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Malicious package

nodemon-meissa-outercore-hyperionnpm

Advisory published Updated

nodemon-meissa-outercore-hyperion is a confirmed malicious npm package (MAL-2025-188335) that executes malicious code on install. Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in nodemon-meissa-outercore-hyperion (npm)

MAL-2025-188335
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall nodemon-meissa-outercore-hyperion

What this malware does

This package appears to be part of the tea.xyz token reward campaign that flooded npm. These packages typically contain autopublish scripts (auto.js, autopublish.js, autopublish2.js, autopublish3.js) designed to automatically generate and publish derivative packages with randomized names to inflate developer reputation scores for tea protocol token rewards. The malicious payload modifies package.json to remove private flags, changes version numbers, generates random Indonesian-themed package names (some variants are also in English), and continuously republishes variants to pollute the npm registry.

Malicious versions

all versions

Every published version of this package is considered malicious — remove it entirely.

Indicators of compromise (SHA-256)

ba2e23c45539583f659e07b8c25c6f64355c7809af168ed58fe5b4b1e9e94297

Detection & response playbook

Malicious package

  1. Find it

    Search your lockfiles and build artifacts for nodemon-meissa-outercore-hyperion (all published versions).

  2. If you installed it — respond

    Remove nodemon-meissa-outercore-hyperion 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.

  3. Did it already run?

    If nodemon-meissa-outercore-hyperion 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. nodemon-meissa-outercore-hyperion on npm has been identified as a malicious package (all published versions flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks nodemon-meissa-outercore-hyperion-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

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nodemon-meissa-outercore-hyperion (npm) malicious package — MAL-2025-188335 | O3 Security