. On the “Troubleshoot” screen, click the “Advanced Options” button.
    Windows 10 - Start in Safe Mode with Network - Step 2
  3. On the “Advanced Options” page, click the “Startup Settings” option. In Windows 8, this option is labeled “Windows Startup Settings” instead.
    Windows 10 - Start in Safe Mode with Network - Step 3
  4. On the “Startup Settings” page, click the “Restart”.
    Windows 10 - Start in Safe Mode with Network - Step 4
  5. After your device restarts, you’ll see a list of options. Select option 5 from the list or press F5 to enter Safe Mode with Networking.
    Boot in Safe Mode Windows 10
  6. While your computer is running in Safe Mode with Networking, we will need to download, install and run a scan with Malwarebytes (explained in Step 2).
  1. Remove all floppy disks, CDs, and DVDs from your computer, and then restart your computer.
  2. When the computer starts you will see your computer’s hardware being listed. When you see this information start to press the F8 key repeatedly until you are presented with the Advanced Boot Options.
    F8 Safe Mode
  3. In the Advanced Boot Options screen, use the arrow keys to highlight Safe Mode with Networking and then press Enter.
    Safe Mode with Networking screen
  4. While your computer is running in Safe Mode with Networking, we will need to download, install and run a scan with Malwarebytes (explained in Step 2). In some cases, victims may have issues while trying to start the computer in Safe Mode with Networking, if this happens, you can try to scan your computer with Malwarebytes in normal mode.

STEP 2: Use Malwarebytes to remove Trojan:Win32/Ulthar.A!ml

While the computer is in Safe Mode with Networking, we will download, install and run a system scan with Malwarebytes.

Malwarebytes stands out as one of the leading and widely-used anti-malware solutions for Windows, and for good reason. It effectively eradicates various types of malware that other programs often overlook, all at no cost to you. When it comes to disinfecting an infected device, Malwarebytes has consistently been a free and indispensable tool in the battle against malware. We highly recommend it for maintaining a clean and secure system.

  1. Download Malwarebytes

    Download the latest version of Malwarebytes for Windows using the official link below. Malwarebytes will scan your computer and remove adware, browser hijackers, and other malicious software for free.

    MALWAREBYTES FOR WINDOWS DOWNLOAD LINK

    (The above link will open a new page from where you can download Malwarebytes)
  2.  

    Install Malwarebytes

    After the download is complete, locate the MBSetup file, typically found in your Downloads folder. Double-click on the MBSetup file to begin the installation of Malwarebytes on your computer. If a User Account Control pop-up appears, click “Yes” to continue the Malwarebytes installation.

    MBAM1
  3. Follow the On-Screen Prompts to Install Malwarebytes

    When the Malwarebytes installation begins, the setup wizard will guide you through the process.

    • You’ll first be prompted to choose the type of computer you’re installing the program on—select either “Personal Computer” or “Work Computer” as appropriate, then click on Next.

      MBAM3 1
    • Malwarebytes will now begin the installation process on your device.

      MBAM4
    • When the Malwarebytes installation is complete, the program will automatically open to the “Welcome to Malwarebytes” screen.

      MBAM6 1
    • On the final screen, simply click on the Open Malwarebytes option to start the program.

      MBAM5 1
  4. Enable “Rootkit scanning”.

    Malwarebytes Anti-Malware will now start, and you will see the main screen as shown below. To maximize Malwarebytes’ ability to detect malware and unwanted programs, we need to enable rootkit scanning. Click on the “Settings” gear icon located on the left of the screen to access the general settings section.

    MBAM8

    In the settings menu, enable the “Scan for rootkits” option by clicking the toggle switch until it turns blue.

    MBAM9

    Now that you have enabled rootkit scanning, click on the “Dashboard” button in the left pane to get back to the main screen.

  5. Perform a Scan with Malwarebytes.

    To start a scan, click the Scan button. Malwarebytes will automatically update its antivirus database and begin scanning your computer for malicious programs.

    MBAM10
  6. Wait for the Malwarebytes scan to complete.

    Malwarebytes will now scan your computer for browser hijackers and other malicious programs. This process can take a few minutes, so we suggest you do something else and periodically check the status of the scan to see when it is finished.

    MBAM11
  7. Quarantine detected malware

    Once the Malwarebytes scan is complete, it will display a list of detected malware, adware, and potentially unwanted programs. To effectively remove these threats, click the “Quarantine” button.

    MBAM12

    Malwarebytes will now delete all of the files and registry keys and add them to the program’s quarantine.

    MBAM13

  8. Restart your computer.

    When removing files, Malwarebytes may require a reboot to fully eliminate some threats. If you see a message indicating that a reboot is needed, please allow it. Once your computer has restarted and you are logged back in, you can continue with the remaining steps.

    MBAM14

STEP 3: Scan and clean your computer with HitmanPro

In this third step, while the computer is in normal back, we will download and run a scan with HitmanPro to remove the Trojan:Win32/Ulthar.A!ml and other malicious programs.

HitmanPro is a second-opinion scanner that takes a unique cloud-based approach to malware scanning. HitmanPro scans the behavior of active files and also files in locations where malware normally resides for suspicious activity. If it finds a suspicious file that’s not already known, HitmanPro sends it to its clouds to be scanned by two of the best antivirus engines today, which are Bitdefender and Kaspersky.

Although HitmanPro is shareware and costs $24.95 for 1 year on 1 PC, there is no limit on scanning. The limitation only kicks in when there is a need to remove or quarantine detected malware by HitmanPro on your system and by then, you can activate the one-time 30-days trial to enable the cleanup.

  1. Download HitmanPro.

    You can download HitmanPro by clicking the link below.

    HITMANPRO DOWNLOAD LINK
    (The above link will open a new web page from where you can download HitmanPro)
  2. Install HitmanPro.

    When HitmanPro has finished downloading, double-click on “hitmanpro.exe” (for 32-bit versions of Windows) or “hitmanpro_x64.exe” (for 64-bit versions of Windows) to install this program on your computer. In most cases, downloaded files are saved to the Downloads folder.

    Double-click on the HitmanPro file

    You may be presented with a User Account Control pop-up asking if you want to allow HitmanPro to make changes to your device. If this happens, you should click “Yes” to continue with the installation.

    Windows asking for permissions to run the HitmanPro setup

  3. Follow the on-screen prompts.

    When HitmanPro starts you will be presented with the start screen as shown below. Click on the “Next” button to perform a system scan.

    Click Next to install HitmanPro on your PC

    HitmanPro final installer screen

  4. Wait for the HitmanPro scan to complete.

    HitmanPro will now begin to scan your computer for malicious programs.
    HitmanPro scans your computer for any infections, adware, or potentially unwanted programs that may be present

  5. Click on “Next”.

    When HitmanPro has finished the scan, it will display a list of all the malware that it has found. Click on the “Next” button to have HitmanPro remove the detected items.

    HitmanPro scan summary. Click Next to remove malware

  6. Click on “Activate free license”.

    HitmanPro may now require to activate the free 30-days trial to remove the malicious files. To do this, click on the “Activate free license” button to begin the free 30 days trial and remove all the malicious files from your computer.
    Click on the Activate free license button

    When the malware removal process is complete, it will display a screen that shows the status of the various programs that were removed. At this screen, you should click on the Next button and then if prompted you should click on the Reboot button. If HitmanPro does not prompt you to reboot, please just click on the Close button.

STEP 4: Double-check for Trojan:Win32/Ulthar.A!ml malware with ESET Online Scanner

In this fourth step, we will scan the computer with ESET Online Scanner to remove any leftover files from the Trojan:Win32/Ulthar.A!ml and other malicious programs.

ESET Online Scanner is a free second-opinion scanner, designed to rescue your computer from malware (viruses, trojans, rootkits, etc.) that have infected your computer despite all the security measures you have taken (such as anti-virus software, firewalls, etc.).

  1. Download ESET Online Scanner.

    You can download ESET Online Scanner by clicking the link below.

    ESET ONLINE SCANNER DOWNLOAD LINK

    (The above link will open a new web page from where you can download ESET Online Scanner)
  2. Double-click on esetonlinescanner.exe to run the installer.

    When ESET Online Scanner has finished downloading, double-click on “esetonlinescanner.exe” to install it program on your computer. In most cases, downloaded files are saved to the Downloads folder.
    Image - Double-click on the ESET Online Scanner setup file

  3. Install ESET Online Scanner.

    When ESET Online Scanner starts you will be presented with the start screen as shown below. Select your desired language from the drop-down menu and click Get started.

    Image - Click Get Started to install ESET Online Scanner

    In the Terms of use screen, click Accept.
    Image - Accept Terms to Install ESET Online Scanner

    Select your preference for the Customer Experience Improvement Program and the Detection feedback system and click Continue.
    Image - Follow the on-screen prompts

  4. Start a Full Scan with ESET Online Scanner

    Click on Full Scan to perform an in-depth inspection of the entire computer.

    Start a Full Scan with ESET Online Scanner

    Select Enable for Detection of Potentially Unwanted Applications, then click Start scan.

    Image - Enable PUA Detection and Start Scan

  5. Wait for the ESET Online Scanner scan to finish.

    ESET Online Scanner will now begin to scan your computer for malware. This process can take quite a while, so we suggest you do something else and periodically check on the status of the scan to see when it is finished.

    Image- Wait for the ESET Online Scanner scan to finish

  6. ESET Online Scanner will automatically remove the malicious files.

    At the end of the scan, the Found and resolved detections screen will be displayed. You can click View detailed results to view specific information. Detected threats are automatically cleaned and quarantined.
    Image - ESET Online Scanner malware removal

STEP 5: Use AdwCleaner to remove malicious browser policies

In this final step, we will use AdwCleaner to remove malicious browser policies and unwanted browser extensions from your computer.

AdwCleaner is a free popular on-demand scanner that can detect and remove malware that even the most well-known anti-virus and anti-malware applications fail to find. This on-demand scanner includes a lot of tools that can be used to fix the side effects of adware. browser hijackers and other malware.

  1. Download AdwCleaner.

    You can download AdwCleaner by clicking the link below.

    ADWCLEANER DOWNLOAD LINK

    (The above link will open a new web page from where you can download AdwCleaner)
  2. Double-click on the setup file.

    Double-click on the file named “adwcleaner_x.x.x.exe” to start AdwCleaner. In most cases, downloaded files are saved to the Downloads folder.
    Download AdwCleaner on your computer

    AdwCleaner program will now open and you will be presented with the program’s license agreement. After you read it, click on the I agree button if you wish to continue. If Windows prompts you as to whether or not you wish to run AdwCleaner, please allow it to run.

    Windows ask if you want to run AdwCleaner

  3. Enable “Reset Chrome policies” to remove malicious browser policies.

    When AdwCleaner starts, on the left side of the window, click on “Settings” and then enable “Reset Chrome policies“.

    Enable Reset Chrome policies to remove malicious browser policies

  4. Click on the “Scan” button.

    On the left side of the AdwCleaner window, click on “Dashboard” and then click “Scan” to perform a computer scan.

    Click on Scan to start a AdwCleaner scan

  5. Wait for the AdwCleaner scan to finish.

    AdwCleaner will now scan your computer for malware. This process can take a few minutes.

    AdwCleaner scanning for adware and other malware

  6. Click on “Quarantine” to remove malware.

    When the AdwCleaner scan is completed it will display all of the items it has found. Click on the “Quarantine” button to remove the malicious programs from your computer.

    Click on Quarantine to remove malware

  7. Click on “Continue” to remove the malicious programs.

    AdwCleaner will now prompt you to save any open files or data as the program will need to close any open programs before it starts to clean. Click on the “Continue” button to finish the removal process.
    Click Continue to remove malicious files

    AdwCleaner will now delete all detected malware from your computer. When the malware removal process is complete, you may be asked to restart your computer.

Your computer should now be free of the Trojan:Win32/Ulthar.A!ml and other malicious programs. If your current antivirus allowed this malicious program on your computer, you may want to consider purchasing the full-featured version of Malwarebytes Anti-Malware to protect against these types of threats in the future.
If you are still having problems with your computer after completing these instructions, then please follow one of the steps:

 

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Stelian leverages over a decade of cybersecurity expertise to lead malware analysis and removal, uncover scams, and educate people. His experience provides insightful analysis and valuable perspective.