Lilu (also known as Lilocked) is a relatively new ransomware that is specifically targeting Linux servers. The ransomware has been infecting systems since mid-July and has so far attacked at least 6700 systems. Lilu targets specific file types (like HTML, PHP, and image files) and alters their file extension to ".lilocked." The ransomware also leaves a note instructing affected users to access an Onion site and pay either 0.03 BTC or US $325 to decrypt file affected files.
https://www.notebookcheck.net/Lilu-Lilocked-ransomware-has-now-infected-thousands-of-Linux-servers.434547.0.html