China-Nexus Hackers Compromise 350 Systems Across Asia With New Antino Backdoor

2026-10-02

Antino, a new Rust-based Windows backdoor that runs C2 entirely through Microsoft Graph API calls to attacker-controlled Outlook and OneDrive, compromised roughly 350 endpoints across Asia in a China-nexus espionage campaign that Cisco Talos tracks as UAT-11587.