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Malicious package

npm-rce-pocnpm

Malicious code in npm-rce-poc (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-7019
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall npm-rce-poc

What this malware does

Package declares a postinstall lifecycle script that, on npm install, fetches a script over plain HTTP from a hardcoded bare IP (http://115.190.124.243:8761/slt on Unix,.../swt on Windows) and immediately executes it — piping to sh on Unix and writing to C:\Users\Public\run.bat via certutil then invoking it on Windows. The package presents itself as date-fns-lite, a lookalike of the popular date-fns library, and ships a benign-looking date-formatting index.js as cover; the actual behavior is an install-time dropper that hands remote code execution to the operator of 115.190.124.243 against every installer. No pinning, no integrity check, no TLS.

Malicious versions

1 flagged
1.0.13

Indicators of compromise (SHA-256)

6365312ad1339c7d5539f594b9e472ea3f10401fa356fe49766de887368e87c9

Detection & response playbook

Typosquat
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for npm-rce-poc (version 1.0.13). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging npm-rce-poc across your stack and pipelines.

  2. If you installed it — respond

    npm-rce-poc is a typosquat — you almost certainly intended a legitimately-named package. Remove npm-rce-poc, install the correct package, and rotate any secrets exposed during the install since post-install scripts may have already run.

  3. Did it already run?

    If npm-rce-poc was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.

  4. How O3 protects you

    O3 blocks npm-rce-poc before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.

Frequently asked questions

No. npm-rce-poc on npm has been identified as a malicious package (version 1.0.13 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-008249

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks npm-rce-poc-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

npm-rce-poc (npm) malicious package — MAL-2026-7019 | O3 Security