A new strain of the Petya ransomware started propagating on June 27, 2017, infecting many organizations. Similar to WannaCry, Petya uses the Eternal Blue exploit to propagate itself.
Am I protected from the Petya Ransomware?
Symantec Endpoint Protection (SEP) and Norton products proactively protect customers against attempts to spread Petya using Eternal Blue. SONAR behavior detection technology also proactively protects against Petya infections.
Symantec products also detect Petya components as Ransom.Petya.