How to stop Petya A virus (encrypt and remove)

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Yesterday Petya A virus makes a disaster what only can be compared with WonnaCry ransomware. For the last 24h Petya virus gets more than 10 thousand dollars for the victims, but there is no confirmation that those who pay to get their files back. We highly not recommend you to pay anything to cybercriminal because there is no guarantee that you will restore anything from your PC.

Petya A
Petya A

The good news is that there is a kill switch for Petya A ransomware. To stop the virus you need to create the file:
C:\Windows\perfc
perfc shot be without extension
Petya A ransomware
Another lifehack what you can use to stop Petya ransomware: if you notice that your PC restart and “Checking disk process” you should immediately turn off your computer and your files won’t be encrypted. Load from LiveCD or USB-disk will give you access to your files.

Petya A ransomware removal guide


STEP 1. Remove Petya A traces from the system

First of all, Petya A is a ransomware what can save its files deep on your computer. That’s why you need to be sure that you remove the virus completely. We recommend you to scan your whole system and remove remaining threats from your computer. To do this you should download and install GridinSoft Anti-Malware from the button below (here or from the product page):

  1. Go back to the GridinSoft Anti-Malware main screen and choose the scan type:
  2. Choose "Full Scan"
    GridinSoft Anti-Malware Scan Types
  3. Scan your computer system:
  4. Please wait until the scan completed
    Anti-Malware Scan Process
  5. After the scan is completed, you will see if there is any adware on your PC. Remove the detected items by clicking on the “Apply” button:
  6. Move detected items to quarantine
    GridinSoft Anti-Malware Scan Results
  7. Finally, this window is a proof of your system’s absolutely cleanness. You removed Petya A!
  8. GridinSoft Anti-Malware Removal Process
    Removal process completed. Your system is clean!

Video guide on how to remove Petya A from the system:

STEP 2.How to prevent your PC from being reinfected with Petya A in the future.

GridinSoft Anti-Malware offers excellent solution which may help to prevent your system from being contaminated with malware ahead of time. This feature is referred to as “On-Run Protection”. By default, it is disabled once you install the software. To enable it, please click on “Protect” button and press “Start” as demonstrated below:

The useful and interesting function may allow people to prevent install of malicious software. This awsome tool can protect you from any unwanted guests on your computer. If any Petya A virus appear on your PC in the future On-Run protection will block it before the encryption process begins. NOTE! If users want to allow the dangerous program to be installed, they may choose “Ignore this file” button. In case, if you want to terminate malicious program, you must select “Confirm”.

On-Run Protection from malware
GridinSoft On-Run Protection
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