Which versions of node-calculator-522f are malicious?

The following npm versions of node-calculator-522f are flagged malicious: 2.2.5. Treat any of these as compromised.

How do I remediate node-calculator-522f if I installed it?

Remove node-calculator-522f 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-522f — how do I know if it already compromised me?

If node-calculator-522f 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-522f part of a known attack campaign?

Yes — node-calculator-522f is associated with the RLMA-2025-06410 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-522f across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for node-calculator-522f (version 2.2.5).

Malicious package

node-calculator-522fnpm

Advisory published Nov 17, 2025Updated Dec 24, 2025

node-calculator-522f is a confirmed malicious npm package (MAL-2025-190531) that executes malicious code on install (malicious version 2.2.5). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in node-calculator-522f (npm)

MAL-2025-190531

Immediate action

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

npm uninstall node-calculator-522f

What this malware does

The package node-calculator-522f was found to contain malicious code.

Malicious versions

1 flagged

2.2.5

Indicators of compromise (SHA-256)

1636691ddc6a614686e4c989fab99d59e0f42f9091048a34199e33169dabbead

adb016deca4ed7567775a7fb53a3f355b672122f6f3737ff9dcd6718e6e052fe

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for node-calculator-522f (version 2.2.5).
If you installed it — respond
Remove node-calculator-522f 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-522f 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-522f on npm has been identified as a malicious package (version 2.2.5 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-06410

Credits

Amazon Inspector · finder
ReversingLabs · finder

Detect & block this

O3 blocks node-calculator-522f-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