Petya.a Virus

This page aims to help you remove Petya.a Virus for free. Our instructions also cover how any Petya.a Virus file can be recovered.

The current article is focused on a freshly discovered Ransomware infection called Petya.a Virus. The recent news headlines are usually full of warnings about threats of this type, and if you have been this unfortunate to catch this one, on this page, we will do our best to help you remove it. Petya.a Virus is a file-encrypting virus, which is capable of blocking the access to your most used files such as documents, images, videos, projects, work files, archives and more. By doing this, the malware basically makes you vulnerable to the hackers, who stand behind it, when they start to blackmail you into paying ransom in exchange for decrypting your data. All the typical characteristics of this cryptovirus, as well as the general behavioral traits of the Ransomware as a whole, are thoroughly discussed in the paragraphs that follow. Take your time and read them carefully because you are facing one of the most hazardous cyber threats that are currently roaming around the internet and if you want to effectively deal with it, you need to be well informed about your options.

Spreading methods of Petya.a Virus:

The malicious viruses from the Ransomware type most often spread through email spam, infected attachments, fake ads or links, Trojan horse infections or some compromised web pages. To prevent them from sneaking inside your system, do not open messages from strangers or from companies/organizations you do not recognize. You should be especially cautious with messages that show tempting offers, or simply invite you to open a document that looks important (e.g. tax alignment, invoices, summaries, etc.). Some mid-range viruses also attack their victims through unsafe Remote Desktop ports or malware-infected ads. Do not forget to use sophisticated passwords and stay away from sites that look insecure or unclear. It is also very important to protect your computer or your computer network by installing legitimate security software.

Petya.a Virus – a threat created to bring money to its unscrupulous criminal developers!

Petya.a Virus is a malicious program from the Ransomware type, which has been created by a group of anonymous hackers, with the sole idea to bring them money by blackmailing the online users for the access of their own data! This threat usually applies an encryption to each and every file that is found on the infected computer and even is able to change the extensions, in order to make it impossible for any program to recognize and open the encrypted files. The malware modifies these files by altering their structure using a specific encryption algorithm that uses a public key, and once encryption is complete, the files can only be recovered using a private key. That private key is kept by the hackers, who control the Ransomware, and they put a ransom notification on the victim’s desktop, where they ask ащк money to send it. In order to look more trustworthy, sometimes the hackers may offer a “free decryption” option. However, this does not mean that they really will offer some great decrypting solution for a few lucky ones – they simply may offer the testing of the private decrypting key by enabling decryption of one or two files of your choice, which are usually no more than 1 MB in size. If the victims don’t complete the ransom payment fast, the hackers usually threaten to destroy the private key and leave the affected files encrypted forever.

The file decryption options:

If you don’t want to pay ransom to a group of cyber criminals just to get access to what is rightfully yours, then you are probably looking for alternative solutions. Indeed, we need to warn you that there is very little chance of restoring your files, because once Petya.a Virus enters the system, a number of processes begin, one of which is designed to delete the Volume Shadow copies. With this in mind, even the decryption key that the hackers offer you may fail to bring your files back to normal and if you go for the ransom payment the chance is you will give your money in vain.

Then what options do you have? The best way to recover your files is by using file backups. Unfortunately, not many users feel the need to create backups and realize the importance of such data copies when it is too late. If your files have been encrypted by Petya.a Virus but you have some backups, don’t hesitate to use them instead of paying the ransom. Also, we have a special file-restoration section at the end of this page, which you may like to try to retrieve some of your files. However, before you begin with your restoration attempts, we highly recommend you first to remove the Ransomware infection from your system. The instructions for that are published in the removal guide below. If you don’t do that, there is a high risk that everything you manage to recover to get encrypted again and then you may lose even your backups.


Name Petya.a
Type Ransomware
Detection Tool

Petya.a Virus Removal

Search Marquis is a high-profile hijacker – you might want to see if you’re not infected with it as well.

You can find the removal guide here.


About the author


Lidia Howler

Lidia is a web content creator with years of experience in the cyber-security sector. She helps readers with articles on malware removal and online security. Her strive for simplicity and well-researched information provides users with easy-to-follow It-related tips and step-by-step tutorials.


  • The guide here is one of the only method so far. If your machine has been infected by this virus, there aren’t really that many options to choose from. On the flip side, giving it a try can potentially resolve the issue but you cannot know unless you try. It realy depends on the current situation.

  • So once the system is infected, there is no way of recovering the files? All the files which are encrypted, no solution to decrypt?

    • You can always try our guide below the article. We cannot guarantee success but it might still work for you if you are lucky. Nonetheless, giving it a try is still better than doing nothing or, alternatively, paying the ransom.

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