Which versions of node-calculator-ac24 are malicious?

The following npm versions of node-calculator-ac24 are flagged malicious: 2.1.0. Treat any of these as compromised.

How do I remediate node-calculator-ac24 if I installed it?

node-calculator-ac24 establishes remote access, so treat any host that installed it as fully compromised. Isolate the machine, remove the package, rotate all credentials it could reach, and rebuild from a trusted image rather than cleaning in place — a backdoor may have planted additional persistence.

I already installed node-calculator-ac24 — how do I know if it already compromised me?

If node-calculator-ac24 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.

How do I find node-calculator-ac24 across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for node-calculator-ac24 (version 2.1.0).

Malicious package

node-calculator-ac24npm

Advisory published Nov 17, 2025Updated Nov 17, 2025

node-calculator-ac24 is a confirmed malicious npm package (MAL-2025-190522) that opens a backdoor for remote access (malicious version 2.1.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in node-calculator-ac24 (npm)

MAL-2025-190522

Immediate action

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

npm uninstall node-calculator-ac24

What this malware does

The package node-calculator-ac24 was found to contain malicious code.

The OpenSSF Package Analysis project identified 'node-calculator-ac24' @ 2.1.0 (npm) as malicious.

It is considered malicious because:

The package communicates with a domain associated with malicious activity.

Malicious versions

1 flagged

2.1.0

Indicators of compromise (SHA-256)

64501d10305693b364163d31121c0817b3a81db6bab951ed461411213c013b1c

0d8918452cf7ce73c18c2a4f90264358ac5db009921c8418680cac74f0ff9a04

Detection & response playbook

Backdoor / remote access

Find it
Search your lockfiles and build artifacts for node-calculator-ac24 (version 2.1.0).
If you installed it — respond
node-calculator-ac24 establishes remote access, so treat any host that installed it as fully compromised. Isolate the machine, remove the package, rotate all credentials it could reach, and rebuild from a trusted image rather than cleaning in place — a backdoor may have planted additional persistence.
Did it already run?
If node-calculator-ac24 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-ac24 on npm has been identified as a malicious package (version 2.1.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Credits

Amazon Inspector · finder
OpenSSF: Package Analysis · finder

Detect & block this

O3 blocks node-calculator-ac24-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.

Malware detection Runtime egress monitoring

Explore

All malware advisories How O3 detects malware Vulnerability database