Which versions of metrics-probe-64b2 are malicious?

The following npm versions of metrics-probe-64b2 are flagged malicious: 1.0.0. Treat any of these as compromised.

How do I remediate metrics-probe-64b2 if I installed it?

Remove metrics-probe-64b2 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 metrics-probe-64b2 part of a known attack campaign?

Yes — metrics-probe-64b2 is associated with the IN-MAL-2026-006903 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 metrics-probe-64b2 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 metrics-probe-64b2 and packages like it before any post-install script runs.

Malicious package

metrics-probe-64b2npm

Malicious code in metrics-probe-64b2 (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-5981

Immediate action

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

npm uninstall metrics-probe-64b2

What this malware does

package.json declares a postinstall hook ("postinstall": "node run.js") that executes run.js automatically on every npm install. run.js imports os, fs, http, https, and child_process, reads host identifiers including os.hostname() and os.platform(), reads files from disk via fs.readFileSync, and issues outbound HTTP POST requests carrying that data. The package's stated name ("metrics-probe") with a random hex suffix, combined with an install-time host-fingerprinting beacon and no library functionality, matches the shape of an installer-side reconnaissance / data-exfiltration payload that fires automatically on npm install without any user action.

Malicious versions

1 flagged

1.0.0

Indicators of compromise (SHA-256)

cae901b673ee21724897f69c782eb2808c55c2722bacc9912a4a3e60f7019883

Frequently asked questions

No. metrics-probe-64b2 on npm has been identified as a malicious package (version 1.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-006903

References

npmjs.com

Credits

Amazon Inspector · finder

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