MAL-2026-12509 Malicious code in @shiftmarkets/shift-exchange-root (npm)

On npm install, the package's postinstall hook (scripts.postinstall: 'node dist/recon.js || true') automatically runs dist/recon.js, which collects the installer's hostname, username, SUDO_USER, home directory, current working directory, internal IPv4 addresses for each network interface, DNS domain (via execSync of dnsdomainname), the full sorted list of process.env variable names, CI indicators, and the npm user-agent/cache, and POSTs this JSON payload to http://138.68.108.20:80/cb over cleartext HTTP. The env-var name list is additionally filtered by a credential regex (AWS|GCP|GOOGLE|AZURE|NPM|NODE_AUTH|DOCKER|KUBE|VAULT|TOKEN|SECRET|KEY|PASS|CRED|GITHUB|GITLAB|SSH) and shipped as a separate credential-shaped-name inventory. The destination is a bare IP unaffiliated with the @shiftmarkets scope's publisher, contacted over plain HTTP. The package's main entry (dist/index.js) exports only trivial math helpers (sum/subtract/multiply/divide) that do not match the @shiftmarkets/shift-exchange-root name, and a header comment in the recon script labels the collection as 'NON-SENSITIVE telemetry only… env var NAMES (never values)' — a cover story that contradicts the actual collection of host identity, internal network topology, sudo user, and credential-shaped env key inventory.