Which versions of node-calculator-8f0c are malicious?

The following npm versions of node-calculator-8f0c are flagged malicious: 4.0.0. Treat any of these as compromised.

How do I remediate node-calculator-8f0c if I installed it?

Remove node-calculator-8f0c 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 activity or persistence.

I already installed node-calculator-8f0c — how do I know if it already compromised me?

If node-calculator-8f0c was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Is node-calculator-8f0c part of a known attack campaign?

Yes — node-calculator-8f0c is associated with the RLMA-2025-06417 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find node-calculator-8f0c across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for node-calculator-8f0c (version 4.0.0).

Malicious package

node-calculator-8f0cnpm

Advisory published Dec 23, 2025Updated Jan 2, 2026

node-calculator-8f0c is a confirmed malicious npm package (MAL-2025-192835) that executes malicious code on install (malicious version 4.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in node-calculator-8f0c (npm)

MAL-2025-192835

Immediate action

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

npm uninstall node-calculator-8f0c

What this malware does

The package node-calculator-8f0c was found to contain malicious code.

Malicious versions

1 flagged

4.0.0

Indicators of compromise (SHA-256)

aa4d7d10469d60c911f94d4ba50c00d885d81f96acd0b728f23c9edf6d21fa70

facd0f8624c7b280965e202a8be81caec665e04abce5b1bae85b7bec2bf33220

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for node-calculator-8f0c (version 4.0.0).
If you installed it — respond
Remove node-calculator-8f0c 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 activity or persistence.
Did it already run?
If node-calculator-8f0c was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. node-calculator-8f0c on npm has been identified as a malicious package (version 4.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-06417

Credits

Amazon Inspector · finder
ReversingLabs · finder

Detect & block this

O3 blocks node-calculator-8f0c-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.

Malware detection Runtime egress monitoring

Explore

All malware advisories How O3 detects malware Vulnerability database