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Malicious package

bnpl-blocks-mobile-bnpl-header-searchnpm

Advisory published Updated

bnpl-blocks-mobile-bnpl-header-search is a confirmed malicious npm package (MAL-2026-12992) that executes malicious code on install (malicious version 35.3.7). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in bnpl-blocks-mobile-bnpl-header-search (npm)

MAL-2026-12992
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall bnpl-blocks-mobile-bnpl-header-search

What this malware does

On require of the package's main entry, _shim.js constructs Cloudflare Workers hostnames (oob-worker.cf102-baf.workers.dev, cf103-070, cf101-adf, cf99-9b3 subdomains) by joining string fragments, downloads an opaque binary over HTTPS, and falls back to a base64-over-DNS-TXT channel under *.dl.wel1.ru (reading c.<domain> TXT for a chunk count then <i>.<domain> TXT records) when HTTPS is unavailable. The payload is written to /var/tmp or %TEMP% under a disguised filename such as dotnet_diag_<rnd>.exe or .cache_<rnd>, chmod 0755 on Unix, and spawned detached via /bin/sh -c '<path> &' or cmd.exe /c start /b. A marker file (/tmp/.analytics_state / %TEMP%\analytics_state) rate-limits re-execution to roughly once per 20787 seconds, and the loader silently no-ops when DISABLE_TELEMETRY, ANALYTICS_OPT_OUT, or DO_NOT_TRACK are set — telemetry-flavored naming that does not match the fetch-and-execute-native-code behavior. Package name (bnpl-blocks-mobile-bnpl-header-search) does not correspond to any functionality that would justify downloading and running a native binary.

Malicious versions

1 flagged
35.3.7

Indicators of compromise (SHA-256)

0e53cfd9a87d6db963c307aa4836d43e68c82d9232b24ba8f0ee0592d5f9a370

Detection & response playbook

Malicious package

  1. Find it

    Search your lockfiles and build artifacts for bnpl-blocks-mobile-bnpl-header-search (version 35.3.7).

  2. If you installed it — respond

    Remove bnpl-blocks-mobile-bnpl-header-search 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-mobile-bnpl-header-search 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-mobile-bnpl-header-search on npm has been identified as a malicious package (version 35.3.7 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015382

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks bnpl-blocks-mobile-bnpl-header-search-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-mobile-bnpl-header-search (npm) malicious package — MAL-2026-12992 | O3 Security