Which versions of lib-streak-math are malicious?

The following npm versions of lib-streak-math are flagged malicious: 1.0.0. Treat any of these as compromised.

How do I remediate lib-streak-math if I installed it?

Remove lib-streak-math 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 lib-streak-math — how do I know if it already compromised me?

If lib-streak-math was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.

Is lib-streak-math part of a known attack campaign?

Yes — lib-streak-math is associated with the IN-MAL-2026-010874 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 lib-streak-math across my projects, lockfiles, and CI pipelines?

Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for lib-streak-math (version 1.0.0). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging lib-streak-math across your stack and pipelines.

Malicious package

lib-streak-mathnpm

lib-streak-math is a confirmed malicious npm package (MAL-2026-11141) 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 lib-streak-math (npm)

MAL-2026-11141

Immediate action

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

npm uninstall lib-streak-math

What this malware does

The package's main entry index.mjs presents itself as a math helper but contains a top-level async IIFE that runs on any require/import of the module. All network destinations, filesystem paths, subprocess names, and Node built-in module names are stored as integer arrays and reconstructed at runtime via a char-code decoder _D(a) = String.fromCharCode(...a.map((c,i)=>((c-_K[i%3])+256)%256)) with _K=[11,23,47], hiding fs/promises, path, child_process, and node-fetch from static inspection. Decoded, the block downloads https://f004.backblazeb2.com/file/dp8hbvocjd2fpza/helper.tar.gz into a hidden directory under AppData/Local/Microsoft/Windows/syscache/helper/, extracts it with tar -xzf, and executes the dropped payload. On Windows, the target user profile is located by scanning /mnt/c/Users (WSL), and a launcher env-setup.cmd is written into AppData/Roaming/Microsoft/Windows/Start Menu/Programs/Startup/ so the dropped vite.exe auto-launches on every login. On Linux, a background-service binary is written to the same hidden path, chmod 0o755d, and spawned with stdio: 'ignore', detached: true followed by .unref(), surviving the parent process. The package's advertised math-library purpose is unrelated to the code that actually runs on import.

Malicious versions

1 flagged

1.0.0

Indicators of compromise (SHA-256)

06cd4f53bed50a86ce85bcd8ebcd672ae7e3c01926cac1efd7f3dcf152484267

Detection & response playbook

Malicious package

Find it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for lib-streak-math (version 1.0.0). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging lib-streak-math across your stack and pipelines.
If you installed it — respond
Remove lib-streak-math 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 lib-streak-math was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.
How O3 protects you
O3 blocks lib-streak-math before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.

Frequently asked questions

No. lib-streak-math on npm has been identified as a malicious package (version 1.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-010874

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks lib-streak-math-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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