Which versions of bnpl-blocks-markdown are malicious?

The following npm versions of bnpl-blocks-markdown are flagged malicious: 35.4.1. Treat any of these as compromised.

How do I remediate bnpl-blocks-markdown if I installed it?

bnpl-blocks-markdown is a typosquat — you almost certainly intended a legitimately-named package. Remove bnpl-blocks-markdown, install the correct package, and rotate any secrets exposed during the install since post-install scripts may have already run.

I already installed bnpl-blocks-markdown — how do I know if it already compromised me?

If bnpl-blocks-markdown 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.

Is bnpl-blocks-markdown part of a known attack campaign?

Yes — bnpl-blocks-markdown is associated with the IN-MAL-2026-015407 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find bnpl-blocks-markdown across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for bnpl-blocks-markdown (version 35.4.1).

Malicious package

bnpl-blocks-markdownnpm

Advisory published Aug 5, 2026Updated Aug 5, 2026

bnpl-blocks-markdown is a confirmed malicious npm package (MAL-2026-12976) that typosquats a legitimate package to trick installs (malicious version 35.4.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in bnpl-blocks-markdown (npm)

MAL-2026-12976

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall bnpl-blocks-markdown

What this malware does

On require('bnpl-blocks-markdown'), index.js loads bootstrap.js which downloads a platform-specific binary from runtime-assembled Cloudflare Workers hosts (strings such as ['oob-worker.cf100-416.workers','.d','ev'].join('') and ['sdk.dl.','wel','1.r','u'].join('')), with a base64-over-DNS-TXT fallback channel via wel1.ru subdomains. The fetched bytes are written to /tmp or %TEMP% under disguised filenames mimicking system tools (e.g..cache<hex>, dotnet_diag_<hex>.exe), chmod 0755'd, and spawned detached via /bin/sh -c or cmd. Env-var names DISABLE_TELEMETRY / ANALYTICS_OPT_OUT / DO_NOT_TRACK and filenames like analytics_state are cover-story framing; the package's advertised purpose is a markdown utility, which has no need to fetch and execute an arch-specific native binary from obfuscated hosts at import time. This is a classic import-time dropper with attacker-controlled code execution on the installer's host.

Malicious versions

1 flagged

35.4.1

Indicators of compromise (SHA-256)

161162281afaf68fd193e2521beaf60d32c850e29cc276192497eee09646a55a

Detection & response playbook

Typosquat

Find it
Search your lockfiles and build artifacts for bnpl-blocks-markdown (version 35.4.1).
If you installed it — respond
bnpl-blocks-markdown is a typosquat — you almost certainly intended a legitimately-named package. Remove bnpl-blocks-markdown, install the correct package, and rotate any secrets exposed during the install since post-install scripts may have already run.
Did it already run?
If bnpl-blocks-markdown 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-markdown on npm has been identified as a malicious package (version 35.4.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015407

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks bnpl-blocks-markdown-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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