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Malicious package

bnpl-blocks-independent-bnpl-preset-containernpm

Advisory published Updated

bnpl-blocks-independent-bnpl-preset-container is a confirmed malicious npm package (MAL-2026-12966) that executes malicious code on install (malicious version 35.3.2). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in bnpl-blocks-independent-bnpl-preset-container (npm)

MAL-2026-12966
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall bnpl-blocks-independent-bnpl-preset-container

What this malware does

index.js unconditionally requires./support on module load. support.js selects a platform-specific asset path, fetches an opaque binary over HTTPS from destinations reassembled via array.join("") string-concatenation obfuscation (Cloudflare Workers subdomains under oob-worker.cf102-baf.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev), with a DNS TXT chunked retrieval fallback against 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 (".cache<rand>", "dotnet_diag<rand>.exe"), chmod 0755, and spawned detached via /bin/sh -c or cmd.exe with a /tmp timestamp marker gating re-execution. Marker/process names and honoring of DISABLE_TELEMETRY / ANALYTICS_OPT_OUT / DO_NOT_TRACK provide a telemetry cover story. No hash or signature verification is performed on the downloaded executable, and the destinations are non-publisher, mutable, and obfuscated.

Malicious versions

1 flagged
35.3.2

Indicators of compromise (SHA-256)

dc9c82b8cf411cb022edae70d6911b9b52637506ce2d1f9556275bbd251cb87a

Detection & response playbook

Malicious package

  1. Find it

    Search your lockfiles and build artifacts for bnpl-blocks-independent-bnpl-preset-container (version 35.3.2).

  2. If you installed it — respond

    Remove bnpl-blocks-independent-bnpl-preset-container 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-preset-container 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-preset-container on npm has been identified as a malicious package (version 35.3.2 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015418

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks bnpl-blocks-independent-bnpl-preset-container-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-independent-bnpl-preset-container (npm) malicious package — MAL-2026-12966 | O3 Security