https://www.bleepingcomputer.com/news/security/us-indicts-russian-gru-sandworm-hackers-for-notpetya-worldwide-attacks/

The U.S. Department of Justice has charged six Russian intelligence operatives for hacking operations related to the Pyeongchang Winter Olympics, the 2017 French elections, and the notorious NotPetya ransomware attack.

Believed to be part of the elite Russian hacking group known as "Sandworm", the indictment states that all six individuals are part of the Russian Main Intelligence Directorate known as GRU.