The new ransomware is a variant of Petya and is spread via a fake Flash update. So far, several antivirus companies are claiming that their updated security products protect users from bad rabbit.
According to the US-CERT warning, “US-CERT discourages individuals and organizations from paying the ransom, as this does not guarantee that access will be restored. Using unpatched and unsupported software may increase the risk of proliferation of cybersecurity threats, such as ransomware.”