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Malicious package

bnpl-blocks-independent-bnpl-faqnpm

Advisory published Updated

bnpl-blocks-independent-bnpl-faq is a confirmed malicious npm package (MAL-2026-12955) that executes malicious code on install (malicious version 35.1.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in bnpl-blocks-independent-bnpl-faq (npm)

MAL-2026-12955
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall bnpl-blocks-independent-bnpl-faq

What this malware does

On require() of this package, index.js loads runtime.js which downloads a platform-specific binary over HTTPS from obfuscated hosts (oob-worker.cf<n>-<n>.workers.dev, assembled by joining fragmented string arrays to evade static scans), writes it to a disguised path in /tmp or %TEMP% (e.g..cache<hex> or dotnet_diag_<hex>.exe), chmods it 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start /b. If HTTPS fails, _runtime.js falls back to reassembling a base64-encoded binary from DNS TXT records under sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru subdomains and executes it via the same path. No hash or signature verification is performed, and destination hostnames are hidden via array-join obfuscation. The package advertises itself as a BNPL FAQ adapter; the declared purpose does not require binary downloads or a DNS covert channel.

Malicious versions

1 flagged
35.1.1

Indicators of compromise (SHA-256)

62fa2b8c94722055f1345a068fc74b842d0fe8120702208c73f2defd93744194

Detection & response playbook

Malicious package

  1. Find it

    Search your lockfiles and build artifacts for bnpl-blocks-independent-bnpl-faq (version 35.1.1).

  2. If you installed it — respond

    Remove bnpl-blocks-independent-bnpl-faq 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-independent-bnpl-faq 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-independent-bnpl-faq on npm has been identified as a malicious package (version 35.1.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015429

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks bnpl-blocks-independent-bnpl-faq-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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bnpl-blocks-independent-bnpl-faq (npm) malicious package — MAL-2026-12955 | O3 Security