Prevent Petya ransomware attacks with the CyberGhost Immunizer

Hi there, Ghosties!

You never really know what we’re “cooking” these days at CyberGhost! Could be an update to one of our multi-platform apps or maybe… an Immunizer for desktop Windows devices to help you prevent cyberattacks like the recent Petya.

For those of you not yet in the loop on this topic, ransomware is a type of malware that blocks access to a computer or its data and demands money to release it. Petya is only of the most recent such cyberattacks, of massive proportions, hitting companies in Europe, the Middle East and the US on June 27th, wreaking havoc for employees and customers alike.

Petya caused computers to stop working, instead displaying a ransom note demanding $300 (£235). The widespread attack affected global and national organisations including the Ukranian National Bank, British advertising firm WPP and logistics company Maersk.

How our Immunizer works & how to download it

In plain words, our Immunizer tricks the Petya ransomware into thinking that the computer it is trying to attack is already infected. Thus, if the CyberGhost Immunizer is installed, Petya will think it has previously infested that PC and will move on, unwillingly leaving it safe.

To download our Immunizer and prevent falling victim to Petya attacks in the future, simply go to this link and then click on the .exe file to install it in the blink of an eye.

Is it a bird, is it a plane? No, it's the CyberGhost Immunizer, here to protect you against #petya… Click to Tweet

However, since our tool is brand new, Microsoft currently treats with an understandable level of skepticism. Once more people install it, it will be quickly regarded as trustworthy. That is why some of you may be faced with the message below. Bypass the MS security layer by pressing on “More info” and “Run anyway” buttons:

If we also have Windows XP users among us, please note that the Immunizer also works on this OS, but requires the .net Framework 4.

Stay private, stay secure online with CyberGhost!

About the author

Corina Dobre
Corina Dobre

A professional wordsmith, Corina has improved her writing skills through extensive experiences in journalism, advertising and marketing. Curious by nature, she enjoys learning foreign languages and discovering everything, as well as everyone around her.

30 Comments

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  • I will not download a program that says it prevents this or that from happening unless the method used is described, as it might conflict with other things.

    • Hi Alan, it is free indeed, but not a VPN, just a software aiming to protect you against future Petya ransomware attacks.

  • i aint downloading anything until they sort out why their trying to ding me twice for a annual sub

    • Hi Terry! I understand you have an issue concerning a subscription. Have you tried getting in touch with our Support Team? They will surely assist you on this matter.

    • Hi ChrisM! Thank you for drawing our attention towards this. The article has been updated, right under “How to download”.

  • do i have to open the .exe everytime i start my pc ?
    because there was no installation.
    only the message that Cyberghost has succesfully immunized my system, and Get Cyberghost Pro, but i already have Cygerghost Pro on my pc

    • Hi dinny! No, you don’t need to open the .exe every time you start your PC, once is enough. Cheers and have a nice day!

    • Hi Ken! This might be perhaps you probably already started the software, as that message should appear only after the program has started running.

  • As Techial said…won’t download unless the method of how this is supposed to work is added. Also, looking at some security forum threads, people are saying this app tries to get people to purchase CyberGhost Pro.

    Not a good bit of marketing CyberGhost, nor is saying ‘install this and trust us, though we won’t give you any info on how this works’ what I would expect from a company one would trust with their security needs.

    • Hi there! You are right. The article has been updated with an explanation right after “How to download”. Cheers & have a nice day!

  • Can that ransomware infect my pc without user interaction? Fully updated system and internet security in place … think all alarmbells go off when I try installing this

    • Hi! I think that ransomware by definition will be extra subtle upon entering your PC, no alarm bells will go off, unless your protection is indeed bulletproof. Our Immunizer can protect you against future Petya attacks, as it tricks the ransomware into thinking that it already infested your PC.

  • Hello,

    And if I want to uninstall the immunizer? I do not know where to find the installed file since it does not show any such program was installed on my list of installed programs..

    • Hi there! How to remove the Immunizer, directly from our programmers: “Just delete the .exe, there is no uninstall necessary, because the program doesn’t install anything, apart from the files needed. the files are in the win directory called perfc, perfc.dll & perfc.dat” Hope this helps. Let us know if you need anything else. Cheers and have a good day!

  • What are the steps to remove the immunizer if I wish to remove it from my computer? You give no indication whatsoever as to where the immunizer is actually installed on the PC?!! And it does not show on the installed programs list.

    • Hi there! How to remove the Immunizer, directly from our developers: “Just delete the .exe, there is no uninstall necessary, because the program doesn’t install anything, apart from the files needed. the files are in the win directory called perfc, perfc.dll & perfc.dat” Hope this helps. Let us know if you need anything else. Cheers and have a good day!

  • Can this update be reverse engineered for use by the same attackers? (I.E. Does petya keep a log of all infected computers somewhere? If so, will this block said ping or will my mac adress/ip be stored on some server somewhere to be activated during the next huge DDOS attack? ) How does it trick the ransomware into thinking my PC is already infected? If there is a list of infected computers somewhere why would this prevent petya 2.0?

    • Hi there, Slightly Skeptical (we really love your alias, by the way)! The Immunizer just creates the 3 files, nothing more, nothing less. So it doesn’t register/communicate any IPs and, of course, doesn’t protect you against code changes made by the creators. It’s just a quick „hack“ to prevent users to get infected. If you want a better protection, CyberGhost Premium is always a good idea, especially since we have a 57% discount running now.

    • Hi there! How to remove the Immunizer, directly from our developers: “Just delete the .exe, there is no uninstall necessary, because the program doesn’t install anything, apart from the files needed. the files are in the win directory called perfc, perfc.dll & perfc.dat” Hope this helps. Let us know if you need anything else. Cheers and have a good day!

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