Ink Dragon exploits IIS to build stealthy relays worldwide
🔍 Check Point reports a Chinese-linked group known as Ink Dragon is exploiting misconfigured IIS servers to assemble a stealthy global relay network. Attackers compromise web-facing IIS instances, harvest local credentials, move laterally via RDP, and install a custom IIS module that forwards commands and data between victims to hide C2 origins. Targets include government networks in Southeast Asia, South America and Europe; communications are concealed inside ordinary mailbox drafts. Mitigations include auditing IIS modules against a known baseline, enabling advanced IIS logging, hardening view state settings, and deploying a web application firewall (WAF).
