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Malicious package

mechatronics-xenos-fomalhaut-antimatternpm

Advisory published Updated

mechatronics-xenos-fomalhaut-antimatter is a confirmed malicious npm package (MAL-2025-187964) that executes malicious code on install. Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in mechatronics-xenos-fomalhaut-antimatter (npm)

MAL-2025-187964
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall mechatronics-xenos-fomalhaut-antimatter

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)

ecfc4d442ea48f03d59f82d8103e499b19aba52c3c0d7bff202c16e10d0043a6

Detection & response playbook

Malicious package

  1. Find it

    Search your lockfiles and build artifacts for mechatronics-xenos-fomalhaut-antimatter (all published versions).

  2. If you installed it — respond

    Remove mechatronics-xenos-fomalhaut-antimatter 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 mechatronics-xenos-fomalhaut-antimatter 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. mechatronics-xenos-fomalhaut-antimatter 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 mechatronics-xenos-fomalhaut-antimatter-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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mechatronics-xenos-fomalhaut-antimatter (npm) malicious package — MAL-2025-187964 | O3 Security