node-calculator-78c0npm
Advisory published Updated
node-calculator-78c0 is a confirmed malicious npm package (MAL-2025-192833) that executes malicious code on install (malicious version 9.0.0). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in node-calculator-78c0 (npm)
What this malware does
The package node-calculator-78c0 was found to contain malicious code.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Search your lockfiles and build artifacts for node-calculator-78c0 (version 9.0.0).
If you installed it — respond
Remove node-calculator-78c0 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-78c0 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
Campaign
Credits
- Amazon Inspector · finder
- ReversingLabs · finder
Detect & block this
O3 blocks node-calculator-78c0-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.