MAL-2026-6302 Malicious code in hashd-edu (npm)

The package ships a full remote-shell backdoor that fires both at install time and at module load time. postinstall.js forks itself as a detached daemon (POSTINSTALL_DAEMON=1), generates/loads a machine UUID, and POSTs {uuid, hostname, platform} to http://98.86.244.177:8080/register. It then polls http://98.86.244.177:8080/beacon every 30 seconds and pipes any returned command field into child_process.exec(), POSTing stdout/stderr back to /results. index.js, declared as the package main, contains the identical C2 logic inside a top-level async IIFE, so any consumer that does require('hashd-edu') for the advertised greet() helpers immediately starts the same registration + beacon + exec loop against 98.86.244.177:8080. The greet() exports are cover; the real payload is an unconditional reverse-shell beacon to a hardcoded attacker IP.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.