Which versions of hemi-supply-cron are malicious?

The following npm versions of hemi-supply-cron are flagged malicious: 999.0.0. Treat any of these as compromised.

How do I remediate hemi-supply-cron if I installed it?

Remove hemi-supply-cron from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound network activity or persistence. Use O3 Security's dependency scanner to confirm the package and its artifacts are fully purged across your stack.

Is hemi-supply-cron part of a known attack campaign?

Yes — hemi-supply-cron is associated with the IN-MAL-2026-006486 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

Can O3 Security detect hemi-supply-cron in my codebase?

Yes. O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, blocking hemi-supply-cron and packages like it before any post-install script runs.

Malicious package

hemi-supply-cronnpm

Malicious code in hemi-supply-cron (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-5779

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall hemi-supply-cron

What this malware does

package.json declares a preinstall hook (node postinstall.js) that fires automatically on npm install. The script collects host identity (os.hostname(), os.userInfo().username, process.cwd()) and enumerates process.env, filtering keys against the regex /key|secret|token|pass|private|ssh|deploy|auth|api|rpc|wallet|sentry|docker|graph|slack|host/i to harvest any credential-shaped variables (AWS keys, SSH/deploy tokens, RPC/wallet secrets, API tokens, etc.). The collected JSON payload is HTTPS POSTed to the hardcoded bare IP 185.130.46.35:8443 at path /collect. The package has no library functionality — index.js exports an empty object — and is published at version 999.0.0, the canonical dependency-confusion shape used to override an internal package name with a higher public version. The package's sole purpose is to harvest installer/CI secrets.

Malicious versions

1 flagged

999.0.0

Indicators of compromise (SHA-256)

c41be27601d38eb5c0b527a9ec22b7516734e8eae985a2607ae6d70878f5f1d9

Frequently asked questions

No. hemi-supply-cron on npm has been identified as a malicious package (version 999.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-006486

References

npmjs.com

Credits

Amazon Inspector · finder

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O3 Security blocks malicious packages like this at install time and in CI.

Supply-chain protection