Scattered Spider Hijacks VMware ESXi to Deploy Ransomware on Critical U.S. Infrastructure
Jul 28, 2025
Cyber Attack / Ransomware
The notorious cybercrime group known as Scattered Spider is targeting VMware ESXi hypervisors in attacks targeting retail, airline, and transportation sectors in North America. "The group's core tactics have remained consistent and do not rely on software exploits. Instead, they use a proven playbook centered on phone calls to an IT help desk," Google's Mandiant team said in an extensive analysis. "The actors are aggressive, creative, and particularly skilled at using social engineering to bypass even mature security programs. Their attacks are not opportunistic but are precise, campaign-driven operations aimed at an organization's most critical systems and data." Also called 0ktapus, Muddled Libra, Octo Tempest, and UNC3944, the threat actors have a history of conducting advanced social engineering attacks to obtain initial access to victim environments and then adopting a "living-off-the-land" (LotL) approach by manipulating trusted ad...