How to Remove JavaScript File Virus

What is JavaScript File Virus?

JavaScript File virus is the name given to a specific variant of ransomware that utilizes an executable JavaScript File to unpack malware across an infected machine. The JavaScript File file is usually distributed by malicious email campaigns.

Table of Contents

• Overview
• Removal Software
• Decryption Software
• File Recovery Software
• Troubleshoot

Overview

JavaScript File ransomware is predominantly distributed by malicious emails that contain deceptive links or attachments. The email attachments or files downloaded by the links will typically consist of a.zip file or fake Microsoft Word document file. If files from the .zip file are manually extracted it will unpack a JavaScript file. When the JavaScript file is manually executed by the user or another file is opened it will cause the malware to spread across the machine.

This ransomware usually encrypts files that match certain file extensions with RSA-2048 and AES-128 ciphers. The encryption process will render the files inaccessible to the user. The encrypted files are appended the new file extension and file type, and the file name will become randomized or given a pattern such as [unique_id][identifier].[ransomware_name]. For example, a file named test.png will become 1IYBGY687G6t6g.[ransomware_name].  A ransom note (or series of ransom notes) in .html and text formats will then be placed in every folder the virus encrypted files in and on Windows desktop. In addition, Windows desktop will change to an image of the ransom note and an image file of the ransom note will also be left in every folder the virus encrypted files in.

Screenshots

The ransom note left on an infected computer by ransomware that utilizes an executable JavaScript file typically contains information about what happened to the files, links to pages on Wikipedia, and steps to download and install Tor Browser in order to visit a web address and pay a ransom.

It is suggested to avoid paying ransomware authors to decrypt your files. Instead, third-party programs Shadow Explorer, PhotoRec, or Recuva can be used to potentially recover files encrypted by this virus. A user may also be able to retrieve encrypted files by performing a system restore to a date and time before the infection occurred.

Removal Software

Decryption Software

File Recovery Software

Troubleshoot

Alternative methods are suggested if there are issues removing JavaScript File ransomware from an infected computer.

• Restore your computer to a date and time before infection
• Recover your computer to factory settings

How to Restore your computer

If a restore point has previously been established on your machine you will be able to perform a system restore in order to restore your machine to a date and time before it was infected. You will lose files on your computer that were obtained prior to the restore point.

There are several options to restore your computer. Most computers have their own restore software that can be found by performing a search. Additionally, computers that run the Windows Operating System have a default restore program that can also be found by performing a search.

A boot screen that can be used to access options to restore your computer can be reached by rebooting your computer and pressing the F8 key once the manufacture screen is displayed.

How to Recover your computer to factory settings

A system recovery (or reset) will recover your computer to factory settings. You will lose the current programs and files on your computer.

There are several options to recover your computer to factory settings. Most computers have their own recovery software that can be found by performing a search. Additionally, computers that run the Windows Operating System have a default recovery program that can also be found by performing a search.

A boot screen that can be used to access options to restore your computer can be reached by rebooting your computer and pressing the F8 key once the manufacture screen is displayed.