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Malicious package

bnpl-blocks-component-story-namenpm

Advisory published Updated

bnpl-blocks-component-story-name is a confirmed malicious npm package (MAL-2026-12907) that executes malicious code on install (malicious version 35.2.7). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in bnpl-blocks-component-story-name (npm)

MAL-2026-12907
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall bnpl-blocks-component-story-name

What this malware does

On require of this package, index.js loads polyfill.js which downloads a platform-specific executable from one of four hardcoded Cloudflare Workers hosts (oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev), with a DNS-TXT covert-channel fallback that reassembles base64 payload chunks from numeric subdomains of sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. The fetched bytes are written to /var/tmp or %TEMP% under disguised names (dotnet_diag.exe,.cache_), chmod 0755, and spawned detached via /bin/sh -c or cmd.exe /c start /b. Destination hostnames are assembled at runtime by joining split string fragments to evade static string scanners. Requiring the package yields arbitrary remote code execution on the installer's host.

Malicious versions

1 flagged
35.2.7

Indicators of compromise (SHA-256)

a797e2310dd4df10e11e104dad3fbb135621e9997a5425f480c3c884da59ca6d

Detection & response playbook

Malicious package

  1. Find it

    Search your lockfiles and build artifacts for bnpl-blocks-component-story-name (version 35.2.7).

  2. If you installed it — respond

    Remove bnpl-blocks-component-story-name 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 bnpl-blocks-component-story-name 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. bnpl-blocks-component-story-name on npm has been identified as a malicious package (version 35.2.7 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015476

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks bnpl-blocks-component-story-name-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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bnpl-blocks-component-story-name (npm) malicious package — MAL-2026-12907 | O3 Security