Qilin Revisited: Diving into the techniques and procedures of the recent Qilin Ransomware Attacks

This report provides a technical analysis of the Qilin ransomware (formerly Agenda), detailing how operators gain initial access (Fortinet/Veeam exploits and VPN brute force), escalate privileges (embedded Mimikatz), move laterally (RDP, PsExec, vCenter), evade detection (clearing event logs, stopping services), and encrypt data using AES-256 CTR or ChaCha20 with RSA-4096-encrypted keys; it also documents destructive actions against backups and recovery mechanisms and lists extensive command-line options and configuration-based behavior.