Cyber Threat Actor: Ozoir-la-Ferrière Municipality

The threat actor isknown by the alias Ozoir‑la‑Ferrière Municipality and is associated with the town of Ozoir‑la‑Ferrière in France. This alias reflects the name of the local government entity that was publicly identified as the victim in the reported incident. No additional aliases or alternative names have been disclosed in open sources concerning this actor.

Based on the single publicly documented event, the actor’s activity has been observed targeting municipal administrations within the Île‑de‑France region of France. The attack compromised the town hall’s information technology systems and its official Facebook page, and the impact extended to the affiliated community of communes. The consequences included the encryption of data, prolonged disruption of IT services, and operational paralysis that persisted while external specialists conducted an investigation.

The reported tactics, techniques, and procedures involve gaining initial access through a compromised computer and the use of a falsified address to facilitate intrusion. Once inside the network, the actors deployed encryption mechanisms that rendered data inaccessible, although no confirmed exfiltration or leakage of information has been verified. No specific malware families, toolkits, or additional tooling styles have been identified in the available reporting.

Attribution to any state‑sponsored group, criminal consortium, or other affiliation has not been established in public sources, and the actor remains unattributed. The December 9 2023 incident against Ozoir‑la‑Ferrière’s town hall represents the sole publicly referenced operation attributed to this alias, serving as the primary example of their observed activity. Recovery efforts involved engagement with a cybersecurity defense firm, but timelines for full restoration were noted as uncertain at the time of reporting.