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Malicious package

node-calculator-ac24npm

Malicious code in node-calculator-ac24 (npm) Remove it immediately and rotate any exposed credentials.

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
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for node-calculator-ac24 (version 2.1.0). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging node-calculator-ac24 across your stack and pipelines.

  2. 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.

  3. Did it already run?

    If node-calculator-ac24 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 node-calculator-ac24 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. 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.

node-calculator-ac24 (npm) malicious package — MAL-2025-190522 | O3 Security