Earth Longzhi
Intelligence Profile
Earth Longzhi is a subgroup of APT41 targeting organizations based in Taiwan, Thailand, the Philippines, and Fiji, and using “stack rumbling” via Image File Execution Options (IFEO), a new denial-of-service (DoS) technique to disable security software.
Threat Analysis
Earth Longzhi is a advanced-sophistication threat actor of undetermined national origin, engaged in cyber operations with a primary motivation of espionage.
The group's espionage-oriented operations suggest a state-sponsored or state-aligned mandate, typically focused on stealing intellectual property, government secrets, or military intelligence. Targets are usually selected for strategic value rather than financial gain.
Classified as an advanced threat actor, Earth Longzhi likely develops or acquires zero-day exploits, employs custom malware toolchains, and demonstrates long-term persistence capabilities — hallmarks of a well-resourced operation consistent with nation-state backing.