3AM Ransomware Adopts Email Bombing, Vishing Combo Attack

Researchers tracked 3AM ransomware actors leveraging an email‑bombing followed by vishing (via Microsoft Teams) to trick employees into granting remote access (Quick Assist), deploy a virtual machine hosting a QDoor Trojan, and steal data — the ransomware stage was later blocked but attackers remained on the network for nine days. Sophos documented multiple incidents and attempts using this playbook, linked 3AM to prior ransomware groups, and recommended user awareness, strict remote‑access policies, and application control to mitigate the threat.