Rhysida Ransom Note Drop Preceding Extortion/Leak Publication
Detects the creation of files on a host system that match naming conventions consistent with Rhysida ransomware notes. These files (e.g., README, HOW_TO_RECOVER) indicate a post-encryption state where the adversary has demanded payment. The detection joins events to highlight multiple occurrences of these note-like files on a single device.
Microsoft Sentinel (KQL)
