Medusa RaaS: VPN access to enterprise encryption

A regional healthcare provider is breached through its internet-facing SSL-VPN, and within a shift a Medusa affiliate harvests domain credentials, pivots to the domain controller and backup servers, persists with a rogue remote-management agent hidden among the estate's legitimate ones, steals patient data to cloud storage, and deploys ransomware. Work the VPN authentication records, the endpoint process tree, and the perimeter traffic to reconstruct the intrusion end to end and tell the abuse apart from a heavy baseline of normal remote-management activity.