Which versions of npm-sandbox-research-c5d6 are malicious?

The following npm versions of npm-sandbox-research-c5d6 are flagged malicious: 1.0.0. Treat any of these as compromised.

How do I remediate npm-sandbox-research-c5d6 if I installed it?

Remove npm-sandbox-research-c5d6 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 npm-sandbox-research-c5d6 part of a known attack campaign?

Yes — npm-sandbox-research-c5d6 is associated with the IN-MAL-2026-006464, IN-MAL-2026-006466 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 npm-sandbox-research-c5d6 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 npm-sandbox-research-c5d6 and packages like it before any post-install script runs.

Malicious package

npm-sandbox-research-c5d6npm

Malicious code in npm-sandbox-research-c5d6 (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-5760

Immediate action

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

npm uninstall npm-sandbox-research-c5d6

What this malware does

The package declares a postinstall hook ("postinstall": "node run.js") that executes automatically on npm install. The shipped beacon scripts (beacon11.js, beacon_linux.js) load child_process, os, and http, read host identifiers via os.hostname() and os.platform(), and issue outbound HTTP GET/POST requests carrying that data. This is the install-time host-fingerprinting and exfiltration shape: lifecycle execution + system-info collection + outbound network in a single chain, with no legitimate library functionality justifying the behavior.

Malicious versions

1 flagged

1.0.0

Indicators of compromise (SHA-256)

e7dd3f64f94b15f73c62c5733a5910802ff22adc514e0eb08e153817fcd4158b

f94e3174e59659bc3525db8886120231fe3f85edfce419c48b81f1a6f7f2c998

Frequently asked questions

No. npm-sandbox-research-c5d6 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-2026-006464IN-MAL-2026-006466

References

npmjs.com

Credits

Amazon Inspector · finder

Scan your dependencies

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

Supply-chain protection