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Scattered Spider Hijacks VMware ESXi to Deploy Ransomware on Critical U.S. Infrastructure

Posted on July 28, 2025 by Dissent

Ravie Lakshmanan reports:

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 administrative systems and leveraging their control of Active Directory to pivot to the VMware vSphere environment.

Read more at The Hacker News.


Related:

  • Scattered Spider is running a VMware ESXi hacking spree
  • UK police arrest four in connection with M&S, Co-op and Harrods cyberattacks (1)
  • Private Industry Notification: Silent Ransom Group Targeting Law Firms
  • Defending Against UNC3944: Cybercrime Hardening Guidance from the Frontlines
  • How the FBI Tracked, and Froze, Millions Sent to Criminals in Massive Caesars Casino Hack
  • Microsoft links Scattered Spider hackers to Qilin and RansomHub ransomware attacks
Category: Commentaries and Analyses

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