DeadLock Ransomware Mass .dlock Rename with Ransom-Note or Wallpaper Signal
Detects potential DeadLock ransomware activity by correlating a high volume of file renames (using the .dlock extension) within a short window, alongside the creation of known ransomware notes (HOW_RECOVER*.txt or RECOVERY_CHAT*.html) or the modification of the desktop wallpaper registry key to point to a file in C:\ProgramData.
Microsoft Sentinel (KQL)
