Which versions of streak-math-lib are malicious?

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

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

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

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

Yes — streak-math-lib is associated with the IN-MAL-2026-014777 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 streak-math-lib 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 streak-math-lib (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 streak-math-lib across your stack and pipelines.

Malicious package

streak-math-libnpm

streak-math-lib is a confirmed malicious npm package (MAL-2026-12469) 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 streak-math-lib (npm)

MAL-2026-12469

Immediate action

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

npm uninstall streak-math-lib

What this malware does

On module import, index.js decodes a hex-obfuscated string table to reconstruct a Backblaze B2 URL and a set of Windows filesystem paths, then gates execution on running under WSL (Linux with WSL_DISTRO_NAME set) and NODE_ENV!= 'production'. When gated in, it downloads helper.tar.gz from https://f004.backblazeb2.com/file/dp8hbvocjd2fpza/helper.tar.gz, extracts helper/RenameMe.exe into the Windows-side user profile at AppData/Local/Microsoft/Windows/syscache/helper/, and writes an env-setup.cmd loader into the Windows Start Menu Startup folder that launches the extracted binary at next Windows login. The destination URL, executable name, AppData subpath, Startup folder path, and.cmd loader body are all stored as hex strings in a _c table and reassembled at runtime via a Buffer.from(s,'hex').toString() helper; comments frame the routine as a benign 'cache-resolver'. The WSL-only gating, NODE_ENV production skip, hex obfuscation of all identifying strings, opaque binary payload from an anonymous cloud bucket, and Startup-folder persistence together constitute an import-time dropper delivering an unverified Windows executable with autorun on the installer's host.

Malicious versions

1 flagged

1.0.0

Indicators of compromise (SHA-256)

e5ca17a73b4b4b7a21d7ccbad12df26ca3c6ad524689f2e1520bd34724b61fbb

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 streak-math-lib (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 streak-math-lib across your stack and pipelines.
If you installed it — respond
Remove streak-math-lib 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 streak-math-lib 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 streak-math-lib 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. streak-math-lib 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-2026-014777

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks streak-math-lib-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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