xxdxanpm
Advisory published Updated
xxdxa is a confirmed malicious npm package (MAL-2026-10752) that steals credentials and exfiltrates sensitive data (malicious versions 1.0.1, 1.0.2, 1.0.3…). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in xxdxa (npm)
What this malware does
The package's sole file i.js (declared as main) is a heavily obfuscated IIFE whose top-level exploit() runs unconditionally when the module is loaded. In a browser context on noviembrenacional.com it reads document.documentElement.outerHTML, base64-encodes it, and POSTs it (body 'type=page_html&data=...') to a hardcoded canarytokens.com endpoint (canarytokens.com/images/terms/e63c36xvesfv8udb0yiy1xztu/contact.php), along with status beacons (start, username, no_user_span, no_nonce, exploit_success, error). When the visitor is a logged-in WordPress user on that site whose username is neither 'JuanCuesta' nor 'noviembrenacional', it fetches /my-account/editar-cuenta/, extracts the save-account-details nonce and referer, and submits a same-origin CSRF POST that overwrites the victim's account email to [email protected], then triggers a password reset — an account takeover. For the 'noviembrenacional' admin user it instead POSTs to /members/<user>/settings/delete-account/. In Node (no window), the top-level call throws and the catch handler issues fetch(CANARY_URL + '?type=error&msg=...'), leaking a beacon (including the installer's public IP and an error string) to the attacker's canarytokens URL at require/import time. URLs, DOM property names, form field names, endpoints, and the attacker email are hidden via \uXXXX escapes, reversed-string decoding (e.g. '/srebmem/'.split('').reverse().join('') → '/members/'), and dead-code XOR expressions, existing solely to conceal the exfiltration destination and WordPress attack targets.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for xxdxa (7 malicious versions).
If you installed it — respond
xxdxa is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If xxdxa was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.
Frequently asked questions
Campaign
References
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks xxdxa-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.