Lyceum — Threat Actor Profile, Campaigns & Targets

Threat entity extracted from intelligence sources

Frequency
9
occurrences
First Seen
May 13, 2026
Last Seen
July 24, 2026

Related Threat Clusters

Recent Intelligence Reports

  • Hollowgraph Microsoft 365 — www.group-ib.com · July 24, 2026
  • New HollowGraph malware uses Microsoft Graph for stealthy C2 comms — Bleepingcomputer · July 20, 2026
  • Microsoft 365 calendars become spy drop boxes in HOLLOWGRAPH campaign — Theregister · July 20, 2026
  • New HollowGraph Malware Hijacks Microsoft 365 Calendars for Covert C2 Communications — Infosecurity-Magazine · July 20, 2026
  • Active Exploitation Alert: Iranian Cavern Manticore APT Abuses SysAid Supply Chain ... — Rescana · July 7, 2026
  • Oilrigs Outer Space Juicy Mix Same Ol Rig New Drill Pipes — www.welivesecurity.com · July 7, 2026
  • Lyceum — malpedia.caad.fkie.fraunhofer.de · July 7, 2026
  • Iranian hackers use new modular C2 framework against Israeli organizations — Feeds.Feedburner · July 6, 2026

CVSS v3.1 Breakdown