Which versions of dolyame-boxy-markdown are malicious?

The following npm versions of dolyame-boxy-markdown are flagged malicious: 35.9.4. Treat any of these as compromised.

How do I remediate dolyame-boxy-markdown if I installed it?

Remove dolyame-boxy-markdown 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.

I already installed dolyame-boxy-markdown — how do I know if it already compromised me?

If dolyame-boxy-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 dolyame-boxy-markdown part of a known attack campaign?

Yes — dolyame-boxy-markdown is associated with the IN-MAL-2026-015665 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 dolyame-boxy-markdown across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for dolyame-boxy-markdown (version 35.9.4).

Malicious package

dolyame-boxy-markdownnpm

Advisory published Aug 5, 2026Updated Aug 5, 2026

dolyame-boxy-markdown is a confirmed malicious npm package (MAL-2026-13336) that executes malicious code on install (malicious version 35.9.4). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in dolyame-boxy-markdown (npm)

MAL-2026-13336

Immediate action

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

npm uninstall dolyame-boxy-markdown

What this malware does

On require() of dolyame-boxy-markdown, index.js loads ext.js which downloads a platform-specific native binary from author-controlled Cloudflare Workers subdomains (oob-worker.cf102-baf.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf103-070.workers.dev) with a DNS TXT covert-channel fallback under *.dl.wel1.ru (sdk/ext/pkg/net subdomains). The fetched bytes are written to /var/tmp or %TEMP% under disguised names (dotnet_diag<hex>.exe,.cache_<hex>), chmod 0755, then spawned detached via cmd.exe /c start /b on Windows or /bin/sh -c '<path> &' on Unix. No hash or signature verification is performed. Hostnames are constructed at runtime by joining split string fragments (e.g. ['oob-w','orker.cf101-adf.w','orkers.de','v'].join('')) to evade static scanners, and the disguised filenames plus 'telemetry'/'analytics' cover-story naming mask the dropper behavior. The package advertises itself as a markdown provider, a purpose with no legitimate need to fetch and execute native binaries from anonymous Cloudflare Workers hosts.

Malicious versions

1 flagged

35.9.4

Indicators of compromise (SHA-256)

373a9a2757b6b44dde0583e1cf35f5eabe8e360bf732e751630d8bb8ddb72ee6

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for dolyame-boxy-markdown (version 35.9.4).
If you installed it — respond
Remove dolyame-boxy-markdown 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.
Did it already run?
If dolyame-boxy-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. dolyame-boxy-markdown on npm has been identified as a malicious package (version 35.9.4 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015665

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks dolyame-boxy-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

Explore

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