GreenBlood Ransomware Network Share and Removable Drive Enumeration
Detects GreenBlood ransomware activity targeting network shares and USB drives. This rule identifies file rename or creation events with specific ransomware extensions (.tgbg, .bak) or ransom note filenames ('READ_ME_TO_RECOVER_FILES.txt'), combined with the use of extended path prefixes (\?\ or \?\UNC\) often employed by ransomware for network/UNC path targeting. The rule aggregates these events and alerts if three or more such files are detected from a single process on a device.
Microsoft Sentinel (KQL)
