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Malicious package

npm-sandbox-ping-c8f2anpm

Malicious code in npm-sandbox-ping-c8f2a (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-5757
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall npm-sandbox-ping-c8f2a

What this malware does

Package declares a postinstall hook ("postinstall": "node run.js" in package.json) that executes on every install. Bundled scripts beacon6.js and beacon_linux.js use require('child_process') to gather host identity (whoami, os.hostname(), os.platform()) and POST the collected data to a remote HTTP endpoint via http.request(...). The package name npm-sandbox-ping-c8f2a and the beacon-style file naming together with no legitimate library functionality indicate the install-time goal is host fingerprinting / callback to an attacker-controlled destination, not any documented purpose. Installing this package automatically transmits installer machine identity off-host.

Malicious versions

1 flagged
1.0.0

Indicators of compromise (SHA-256)

dc3d1f51ae443b062c28e4cf7f1b4203a6c5982e65f78f5dff5adf6c415b0237
f5401a81d56283c310efebfe29af19c3e3fa331667f40adeed71a54627adc877

Frequently asked questions

No. npm-sandbox-ping-c8f2a 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-2026-006469IN-MAL-2026-006468

References

Credits

  • Amazon Inspector · finder

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

Supply-chain protection
npm-sandbox-ping-c8f2a (npm) malicious package — MAL-2026-5757 | O3 Security