Early reports are sketchy with ISC & Kaspersky providing some of latest updates
Initial reports indicate this is much like last month’s WannaCry attack.   A global WannaCry-like ransomware outbreak–which began in Russia and Ukraine and spread across Europe–is being reported today. The attack is locking down networks in a number of industries, including energy, transportation, shipping and financial.
Security experts are still trying to determine what type of ransomware is being distributed. Early theories pointed at Petya while others say the ransomware may be a new strain yet to be identified.  Kaspersky Lab malware analyst Vyacheslav Zakorzhevsky said infections were traced to a “new ransomware we haven’t seen before.”
Matt Suiche, founder of cyber security firm Comae Technologies, said he saw evidence of infections through SMB, the same vector used by EternalBlue and the accompanying DoublePulsar rootkit; the vulnerability was patched in March by Microsoft in MS17-010.