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Malicious package

test-agency-assignment-01npm

Advisory published Updated

test-agency-assignment-01 is a confirmed malicious npm package (MAL-2026-17296) that executes malicious code on install (malicious version 1.0.5). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in test-agency-assignment-01 (npm)

MAL-2026-17296
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall test-agency-assignment-01

What this malware does

The tarball contains only package.json and an 8.4 MB Go-compiled Windows executable, Kelimasow.exe (sha256 875c7641dc980538f3c3d8b344d173f97cf64a5d97dcf88d8e2932c83b876b92). package.json declares scripts.postinstall = "Kelimasow.exe", so npm install auto-executes this binary on any Windows host. The package has no library code (main points at a nonexistent index.js), no README, no source, no build system, and empty description/author/repository fields, so there is no advertised purpose that would justify shipping an opaque native executable and no way to inspect what the binary does before it runs. Auto-executing a bundled opaque native binary from a package lifecycle hook, with no accompanying source or declared purpose, is the canonical install-time-RCE dropper shape.

Malicious versions

1 flagged
1.0.5

Indicators of compromise (SHA-256)

2098eadf99f0ffe4dc04f478ed085034d30415cb52201be4f36f688298abc46e

Detection & response playbook

Malicious package

  1. Find it

    Search your lockfiles and build artifacts for test-agency-assignment-01 (version 1.0.5).

  2. If you installed it — respond

    Remove test-agency-assignment-01 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 test-agency-assignment-01 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. test-agency-assignment-01 on npm has been identified as a malicious package (version 1.0.5 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-020693

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks test-agency-assignment-01-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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test-agency-assignment-01 (npm) malicious package — MAL-2026-17296 | O3 Security