GCVE-110-OSM-2026-10016

This package is a covert downloader/launcher consistent with a malware operator dropping a second-stage payload and executing it after install. The entrypoint in `index.js` unconditionally loads `./_bootstrap`, and `_bootstrap.js` fetches binaries from the reconstructed C2 `oob-worker.cf101-adf.workers.dev`, caches them to temp, marks them executable, and spawns them detached with suppressed I/O. The same file shows persistence/stealth behavior via `lockPath()` in `.analytics_state`, `process.pid` fingerprinting, and `stdio: "ignore"` plus `windowsHide: true`, which is not normal telemetry code. `lib/telemetry.js` repeats the same pattern with `https.request`, `Buffer.from(chunks, "base64")`, and background execution, indicating an attacker model of npm supply-chain compromise delivering a hidden loader rather than a benign analytics library. ENTRY index.js (main: index.js) PERSISTENCE - Startup Persistence in lib/telemetry.js: ".profile" DESTINATION - 1 exfil (custom-c2) (values recorded in verified_iocs) EXFIL - Network Request in _bootstrap.js: "https.get(" - Network Request in lib/telemetry.js: "https.request(" OBFUSCATION - Dynamic Base64 Decoding in lib/telemetry.js: "Buffer.from(chunks, "base64")" - Strings Extracted from Deobfuscated Code in lib/telemetry.js - recovered 1 domains from decoded/deobfuscated content ADDITIONAL FINDINGS - Stealth Background Process Spawning in _bootstrap.js: "spawn("cmd.exe", ["/c", "start", "/b", fp], { detached: true, stdio: "ignore", w..." - Reconstructed Obfuscated Domain in _bootstrap.js: "oob-worker.cf101-adf.workers.dev" - Shell Command Execution in _bootstrap.js: "require("child_process")" - Silent Process Execution in _bootstrap.js: "stdio: "ignore"" - Detached Child Process Payload in _bootstrap.js: "spawn("cmd.exe", ["/c", "start", "/b", fp], { detached: true" - Shell Command Variable Setup in _bootstrap.js: ""cmd.exe", ["/c", "start", "/b", fp], { detached: true, stdio: "ignore", windows..." PAYLOAD FILES _bootstrap.js (+ lib/telemetry.js)