FamousSparrow APT's Persistent Attacks on Azerbaijani Energy Infrastructure
Between late December 2025 and late February 2026, a Chinese-affiliated threat actor known as FamousSparrow conducted a multi-wave intrusion targeting an Azerbaijani oil and gas company. The attackers exploited vulnerabilities in Microsoft Exchange servers to gain initial access, deploying sophisticated backdoors such as Deed RAT and Terndoor. Despite multiple remediation efforts, the adversaries persistently re-exploited the same entry points, indicating a high level of determination and technical capability. This campaign underscores the evolving threat landscape where state-sponsored actors are increasingly targeting critical energy infrastructure in geopolitically sensitive regions. The incident highlights the necessity for organizations to implement comprehensive patch management, continuous monitoring, and robust incident response strategies to mitigate such persistent and sophisticated cyber threats.
Kill Chain
