math-helpers-extra-utilsnpm
Advisory published Updated
math-helpers-extra-utils is a confirmed malicious npm package (MAL-2026-19225) that steals credentials and exfiltrates sensitive data (malicious versions 1.0.0, 1.0.1). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in math-helpers-extra-utils (npm)
What this malware does
[email protected] is advertised as 'Extra math helper utilities' and ships an empty index.js, but also includes thunderboltRegistry.js which registers factories under Wix-internal registry names (thunderboltRegistry, siteAssetsRegistry, editorRegistry, corvidRegistry, dataBindingRegistry, thunderboltBuilderRegistry, thunderboltPreviewRegistry) and a manifest referencing https://static.parastorage.com/unpkg/[email protected]/. When loaded via Wix's dynamic registry loader, a top-level IIFE in thunderboltRegistry.js executes child_process.execSync for id, hostname, and uname -a, collects platform, pid, and Node version, and issues a GET with those fields to the hardcoded third-party collector https://webhook.site/0492a36c-4d7b-408a-865c-226db25987ba. The declared package name is unrelated to Wix thunderbolt, and the registry-name hijack is the mechanism by which the exfiltration payload is reached — a dependency-confusion shape targeting Wix's internal build pipeline, with host reconnaissance of the building environment sent off-host.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for math-helpers-extra-utils (2 malicious versions).
If you installed it — respond
math-helpers-extra-utils 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 math-helpers-extra-utils 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 math-helpers-extra-utils-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.