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Remove OSFirewall.exe 1-855-270-1376 Fake Security Alert

Security researchers have identified a suspicious pop-up which appears to be caused by the process OSFirewall.exe. Once the process is running actively on the user PC, it displays a pop-up with a scareware message prompting to call the number 1-855-270-1376. In case you see the pop-ups, there is a good chance you might have a virus or a potentially unwanted program that is causing them. It is strongly recommended to scan your device for malware using the instructions provided in the article.

Name OSFirewall.exe
Type Fake tech support pop-up executable
Short Description The pop-up do various dangerous or unhealthy to the PC activities.
Symptoms Users may witness fake pop-ups as well as error messages and other pop-ups leading to other potentially harmful domains.
Distribution Method Via PUPs, added by bundling or by visiting a suspicious third-party site that is advertising it. Likelihood that it may be downloaded by a Trojan onto the affected computer.
Detection Tool Download Malware Removal Tool, to See If Your System Has Been Affected by malware
User Experience Join our forum to discuss OSFirewall.exe.

OSFirewall.exe Alert – How Did I Get It

Usually, suspicious executables may be downloaded as a result of having an ad-supported program that displays various advertisements. Such are included in installers when you download free software from suspicious third-party sites. There is also the scenario of you having malware on your computer, such as Trojan.Downloader that may have opened up a port and may actively be downloading other non-allowed software onto your computer from a foreign host.

OSFirewall.exe Alert In Detail

Once the executable is activated onto the victim’s PC, it begins to display pop-ups in Windows that seem very legitimate and would easily fool any user without experience. The pop-up features a scareware message, asking to call 1-855-270-1376. However this may not be the only phone number associated with this cunning tech support scam:

“Security Warning
Suspicious Activity Found
During a routine scan, We’ve found a possible virus, we cannot automatically remove. Please call the number listed below to get step by step guidance to secure your computer.
Call Now:{PHONE NUMBER}”

There is also an additional error message that appears, and it looks like the following:

error-message-osfirewall-scam-sensorstechforum

When the phone number itself was thoroughly researched, we have concluded that there were numerous reports on websites such as okcaller:

not-safe-sensorstechforum

The Bottom Line and How To Stop and Remove

In conclusion, this is known as fake tech support scam, pretending to be Windows Firewall. The “customer support” staff may actually be scammers pretending to be Microsoft employees. What the scammers do is convince users into calling the numbers after which extract different information from them. Such information may include their personal credentials (Social security numbers, etc.), their financial information(credit/debit card numbers, security codes, online banking accounts, bitcoin information, etc.) and other. Also, another danger associated with such callers is that they usually subscribe the user without his/her consent to an expensive service that drains money from their SIM card. This is why if you called this number, you should immediately take into consideration blocking it out from your phone and call your operator to block any incoming as well as outgoing connections.

When it comes to the virus itself (OSFirewall.exe), you should follow the instructions provided below to remove it and any other malware that may be associated with it and prevent future intrusions and scams from affecting you.

1. Restore the settings in your browser

1. Remove OSFirewall.exe from your browser and restart it.

First, close your browser from the Windows Task Manager by pressing ? and X together and choosing Task manager. After that locate your browser, right click it from the list and click on End Task. After that open your browser in private/incognito mode and follow this manual to remove OSFirewall.exe:

Remove a toolbar from Mozilla Firefox and reset itRemove a toolbar from Google Chrome and reset it. Remove an add-on from Internet Explorer and reset it. Remove an extension from Safari and reset it.

Step 1:Remove Firefox Add-ons

Start Mozilla Firefox Open the menu window

uninstall-fig4

Select the “Add-ons” icon from the menu

uninstall-fig5

Select OSFirewall.exe and click “Remove

uninstall-fig6

After OSFirewall.exe is removed, restart Mozilla Firefox by closing it from the red “X” in the top right corner and start it again.

Step 2: Reset Firefox

IMPORTANT: Before resetting Firefox make sure you back up all your saved passwords within the browser in case you forget them.

Right-click on Firefox on its icon in the taskbar and click New Private Window to enter private browsing.

Type about:support in your address bar.

Click on the ‘Refresh Firefox’ and accept any prompts from Firefox to save your old data before resetting.

Start Google Chrome and Open the drop menu

Step 1: Remoove Google Chrome Extensions

uninstall-fig7

  • Move the cursor over “Tools” and then from the extended menu choose “Extensions
  • uninstall-fig8

  • From the opened “Extensions” menu locate OSFirewall.exe and click on the garbage bin icon on the right of it.
  • uninstall-fig9

  • After OSFirewall.exe is removed, restart Google Chrome by closing it from the red “X” in the top right corner and start it again.
  • Step 2: Reset Google Chrome

    IMPORTANT: Before resetting Google Chrome make sure you back up all your saved passwords within the browser in case you forget them.

    Right-click on the Chrome taskbar icon and then choose ‘New Incognito Window’. This will start Chrome without any home pages.

    Type chrome://settings/resetProfileSettings and then click on the ‘Reset’ button.

    Step 1: Remove add-ons from Internet Explorer

    Start Internet Explorer:

  • Click “‘Tools’ to open the drop menu and select ‘Manage Add-ons’
  • uninstall-fig10

  • In the ‘Manage Add-ons’ window, make sure that in the first window ‘Add-on Types’, the drop menu ‘Show’ is on ‘All add-ons’
  • uninstall-fig11

    Select OSFirewall.exe to remove, and then click ‘Disable’. A pop-up window will appear to inform you that you are about to disable the selected toolbar, and some additional toolbars might be disabled as well. Leave all the boxes checked, and click ‘Disable’.

    uninstall-fig12

    After OSFirewall.exe has been removed, restart Internet Explorer by closing it from the red ‘X’ in the top right corner and start it again.

    Step 2: Reset Internet Explorer

    IMPORTANT: Before resetting Internet Explorer make sure you back up all your saved passwords within the browser in case you forget them.

    Right-click on Internet Explorer’s icon and choose Start In-Private Browsing.

    Click the gear leaver icon in the top right side of IE and choose Internet Options from the drop-down menu.

    Click on the Advanced Tab after which click the ‘Reset’ button. Wait a little for the ticks to complete and you should be fine.

    Step 1: Remove Safari extensions

    Start Safari

    Open the drop menu by clicking on the sprocket icon in the top right corner.
    uninstall-fig13

    From the drop menu select ‘Preferences’
    In the new window select ‘Extensions’
    Click once on OSFirewall.exe
    Click ‘Uninstall’

    uninstall-fig14

    A pop-up window will appear asking for confirmation to uninstall OSFirewall.exe. Select ‘Uninstall’ again, and the OSFirewall.exe will be removed.

    Step 2: Reset Safari

    IMPORTANT: Before resetting Safari make sure you back up all your saved passwords within the browser in case you forget them.

    Start Safari and then click on the gear leaver icon.

    Click the Reset Safari button and you will reset the browser.

    2. Remove OSFirewall.exe with SpyHunter Anti-Malware Tool

    2. Remove OSFirewall.exe with SpyHunter Anti-Malware Tool

    1. Install SpyHunter to scan for and remove OSFirewall.exe.3. Scan with SpyHunter to Detect and Remove OSFirewall.exe.
    Step 1: Click here to go to SpyHunter’s download instruction page.
    Step 2: Guide yourself by the download instructions provided for each browser.
    Step 3: After you have installed SpyHunter, wait for it to automatically update.

    pets-by-myway-ads-virus

    Step1: After the update process has finished, click on the ‘Scan Computer Now’ button.
    pets-by-myway-ads-virus
    Step2: After SpyHunter has finished scanning your PC for any OSFirewall.exe files, click on the ‘Fix Threats’ button to remove them automatically and permanently.
    pets-by-myway-ads-virus
    Step3: Once the intrusions on your PC have been removed, it is highly recommended to restart it.

    Optional: Using Alternative Anti-Malware Tools

    Remove OSFirewall.exe Using Other Alternative Tools

    STOPZilla Anti Malware
    1. Download and Install STOPZilla Anti-malware to Scan for And Remove OSFirewall.exe.
    Step 1: Download STOPZilla by clicking here.
    Step 2: A pop-up window will appear. Click on the ‘Save File’ button. If it does not, click on the Download button and save it afterwards.
    pets-by-myway-ads-virus
    Step 3: After you have downloaded the setup, simply open it.
    Step 4: The installer should appear. Click on the ‘Next’ button.
    pets-by-myway-ads-virus
    Step 5: Check the ‘I accept the agreement’ check circle if not checked if you accept it and click the ‘Next’ button once again.
    pets-by-myway-ads-virus
    Step 6: Review and click on the ‘Install’ button.
    pets-by-myway-ads-virus
    Step 7: After the installation process has completed click on the ‘Finish’ button.

    2. Scan your PC with STOPZilla Anti Malware to remove all OSFirewall.exe associated files completely.
    Step 1: Launch STOPZilla if you haven’t launched it after install.
    Step 2: Wait for the software to automatically scan and then click on the ‘Repair Now’ button. If it does not scan automatically, click on the ‘Scan Now’ button.
    pets-by-myway-ads-virus
    Step 3: After the removal of all threats and associated objects, you should Restart your PC.

    Avatar

    Ventsislav Krastev

    Ventsislav is a cybersecurity expert at SensorsTechForum since 2015. He has been researching, covering, helping victims with the latest malware infections plus testing and reviewing software and the newest tech developments. Having graduated Marketing as well, Ventsislav also has passion for learning new shifts and innovations in cybersecurity that become game changers. After studying Value Chain Management, Network Administration and Computer Administration of System Applications, he found his true calling within the cybersecrurity industry and is a strong believer in the education of every user towards online safety and security.

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    Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer

    How to Remove OSFirewall.exe from Windows.


    Step 1: Boot Your PC In Safe Mode to isolate and remove OSFirewall.exe

    OFFER

    Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
    We Recommend To Scan Your PC with SpyHunter

    Keep in mind, that SpyHunter’s scanner is only for malware detection. If SpyHunter detects malware on your PC, you will need to purchase SpyHunter's malware removal tool to remove the malware threats. Read our SpyHunter 5 review. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria

    1. Hold Windows key() + R


    2. The "Run" Window will appear. In it, type "msconfig" and click OK.


    3. Go to the "Boot" tab. There select "Safe Boot" and then click "Apply" and "OK".
    Tip: Make sure to reverse those changes by unticking Safe Boot after that, because your system will always boot in Safe Boot from now on.


    4. When prompted, click on "Restart" to go into Safe Mode.


    5. You can recognise Safe Mode by the words written on the corners of your screen.


    Step 2: Uninstall OSFirewall.exe and related software from Windows

    Here is a method in few easy steps that should be able to uninstall most programs. No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it. To do that:


    1. Hold the Windows Logo Button and "R" on your keyboard. A Pop-up window will appear.


    2. In the field type in "appwiz.cpl" and press ENTER.


    3. This will open a window with all the programs installed on the PC. Select the program that you want to remove, and press "Uninstall"
    Follow the instructions above and you will successfully uninstall most programs.


    Step 3: Clean any registries, created by OSFirewall.exe on your computer.

    The usually targeted registries of Windows machines are the following:

    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce

    You can access them by opening the Windows registry editor and deleting any values, created by OSFirewall.exe there. This can happen by following the steps underneath:

    1. Open the Run Window again, type "regedit" and click OK.


    2. When you open it, you can freely navigate to the Run and RunOnce keys, whose locations are shown above.


    3. You can remove the value of the virus by right-clicking on it and removing it.
    Tip: To find a virus-created value, you can right-click on it and click "Modify" to see which file it is set to run. If this is the virus file location, remove the value.

    IMPORTANT!
    Before starting "Step 4", please boot back into Normal mode, in case you are currently in Safe Mode.
    This will enable you to install and use SpyHunter 5 successfully.

    Step 4: Scan for OSFirewall.exe with SpyHunter Anti-Malware Tool

    1. Click on the "Download" button to proceed to SpyHunter's download page.


    It is recommended to run a scan before purchasing the full version of the software to make sure that the current version of the malware can be detected by SpyHunter. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria.


    2. After you have installed SpyHunter, wait for it to update automatically.

    SpyHunter5-update-2018


    3. After the update process has finished, click on the 'Malware/PC Scan' tab. A new window will appear. Click on 'Start Scan'.

    SpyHunter5-Free-Scan-2018


    4. After SpyHunter has finished scanning your PC for any files of the associated threat and found them, you can try to get them removed automatically and permanently by clicking on the 'Next' button.

    SpyHunter-5-Free-Scan-Next-2018

    If any threats have been removed, it is highly recommended to restart your PC.


    Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer

    Get rid of OSFirewall.exe from Mac OS X.


    Step 1: Uninstall OSFirewall.exe and remove related files and objects

    OFFER
    Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
    We Recommend To Scan Your Mac with SpyHunter for Mac
    Keep in mind, that SpyHunter for Mac needs to purchased to remove the malware threats. Click on the corresponding links to check SpyHunter’s EULA and Privacy Policy


    1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:


    2. Find Activity Monitor and double-click it:


    3. In the Activity Monitor look for any suspicious processes, belonging or related to OSFirewall.exe:

    Tip: To quit a process completely, choose the “Force Quit” option.


    4. Click on the "Go" button again, but this time select Applications. Another way is with the ⇧+⌘+A buttons.


    5. In the Applications menu, look for any suspicious app or an app with a name, similar or identical to OSFirewall.exe. If you find it, right-click on the app and select “Move to Trash”.


    6: Select Accounts, after which click on the Login Items preference. Your Mac will then show you a list of items that start automatically when you log in. Look for any suspicious apps identical or similar to OSFirewall.exe. Check the app you want to stop from running automatically and then select on the Minus (“-“) icon to hide it.


    7: Remove any left-over files that might be related to this threat manually by following the sub-steps below:

    • Go to Finder.
    • In the search bar type the name of the app that you want to remove.
    • Above the search bar change the two drop down menus to “System Files” and “Are Included” so that you can see all of the files associated with the application you want to remove. Bear in mind that some of the files may not be related to the app so be very careful which files you delete.
    • If all of the files are related, hold the ⌘+A buttons to select them and then drive them to “Trash”.

    In case you cannot remove OSFirewall.exe via Step 1 above:

    In case you cannot find the virus files and objects in your Applications or other places we have shown above, you can manually look for them in the Libraries of your Mac. But before doing this, please read the disclaimer below:

    Disclaimer! If you are about to tamper with Library files on Mac, be sure to know the name of the virus file, because if you delete the wrong file, it may cause irreversible damage to your MacOS. Continue on your own responsibility!

    1: Click on "Go" and Then "Go to Folder" as shown underneath:

    2: Type in "/Library/LauchAgents/" and click Ok:

    3: Delete all of the virus files that have similar or the same name as OSFirewall.exe. If you believe there is no such file, do not delete anything.

    You can repeat the same procedure with the following other Library directories:

    → ~/Library/LaunchAgents
    /Library/LaunchDaemons

    Tip: ~ is there on purpose, because it leads to more LaunchAgents.


    Step 2: Scan for and remove OSFirewall.exe files from your Mac

    When you are facing problems on your Mac as a result of unwanted scripts and programs such as OSFirewall.exe, the recommended way of eliminating the threat is by using an anti-malware program. SpyHunter for Mac offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.


    Click the button below below to download SpyHunter for Mac and scan for OSFirewall.exe:


    Download

    SpyHunter for Mac



    Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


    Remove OSFirewall.exe from Google Chrome.


    Step 1: Start Google Chrome and open the drop menu


    Step 2: Move the cursor over "Tools" and then from the extended menu choose "Extensions"


    Step 3: From the opened "Extensions" menu locate the unwanted extension and click on its "Remove" button.


    Step 4: After the extension is removed, restart Google Chrome by closing it from the red "X" button at the top right corner and start it again.


    Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


    Erase OSFirewall.exe from Mozilla Firefox.

    Step 1: Start Mozilla Firefox. Open the menu window


    Step 2: Select the "Add-ons" icon from the menu.


    Step 3: Select the unwanted extension and click "Remove"


    Step 4: After the extension is removed, restart Mozilla Firefox by closing it from the red "X" button at the top right corner and start it again.



    Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


    Uninstall OSFirewall.exe from Microsoft Edge.


    Step 1: Start Edge browser.


    Step 2: Open the drop menu by clicking on the icon at the top right corner.


    Step 3: From the drop menu select "Extensions".


    Step 4: Choose the suspected malicious extension you want to remove and then click on the gear icon.


    Step 5: Remove the malicious extension by scrolling down and then clicking on Uninstall.



    Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


    Remove OSFirewall.exe from Safari.


    Step 1: Start the Safari app.


    Step 2: After hovering your mouse cursor to the top of the screen, click on the Safari text to open its drop down menu.


    Step 3: From the menu, click on "Preferences".

    stf-safari preferences


    Step 4: After that, select the 'Extensions' Tab.

    stf-safari-extensions


    Step 5: Click once on the extension you want to remove.


    Step 6: Click 'Uninstall'.

    stf-safari uninstall

    A pop-up window will appear asking for confirmation to uninstall the extension. Select 'Uninstall' again, and the OSFirewall.exe will be removed.


    How to Reset Safari
    IMPORTANT: Before resetting Safari make sure you back up all your saved passwords within the browser in case you forget them.

    Start Safari and then click on the gear leaver icon.

    Click the Reset Safari button and you will reset the browser.


    Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


    Eliminate OSFirewall.exe from Internet Explorer.


    Step 1: Start Internet Explorer.


    Step 2: Click on the gear icon labeled 'Tools' to open the drop menu and select 'Manage Add-ons'


    Step 3: In the 'Manage Add-ons' window.


    Step 4: Select the extension you want to remove and then click 'Disable'. A pop-up window will appear to inform you that you are about to disable the selected extension, and some more add-ons might be disabled as well. Leave all the boxes checked, and click 'Disable'.


    Step 5: After the unwanted extension has been removed, restart Internet Explorer by closing it from the red 'X' button located at the top right corner and start it again.


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