Vectra Detection and Response to WannaCry Ransomware by Vectra AI Security Research team

In May 2017 the WannaCry ransomware outbreak leveraged the EternalBlue/MS17-010 exploit (leaked from the NSA) to rapidly infect an estimated 200,000+ systems across 150 countries and was attributed to the Lazarus Group; Vectra analyzes the attack’s core ransomware behaviors—reconnaissance, lateral movement, scanning, automated replication, file encryption and TOR-based C2—recommends behavior-focused detections, and outlines response actions such as quarantining hosts, reimaging, and restoring from offline backups.