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How to remove GEROSAN File Virus (+Decrypt .gerosan files)

GEROSAN – General Info

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

The message given by GEROSAN text file requesting for the ransom is absolutely the like the statements given by other ransomware representatives belonging to the Djvu type. It literally points out that the information is encrypted which the only way to restore it is to use a a special decryption key. Unfortunately, this is definitely true. The type of cryptography mechanism applied by GEROSAN is still not properly examined. Still, it is absolutely specific that each victim may be given the specific decryption key, which is totally distinct. It is difficult to bring back the files without the key available.

Another technique of GEROSAN is that the victims cannot gain access to the key. The key is kept on a specific server run by the frauds connected with GEROSAN ransomware. To get the key and recover the important info people need to pay the ransom, which amounts to $980. To obtain the payment information users are advised to contact the frauds through e-mail or telegram. The alert also shows that the users need to contact the GEROSAN developers within 72 hours after the encryption took place. The message says that doing so users will get a 50% discount, so the ransom quantity will drop down to $490.

Nevertheless, regardless of the asked for quantity, people must stay away from paying the virus. Cyber frauds are not fair, so they tend to entirely ignore what their victims feel about the issue, even when the payment reaches their pockets. This is why paying the ransom generally does not give any positive result and people just waste their money for nothing.

We highly encourage that you do not contact these crooks and definitely do not transfer money into their accounts. It is said to admit that there are no utilities able to crack GEROSAN ransomware and to recover the information data for free. Therefore, the only best decision is to recover the lost information from the available backup.

Virus Summary

Name GEROSAN Ransomware
File Extension .gerosan
Type Ransomware
Family Djvu
Short Description The 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.
Symptoms File 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 gerosan extension to all the files modified by it.
Distribution Method Spam Emails, Email Attachments
Similar Infections Vesad, Gerosan, Muslat
Removal Tool   GridinSoft Anti-Malware

Keep in mind that the world wide web is now overwhelmed with threats that look similar to GEROSAN ransomware. It is similar Vesad and many other ransomware-type threats. Harmful programs of such kind are normally elaborated to encrypt essential information and to state the need before the user to pay the ransom. The peculiarity of all such ransomware threats is that all apply a comparable algorithm to produce the unique decryption key for information decryption.

Hence, as long as the ransomware is still being developed or has some hidden bugs, by hand recovering the information is just not feasible. The only way to avoid the loss of your important files is to frequently create backups of your important information.

Keep in mind that even if you create such backups, they should be put into a special storage utility not connect to your main PC. You may use the Memory Stick or external hard drive for this purpose, or refer to the help of the cloud storage. If you store your backup files on your common system they may be encrypted in addition to other files, so it’s certainly not a good storage place.

How did ransomware infect my computer?

There are a number of methods used by online frauds to distribute GEROSAN virus. Although it is uncertain how exactly GEROSAN injects your computer, there are some leaks through which it may penetrate the system:

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

Frequently GEROSAN virus might exist as some genuine software, for instance, in the pop-ups advising users to execute some important software updates. This is the typical trick used by online frauds to persuade people into downloading and installing GEROSAN infection manually, by ways of their direct participation in the installation process.

Furthermore, the criminals might describe numerous email spam methods to inject harmful codes into Windows PC. So, they may describe to sending unsolicited spam e-mails with tricky notifications promoting users to download the attachments or click on certain download links, for example, the ones motivating users to open some video, files, tax reports or invoices.

Needless to mention, opening such files or clicking on such dangerous links may significantly damage the PC. Fictitious Adobe Flash Player update notifies may result in GEROSAN virus injection. As for the cracked applications, these illegally downloaded programs may likewise include destructive codes leading to GEROSAN secret installation. Lastly, injection of GEROSAN may happen by means of Trojans that privately get injected into the system and install destructive utilities without the user’s authorization.

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

Despite the fact that there is no 100% guarantee to prevent your computer from getting infected, there are some pieces of recommendations we wish to share with with you. First of all, be extremely careful when you browse the web and particularly while downloading complimentary apps. Keep away from opening suspicious email attachments, especially when the sender of the email is not familiar to you.

Keep in mind that some freeware installers may include other unwanted utilities in the package, so they may be harmful. Make sure that your current anti-virus and your entire operating system is always duly updated.

Naturally, downloading pirated software is unlawful and may lead to vital damage to be produced your system. Hence, stay away from downloading cracked software. You are likewise strongly encouraged to reconsider your existing security software and perhaps switch to another security solution that can render far better services of defending your PC.

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

Use GridinSoft Anti-Malware to remove GEROSAN 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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One comment

  1. como recupero mis archivos infectados con gerosan ya que no puedo abrir, muchas gracias por su ayuda

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