https://www.vice.com/en_us/article/88a4da/us-charged-sandworm-gru-russia-most-destructive-hackers

The US government accused six members of Russia's military intelligence of being behind the destructive NotPetya ransomware attack. 

The Department of Justice announced the indictment of six people who are allegedly part of the Sandworm hacking group, responsible for a slew of high-profile hacks in the last few years—"the most disruptive and destructive series of computer attacks ever attributed to a single group,” as the DOJ put it. They are most famous for unleashing NotPetya, a ransomware that wiped thousands of computers all over the world.