THREAT REMOVAL

How to Open .js Files ( Javascript Hidden Virus)

how-to-open-do-not-open-js-files-sensorstechforum-comSince many of the users on our forum and on our complaint e-mails have reported to be victims of infections caused by .js files(JavaScript source code file format) we have decided to serve the need of knowledge our readers should have and educate them how to protect themselves from malicious execution of a JavaScript that may render their files equal to garbage and make them pay a hefty sum. Bear in mind, we will provide the best advices on our abilities, but even the best advise won’t protect you if you do not pay attention to what you are doing while browsing on a daily basis. Let us begin!

The E-mail

This segment is the most important piece of education you will ever receive if you are a beginner, because it will briefly teach you how to spot the difference between fake e-mail messages and actual e-mails. This is also due to the fact that the most often cause of infection by .js files viruses is via e-mail attachments. So when we are talking about .js files protection, we are also addressing spam e-mail protection as well.

The first step when receiving an e-mail and deciding whether or not to open a .js file in it is to have a system. Such system is very simple to memorize. If I could summarize it, I would definitely use this sentence:

“Start from the top!”

The “top” is the subject of the e-mail that is sent to you and the source e-mail it is sent from. Here you can sort out the cheap e-mails which you can immediately delete even without having to open them. These are the so-called “promotion” and “important” e-mails that are not from organizations, but different individuals that you have never met before. Usually, people tend to write e-mail topics of something familiar to the user who they are sending the message to. Otherwise, why would have provided your e-mail address to specific people for contact, right?

fake-e-mail-sensorstechforum

But then again, what if the message does not have a subject or what if it is sent by a company, like Amazon, for example (see the picture below). And what if the e-mail is saying that your PayPal account is suspended? The counter reaction to this in case you are not sure is to use a secure environment when opening the e-mail.Also, bear in mind of the obvious, and this is if a .js file is portrayed to you as a document in an e-mail, it may not be, because it is highly untypical for documents to be in JavaScript.

stf-locky-ransomware-virus-zzzzz-file-extension-spam-email-amazon-spoof-zip-js-payload-script-file-attached

One solution is to use a sandbox application that “wraps” your web browser or e-mail client (Mozilla Thunderbird, Microsoft Outlook) in a secure encryption on which if the ransomware infection malware is activated, may immediately shut down because it will be stopped inside the program. One very good example for a sandbox application is a neat little app, called Sandboxie which we tested below. It even has the option to auto wrap every program you start in a sandbox automatically without affecting the performance of your computer even the slightest.

sandboxie-software-review-js-files-do-not-open-sensorstechofrum

However, some sophisticated viruses and malware who run on .js to infect users may be coded and obfuscated with expensive obfuscators and exploit kits that may even go as far as through the sandbox application itself. Here is where you will need an advanced protection tool against these programs when you do your e-mailing – an advanced anti-malware tool is just the thing for you. Unlike traditional antivirus programs, most anti-malware programs are more frequently updated, and they are not just focused on .js malware, but on other suspicious files roaming around in spam e-mails carrying what may just be the lasts Locky or Cerber viruses.

There are a variety of anti-malware programs to choose from out there, and many would argue that the more well-known a security software is, the more it becomes a target for malware, because of the higher interest in it. This is why there should be a balance between a tool on which the hackers have little intelligence while at the same time is frequently maintained and updated. The best choice is a tool that will have a second-generation heuristic update system. This means that if the latest Locky hits in the U.S., the program on your computer should know about this and have the heuristics as fast as possible after this “zero patient” type of infection. One good example for such tool is Heimdal’s professional version, which we have kindly reviewed for you below and in case you do not seem to be fond of it it there are many other tools out there amongst which you can choose.

related-heimdal-pro-software-review-open-js-files-sensorstechforum

What If I Don’t Have the Time or Experience To Check Every E-mail?

In case the situation is that dire, or you are going to be educating someone who is systematically becoming infected via e-mail and via JavaScript and other types of files, do not worry. Explaining the situation to the inexperienced user may not be successful even if you repeat It over and over again. This is why we have a brilliant idea which can help protect your daily e-mailing if you are running a Windows OS and this is to use a virtual Android OS straight on your Windows device. Craftily, right?

The idea for this unexpectedly smart solution is that most spam e-mails are designed to trick Windows users into becoming infecting with malware. Surely, there is a lot of malware written for Android, but provided a little education and malware writers prefer malicious URLs via fake advertisements or suspicious apps to infect Android users, not e-mail. More to it than that, Android devices can also be additionally secured from .js files infection with an antivirus software and other utilities and app monitors, which is great. One app that is the leader and is very simple to use (install and start) is called Nox App Player, and after using it, we felt convinced in its stability as well as security

nox-app-player-how-to-open-js-files-sensorstechforum

What about Malicious URLs?

Malicious URLs are a very sophisticated method of infection and very effective as well. This is why if the proper script is written to counter your defenses, neither of the tools above may save you. Here is where we talk about direct protection against any form of malicious JavaScript files. To secure your computer, this way, especially if you are using a browser instead of an e-mail client is to educate yourself in scanning URLs manually before opening. I know, it looks complicated at the start, but bear in mind that it can be significantly simplified with free browser add-ons, like VTzilla, VirusTotal.com’s web browser add-on. Need I remind you that VIrusTotal is most likely the one of the largest (if not, the largest) web database for malware and it not only uses the combination of a wide database of malicious .js files being detected 24/7 but it also learns to detect any URL’s and malicious JavaScripts before you even opened them. All it takes to right click on the URL before opening and scan it.

What If the Inevitable Happens?

If you are using any of those beginner tools, regularly updating your operating system, etc. and still manage to become infected somehow with a .js files attack, good data management is crucial to your survival from the devastation. Below, you may find more information on how to safely store your important files and protect them from .js files viruses.

safely-store-your-files-js-sensorstechforum

Since a lot of malware including ransomware, now may not only slither other viruses on your computer if it becomes its victim, but it may also spread worms or make the computer a part of a botnet (bot network). This makes all of the other computers connected to the same network endangered, and they may not have such defensive tools. This is why, before all, your first deal of business is to disconnect the computer from the internet “the hardware way”. This will prevent any malicious packets to travel on your LAN and infect the other devices in it. From there, you can begin coping with the situation.

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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 .js Files from Windows.


Step 1: Boot Your PC In Safe Mode to isolate and remove .js Files

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 .js Files 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 .js Files 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 .js Files 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 .js Files 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 .js Files from Mac OS X.


Step 1: Uninstall .js Files 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 .js Files:

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 .js Files. 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 .js Files. 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 .js Files 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 .js Files. 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 malware from your Mac

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



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


Remove .js Files 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 .js Files 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 .js Files 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 .js Files 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 .js Files 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 .js Files 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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