🛡️ MAL-2026-12459 — streak-core-insights
Description
Malicious code in streak-core-insights (npm)
Source: amazon-inspector
The package advertises calendar-day math but on module import runs an obfuscated initializer that gates on Linux + WSL_DISTRO_NAME, then downloads helper.tar.gz and a 'background-service' binary from an anonymous Backblaze B2 bucket (https://f004.backblazeb2.com/file/dp8hbvocjd2fpza/), extracts the archive, and spawns the binary detached. The initializer then enumerates /mnt/c/Users to locate a Windows profile and writes an env-setup.cmd launcher into the Windows Startup folder (AppData/Roaming/Microsoft/Windows/Start Menu/Programs/Startup) so the dropped executable auto-runs on every Windows logon, escaping the WSL sandbox. All identifiers, URLs, filesystem paths, and the.cmd template are stored as String.fromCharCode numeric arrays to defeat static inspection. The fetched binaries are unpinned, unverified, and unrelated to the stated purpose.
Affected software
MAL-2026-12459 is recorded against 1 package.
- streak-core-insights
Timeline and source
Published on 5 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
References
Details
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| streak-core-insights | — | — |
References
More MAL 2026 advisories
Browse all of MAL 2026 in the advisory index.
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