The npm package dwsai-dwsai-core version 35.8.4 contains malicious code that downloads and executes a platform-specific binary from author-controlled Cloudflare Workers mirrors. The binary masquerades as a Microsoft dotnet diagnostic tool and is executed in a detached manner without verification. The package uses obfuscated runtime assembly of mirror hostnames and a DNS-TXT record covert channel to bypass HTTPS egress filtering. Execution is conditionally gated behind environment variables framed as telemetry opt-out, but the behavior is inconsistent with legitimate telemetry.