Which versions of node-calculator-5b8f are malicious?

The following npm versions of node-calculator-5b8f are flagged malicious: 3.0.0, 3.2.0. Treat any of these as compromised.

How do I remediate node-calculator-5b8f if I installed it?

Remove node-calculator-5b8f 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-5b8f — how do I know if it already compromised me?

If node-calculator-5b8f 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-5b8f part of a known attack campaign?

Yes — node-calculator-5b8f is associated with the RLMA-2025-06411 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-5b8f across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for node-calculator-5b8f (2 malicious versions).

Malicious package

node-calculator-5b8fnpm

Advisory published Dec 23, 2025Updated Jan 2, 2026

node-calculator-5b8f is a confirmed malicious npm package (MAL-2025-192830) that executes malicious code on install (malicious versions 3.0.0, 3.2.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in node-calculator-5b8f (npm)

MAL-2025-192830

Immediate action

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

npm uninstall node-calculator-5b8f

What this malware does

The package node-calculator-5b8f was found to contain malicious code.

Malicious versions

2 flagged

3.0.03.2.0

Indicators of compromise (SHA-256)

dc67a8b71ab4ec95f20ff9e6d7cbf369722772d6ce2870edaeaff038a02e14d7

80dcc57649d2250e10182ed25763f1aae29a0d1f8aa7815c8ecb823d85db1c6c

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for node-calculator-5b8f (2 malicious versions).
If you installed it — respond
Remove node-calculator-5b8f 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-5b8f 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-5b8f on npm has been identified as a malicious package (versions 3.0.0, 3.2.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-06411

Credits

Amazon Inspector · finder
ReversingLabs · finder

Detect & block this

O3 blocks node-calculator-5b8f-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