Another one .

Petya Ransomware Spreading Rapidly Worldwide, Just Like WannaCry "... The Wannacry ransomware is not dead yet and another large scale ransomware attack is making chaos worldwide, shutting down computers at corporates, power supplies and banks across Russia, Ukraine, India, and Europe and demanding demands $300 in bitcoins. Affected Power Companies: Petya ransomware has already infected -- Russian state-owned oil giant Rosneft, Ukrainian state power distributors "Kyivenergo" and "Ukrenergo," in last year hours." Source: HackerNews Petya Ransomware Spreading Rapidly Worldwide, Just Like WannaCry

İ love that crypt tool.

You can recover your PC from Petya. Petya appears on startup like "chkdsk". Before of "chkdsk" screen, you must do that steps: Step 1: Make a Windows boot disk , Step 2: Open your PC via boot disk. Step 3: Format your PC, but don't erase disk. Windows will backup your files in Windows. old folder. Step 4:Enjoy it!