How to remove .sfs file virus and recover the encrypted files

Complete .sfs file virus removal instructions

.sfs file virus is another variant of Djuv/STOP ransomware. After successful infiltration, sfs encrypts most of the stored files and appends .sfs extension to the filenames, e.g., a file name Original.jpg after getting encrypted by this virus get renamed as Original.jpg.sfs. Following to encrypting the data, the ransomware generates a file (HOW TO RECOVER ENCRYPTED FILES.txt) and drops a copy in every existing folder.

Threat Summary

Name: .sfs file virus

Type: Ransomware

Extension use: .sfs

Cyber Criminals contact: [email protected] , [email protected] and a proton email

Symptoms: data encrypted, ransom payment is demanded to allow users access their files

Distribution: Spam email attachments, torrent websites, malicious ads

Damages: Files get encrypted and cannot be opened without a ransom fee. Additional intrusion of some banking Trojan or other malicious malware

Removal: Use Spyhunter to delete .sfs file virus

The “HOW TO RECOVER FILES.txt” file states that files are encrypted and the victims have to pay a ransom fee to get a unique decryption tool from the ransomware developers, if they want access back their files. The short message contains two email addresses “[email protected]” and “[email protected]” of the Cyber Criminals. It also provides an additional proton mail link in case when the victims’ server doesn’t send an email to the contacts. It is not mentioned in the ransom note about the price of the decryptor, it may be later provided to the victims, once they contact them. The victims are provided free decryption of their 1-2 files less than 10MB for free. These messages might encourage you as a victim to contact the developers and purchase the decryption key from them. However, it is not so simple. In practical, you will not be provided the decryption tool even if the payment is done. Cyber Criminals behind the ransomware are not honest like you. They have only intension to generate how much money they can from you and so they might ask for more ransom payment, even if once done and again and again. It is worthless to pay ransom fee or even contacting to the Cyber Criminals. Instead of this, use some alternate reliable option. Unfortunately, there are no any tools available yet which decrypt the encrypted files, at least for free. Thus, you have to rely on existing back up for the data recovery.

There are dozens of .sfs file virus type infections that share similarities with it. These ransomware viruses have common principle: encrypt the data stored on the targeted PC by using some cipher algorithm that allows their developers to create a unique password. The developers hide that password associated with each victim under remote server and blackmail them to pay ransom fee to allegedly get a unique decryption tool. Thus, restoring data manually is impossible. Most of the viruses delete the backups and shadow volume copies on the system. That is why; you have to rely on remote server backups for the data recovery.

How did the ransomware infect my computer?

Ransomware infections are usually distributed via using Trojans, fake software updaters/cracks, third party software download sources and spam email campaigns. Trojans are the type of virus that causes chain of infections on computer. Fake software updating tool infect computer by tricking people into downloading malware manually instead of providing software updates. Similar way, cracking tool does not provide any activation key for paid software. Users, who use it, at the end, download some malicious malware. Untrustworthy software download sources such as freeware installers, P2P file sharing networks, free file hosting sites and etc spread malware by presenting it as legitimate application. Spam email campaigns are used to send deceptive method containing malicious attachments as well as deceptive messages which encourages recipients to click on the attachments. Once done, payload attached on the attachments activates and initiates malicious scripts of associated malware and causes the infection.

How to prevent the ransomware intrusion?

Caution is must if you avoid PC infection. Think twice before clicking on any spam email attachments. Use official websites for any software download rather third party downloaders/ installers and suspicious sites. Same goes for any software updates. You also require a regular installed app and Os update. For this purpose, you should use some reliable antivirus tool. Using cracking tool for activation of paid software is not a legal way and also causes malware infiltration. So you must avoid this as well.

Remove .sfs file virus

Perform .sfs file virus removal process by using the step by step manual guide mentioned below or running the system scan with some reputable antivirus tool such as Spyhunter. Remove the threat as soon as possible to avoid encryption of other files left unencrypted and other possible damages.


Recommended Ransomware Removal & File Restoration Guide

.sfs file virus is extremely robust in its nature to encrypt your files, and unless the threat is removed completely, file recovery is technically not possible. To do complete removal of .sfs file virus out of your computer. Downlaod Spyhunter Anti-Spyware Tool Now.

After the infection is completely removed out of your compromised system, you may further process the encrypted file recovery either with your own lately created backup file. Or choose a trusted data recovery program to restore your data. Download a suggested recovery tool.

How to turn your encrypted files working once again?

Well, through the above explanations mentioned, you might have learned actually what happened to your files after encryption. Since the malware that has affected your files is now removed with suggested scanner, you would still require to turn your files working. And we are now going to discuss how to accomplish this task. Based on expert’s researches and their findings, there’s a number of possible methods or ways which a user can get through to restore their encrypted files to work. Even many of victimized users have tried these methods with their own infected computer and success rate is almost 95 percent. So, you can hope to have your files back, and in order to accomplish complete restore of your infected data, we suggest you check out some suggested methods here:

Methods 1: Restore encrypted files using a powerful data recovery software

Before you start to read the steps, you should know this method is appropriate to those users who have found no solutions to decrypt their files affected by ransomware. But still they are able to utilize their system and can install a software. According to experts, this method has very low difficulty level as it utilizes a program to do so.

Although this method is called to be the safest way to recover encrypted files, it still have some limitations. Technically, the encrypted data recovery solution looks through your system and its partitions to recover original files which are actually deleted by virus to replace with the encrypted one. In many cases, the user tend to copy the encrypted files on some external drive and re-install Windows OS that actually declines the chances of data recovery through this method. So, after you have managed to clean your system against malware effects, leave the files as they are and get through the steps to restore your files using one of the top most data recovery app called Stellar Phoenix Data Recovery Software.

Step 1: At first, download the app on your system by clicking the download button below.

Step 2: Click on the downloaded file through your browser to execute its installer.

Step 3: In the license agreement page, click to accept the terms and click Next button. Further, follow on-screen instructions to complete the installation, and click on Finish button finally.

Step 4: After the installation is done, the program will run automatically. At the first interface, select the file types now that you intend to recovery followed by clicking Next.

Step 5: Select the drives over which you need the software to run over and perform the recovery of encrypted files. Done? Click on Scan button.

Step 6: The software will now scan all selected drive to complete the restore process, however it may take some time depending upon volume of drives and number of files or directories were there previously. After the scanning process ends, you will be shown with a file explorer with preview of your data which you want to recover. Just select those which you need to be restored.

Step 7: Browse a location where you want the restored data to be saved.

Method 2: Encrypted file recovery with a lately created Windows backup

This method is technically for those who have a lately created Windows backup saved somewhere and is not affected by the ransomware. Using inbuilt system recovery services, the backup can restore the files which are included under the backup. This method is considered easier as well and leaves no software, thus considered as a very popular method to fight against emergencies caused by infectious malware. Here are the steps to follow:

Step 1: Hit Win + R key combination and to execute Run command line.

Step 2: In the Run text field, type ‘ms-settings:windowsupdate’ and hit the OK button.

Step 3: You will be shown Windows update settings, but you have actually to click Backup option as shown in picture, and located in left pane.

Step 4: Click on ‘More Options’ to open Backup Options panel.

Step 5: As shown in the image below, select or click on “Restore files from a current backup.”

Step 6: In the next shown window, locate the backup where you have saved it, and click on restore button below as marked in the image.

Methods 3: Using Shadow Explorer Application

This file recovery solution is recommended to those who have their backup but is currently not working, still the files under backup are not yet deleted. In this case, Shadow Explorer is an application that can help you restoring your files from those backup files which are active, but still disabled by ransomware somehow. Under this circumstance, inbuilt Windows Backup and Recovery option will not work for you, rather the software will do the magic easily. To accomplish file recovery in this case, get through the steps here mentioned:

Step 1: Click the button below to download Shadow Explorer on your computer.

Step 2: Browser the location where you have downloaded the file. Double click and extract the zip file.

Step 3: Click to open ShadowExplorerPortable directory and double click on the file as shown in the image below.

Step 4: A drop down menu will appear on screen, so just select a desired Date and time according to your requirements on the top left of Shadow Explorer app, and choose the files in given interface that you want to restore using the software. Once the selection is done, Click on the button Export..

Methods 4: Using other decryptors

Well, this method might sounds a bit weird as every ransomware identity basically uses different enciphers and methods to encrypt files on targeted computers. But when the a ransomware which has actually infected your machine comes from a ransomware family for which a decryptor is officially working and available as well, then this might work for you. Technically, this method is just based on luck and analysis, still many users have reported this worked for them. So, if you have seen a ransomware has infected your computer, the very first thing you should do is to identity what kind of virus has actually affected your machine. In most of the cases, ransomware attacks are irreversible, still those infections basically comes from a parent ransomware which might be cracked earlier. For an instance, Scarab ransomware or Hiddentear ransomware are some families which can be decrypted. To check your luck if the present ransomware that has affected your machine is decryptable or not. To do so, follow the guidelines below:

Step 1: Check the Ransomware Database Here and check if decryptor is available for the malware

Step 2: In case you find no results, you can check an open source project called NoMoreRansom to find the ransomware details and decryptor, which has affected your machine. If found, download the decryptor on your computer’s local drive. This page is being regularly updated by its officials once a ransomware is discovered in world.

Step 3: Before you proceed with the downlaoded decryptor, make sure you have backup all your important files.

Step 4: Execute the decryptor to scan and restore your files easily.

Recommended Ransomware Removal & File Restoration Guide

.sfs file virus is extremely robust in its nature to encrypt your files, and unless the threat is removed completely, file recovery is technically not possible. To do complete removal of .sfs file virus out of your computer. Downlaod Spyhunter Anti-Spyware Tool Now.

After the infection is completely removed out of your compromised system, you may further process the encrypted file recovery either with your own lately created backup file. Or choose a trusted data recovery program to restore your data. Download a suggested recovery tool.