Cisco Talos has identified a commodity BadIIS malware ecosystem operating under a Malware-as-a-Service (MaaS) model, primarily used by Chinese-speaking threat actors for SEO fraud and traffic manipulation. The developer, known as 'lwxat', provides a dedicated builder and sophisticated service-based installers that ensure persistence on compromised Windows IIS servers while evading detection through custom Base64 encoding and service impersonation.
lwxat
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From PDB strings to MaaS: Tracking a commodity BadIIS ecosystem used by Chinese-speaking threat