https://www.bleepingcomputer.com/news/security/ryuk-ransomware-now-self-spreads-to-other-windows-lan-devices/

A new Ryuk ransomware variant with worm-like capabilities that allow it to spread to other devices on victims' local networks has been discovered by the French national cyber-security agency while investigating an attack in early 2021.

"Through the use of scheduled tasks, the malware propagates itself - machine to machine - within the Windows domain," ANSSI (short for Agence Nationale de la Sécurité des Systèmes d'Information) said in a report published today.