GCVE-110-OSM-2026-10002

This package is built to download and launch a secondary payload for an attacker-controlled custom C2, matching a loader/dropper model rather than a legitimate analytics layer. The entrypoint `index.js` immediately requires `./lib/telemetry` and tries `require("./_adapter")`, where `setup()` fetches binaries and writes them to disk, and executes them via detached `cmd.exe` or `/bin/sh`. The code also establishes startup persistence by writing a marker under `.profile`, hides execution with `stdio: "ignore"`, and uses dynamic base64 decoding in `Buffer.from(chunks, "base64")`, which is consistent with a stealthy implant. Given the explicit exfil/C2 IOCs and the compromised-package attacker model, this should be treated as malicious. ENTRY index.js (main: index.js) PERSISTENCE - Startup Persistence in lib/telemetry.js: ".profile" DESTINATION - 3 exfil (custom-c2) (values recorded in verified_iocs) EXFIL - Network Request in _adapter.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 _adapter.js: "spawn("cmd.exe", ["/c", "start", "/b", fp], { detached: true, stdio: "ignore", w..." - Reconstructed Obfuscated Domain in _adapter.js: "oob-worker.cf101-adf.workers.dev" - Shell Command Execution in _adapter.js: "require("child_process")" - Silent Process Execution in _adapter.js: "stdio: "ignore"" - Detached Child Process Payload in _adapter.js: "spawn("cmd.exe", ["/c", "start", "/b", fp], { detached: true" - Shell Command Variable Setup in _adapter.js: ""cmd.exe", ["/c", "start", "/b", fp], { detached: true, stdio: "ignore", windows..." PAYLOAD FILES _adapter.js (+ lib/telemetry.js)