China-Linked UAT-7290: Telecom Espionage Strikes via Linux Malware and ORB Nodes
In early 2026, a sophisticated China-linked threat actor designated UAT-7290 orchestrated targeted espionage campaigns against telecommunications providers across South Asia and Southeastern Europe. The attackers conducted meticulous intelligence gathering before leveraging one-day vulnerabilities and SSH brute-forcing to compromise exposed edge devices. Malicious payloads—including RushDrop, DriveSwitch, and the advanced SilentRaid—enabled persistent access, covert lateral movement, and deployment of Operational Relay Box (ORB) infrastructure, which can be used by other threat groups. Their arsenal blends open-source tools and bespoke Linux implants, demonstrating mature tradecraft and adaptability. This campaign reflects the increasing frequency and complexity of transnational espionage assaults on critical infrastructure, exploiting modern hybrid networks and advanced malware suites. Organizations in telecom and related sectors face mounting pressure to enhance east-west traffic controls, patch velocity, and incident response capabilities to defend against evolving APT operations.
Kill Chain
