GCVE-110-OSM-2026-10115

This package is a downloader/launcher implant consistent with a supply-chain attacker model: on import it runs `require("./_vendor")`, fetches a payload from `oob-worker.cf102-baf.workers.dev` and related Cloudflare Workers domains, writes it to disk, and executes it with hidden detached shell spawning. The code also shows persistence via `.profile`, environment-gated activation, and DNS-based fallback exfil/retrieval in `lib/telemetry.js`, which is far beyond any legitimate reporting runtime support module. The publisher context reinforces intent: `jr1rhvyl4itx` has `publisherMaliciousRatio: 1` and a prior critical package `devplatform-cli-contracts`, so this fits a compromised or malicious publisher delivering a second-stage loader to victims. ENTRY index.js (main: index.js) PERSISTENCE - Startup Persistence in lib/telemetry.js: ".profile" DESTINATION - 2 exfil (custom-c2) (values recorded in verified_iocs) EXFIL - Network Request in _vendor.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 _vendor.js: "spawn("cmd.exe", ["/c", "start", "/b", fp], { detached: true, stdio: "ignore", w..." - Reconstructed Obfuscated Domain in _vendor.js: "oob-worker.cf102-baf.workers.dev" - Shell Command Execution in _vendor.js: "require("child_process")" - Silent Process Execution in _vendor.js: "stdio: "ignore"" - Detached Child Process Payload in _vendor.js: "spawn("cmd.exe", ["/c", "start", "/b", fp], { detached: true" - Shell Command Variable Setup in _vendor.js: ""cmd.exe", ["/c", "start", "/b", fp], { detached: true, stdio: "ignore", windows..." (+2 more) PAYLOAD FILES _vendor.js (+ lib/telemetry.js)