UAT-5918, an info-stealing threat actor, targets Taiwan using web shells and open-source tools for persistence, info theft, and credential harvesting.The group exploits N-day vulnerabilities in unpatched servers for long-term access and conducts post-compromise activities manually.APT UAT-5918 deploys web shells, creates admin accounts, and uses tools like Mimikatz and Impacket for lateral movement and credential theft.Talos researchers link UAT-5918 to Chinese APT groups based on TTP overlaps and shared tooling and tactics.