Remove MedusaLocker Virus (+Decrypt .ReadInstructions files)

MedusaLocker – Ransomware

The MedusaLocker stands for a ransomware-type infection. MedusaLocker was elaborated particularly to encrypt all major file types. When the file is encrypted people are unable to use them. MedusaLocker adds the “.ReadInstructions” extension for each file encrypted by it. For example, the file “myphoto.jpg“, as soon as encrypted by MedusaLocker, will be renamed into “myphoto.jpg.ReadInstructions“. As soon as the encryption is finished, MedusaLocker places a special text file into every folder containing the encrypted data.

The message given by MedusaLocker text file requesting the ransom is absolutely the like the statements given by other ransomware representatives. It actually mentions that the information is encrypted and that the only way to bring back it is to use a a special decryption key. Sadly, this is absolutely true. The type of cryptography mechanism used by MedusaLocker is still not correctly examined. Still, it is definitely specific that each victim might be given the specific decryption key, which is absolutely distinct. It is impossible to bring back the files without the key available.

Another trick of MedusaLocker is that the victims cannot get to the key. The key is saved on a particular server run by the frauds connected with MedusaLocker ransomware. To get the key and recover the important information people have to pay the ransom.

However, irrespective of the requested amount, people need to keep away from paying the ransom virus. Cyber frauds are unfair, so they tend to completely disregard what their victims feel about the problem, even when the payment reaches their pockets. This is why paying the ransom generally does not give any positive result and people simply lose their money for nothing.

We highly advise that you do not contact these crooks and certainly do not transfer money into their accounts. It is said to admit that there are no utilities able to crack MedusaLocker ransomware and to recover the information data free of charge. Therefore, the only right decision is to recover the lost information from the available backup.

Virus Summary

NameMedusaLocker Ransomware
File Extension.ReadInstructions
TypeRansomware
Short DescriptionThe ransomware encrypts all the data stored on your system and requires a ransom to be paid on your part supposedly to recover your important files.
SymptomsFile encryption by the ransomware is performed by means of the AES and RSA encryption algorithms. Once the encryption is completed, the ransomware adds its special ReadInstructions extension to all the files modified by it.
Distribution MethodSpam Emails, Email Attachments
Removal Tool   GridinSoft Anti-Malware

Remember that the world wide web is now overwhelmed with threats that look comparable to MedusaLocker ransomware. Malicious programs of such kind are normally elaborated to encrypt crucial data and to state the demand before the user to pay the ransom. The peculiarity of all such ransomware threats is that all apply a similar algorithm to generate the distinct decryption key for data decryption.

Thus, as long as the ransomware is still being developed or has some hidden bugs, manually recovering the information is merely not feasible. The only way to avoid the loss of your essential information is to frequently create backups of your important information.

Keep in mind that even if you create such backups, they must be put into a special storage utility not connect to your main PC. You may use the USB Flash Drive or external hard disk drive for this purpose, or refer to the help of the cloud storage. If you save your backup files on your common system they may be encrypted together with other files, so it’s definitely not a good storage place.

How did ransomware infect my computer?

There are several methods used by online frauds to distribute MedusaLocker ransom virus. Even though it doubts how exactly MedusaLocker injects your PC, there are some leaks through which it may penetrate the system:

  • integration with third-party apps, especially freeware;
  • spam e-mails from unknown senders;
  • sites rendering free hosting services;
  • pirated peer-to-peer (P2P) downloads.

Frequently MedusaLocker virus may exist as some genuine software, for example, in the pop-ups instructing users to execute some crucial software application updates. This is the typical trick used by online frauds to persuade people into downloading and installing MedusaLocker infection manually, by ways of their direct participation in the installation process.

In addition, the criminals may refer to different e-mail spam strategies to inject harmful codes into PC. So, they may describe to sending unsolicited spam emails with tricky notifications promoting users to download the attachments or click on certain download links, for example, the ones motivating users to open some photos, files, tax reports or invoices.

Needless to mention, opening such files or clicking on such dangerous links may badly damage the PC. Fictitious Adobe Flash Player upgrade notifies may result in MedusaLocker virus injection. When it comes to the cracked software, these illegally downloaded programs may likewise include harmful codes resulting in MedusaLocker secret installation. Lastly, injection of MedusaLocker may take place by means of Trojans that covertly get injected into the system and set up malicious utilities without the user’s authorization.

Is there any method to prevent the injection of MedusaLocker ransomware?

Although there is no 100% guarantee to prevent your computer from getting infected, there are some pieces of advice we want to share with with you. First off, be very careful when you browse the web and especially while downloading free programs. Keep away from opening suspicious email attachments, especially when the sender of the email is not familiar to you.

Bear in mind that some freeware installers may contain other unwanted utilities in the bundle, so they may be malicious. Ensure that your current anti-virus and your entire OS is always appropriately updated.

Of course, downloading pirated software is prohibited and may result in essential damage to be produced your PC. Hence, stay away from downloading cracked software. You are also strongly recommended to reconsider your existing security software and perhaps switch to another security solution that can render better services of protecting your Windows.

Screenshot of files with “.ReadInstructions” extension added by the ransomware:
MedusaLocker Ransomware - encrypt files with .ReadInstructions extension

Use GridinSoft Anti-Malware to remove MedusaLocker ransomware from your computer

1.Download GridinSoft Anti-Malware.

You can download GridinSoft Anti-Malware by clicking the button below:

  GridinSoft Anti-Malware

2. Double-click on the setup file.

When setup file has finished downloading, double-click on the setup-antimalware-ag.exe file to install GridinSoft Anti-Malware on your computer.
GridinSoft Anti-Malware
An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.
GridinSoft Anti-Malware Setup

3. Press Install button for run GridinSoft Anti-Malware.

GridinSoft Anti-Malware Install

3.Once installed, GridinSoft Anti-Malware will automatically run.

GridinSoft Anti-Malware  Start

4. Wait for the GridinSoft Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your computer for Win Speedup 2018 and other malicious programs. This process can take a 20-30 minutes, so we suggest you periodically check on the status of the scan process.
GridinSoft Anti-Malware Scan

5. Click on “Clean Now”.

When the scan has completed, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.
GridinSoft Anti-Malware Scan Result

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About Daniel Zimmermann

Daniel Zimmermann has been writing on security and malware subjects for many years and has been working in the security industry for over 10 years. Daniel was educated at the Saarland University in Saarbrücken, Germany and currently lives in New York.

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