Create a single file to protect yourself from the latest ransomware attack [View all]

Last edited Wed Jun 28, 2017, 10:47 AM - Edit history (1)

http://www.zdnet.com/article/create-a-single-file-to-protect-yourself-from-latest-ransomware-attack/

QUOTE

In order to enable the preventative measure, an extensionless file called perfc needs to be created in the C:Windows folder and made read-only.

The first step is to enable Windows extensions. The C:\Windows folder should then be opened, and a separate tab should open the Notepad application. Create a file called perfc, press enter, and make sure there is no extension added. Now the file has been created, right-click the file and select Properties, and check "Read-only." Copy this file to the Windows folder.

You should now have the file in the correct place to display C:Windows\perfc.

Other researchers later confirmed the discovery, although some noted that creating a perfc.dat file as well is likely to help.

UNQUOTE

or go here for a thorough walk-through: https://www.bleepingcomputer.com/news/security/vaccine-not-killswitch-found-for-petya-notpetya-ransomware-outbreak/