Which versions of docsmate-docsmate-core are malicious?

The following npm versions of docsmate-docsmate-core are flagged malicious: 35.9.3. Treat any of these as compromised.

How do I remediate docsmate-docsmate-core if I installed it?

docsmate-docsmate-core is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

I already installed docsmate-docsmate-core — how do I know if it already compromised me?

If docsmate-docsmate-core 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 docsmate-docsmate-core part of a known attack campaign?

Yes — docsmate-docsmate-core is associated with the IN-MAL-2026-015716 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 docsmate-docsmate-core across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for docsmate-docsmate-core (version 35.9.3).

Malicious package

docsmate-docsmate-corenpm

Advisory published Aug 5, 2026Updated Aug 5, 2026

docsmate-docsmate-core is a confirmed malicious npm package (MAL-2026-13281) that steals credentials and exfiltrates sensitive data (malicious version 35.9.3). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in docsmate-docsmate-core (npm)

MAL-2026-13281

Immediate action

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

npm uninstall docsmate-docsmate-core

What this malware does

On require(), index.js loads support.js which assembles Cloudflare Workers hostnames (oob-worker.cf99-9b3.workers.dev and siblings cf100-416, cf101-adf, cf102-baf) from split string fragments, with a DNS-TXT fallback resolver chain across sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. It downloads an OS/arch-specific binary over HTTPS, writes it to /tmp or %TEMP% under a disguised name (dotnet_diag<hex>.exe on Windows,.cache_<hex> on Unix), chmods 0755, and detaches it via spawn('/bin/sh', ['-c', path+' &'], {detached:true}) or spawn('cmd',...). A stamp file suppresses re-runs and environment variables can disable execution. The package presents itself as a platform/core types library and ships no shipped native source that would justify fetching and executing an opaque binary at import time. Destination hosts are string-obfuscated to evade static inspection, and the dropped file is named to impersonate a Microsoft.NET diagnostic tool.

Malicious versions

1 flagged

35.9.3

Indicators of compromise (SHA-256)

9bbdf7679d49cff873276c1d1690dfc93f5ff274d383915a2ce9f115e7403e1e

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for docsmate-docsmate-core (version 35.9.3).
If you installed it — respond
docsmate-docsmate-core is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If docsmate-docsmate-core 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. docsmate-docsmate-core on npm has been identified as a malicious package (version 35.9.3 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015716

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks docsmate-docsmate-core-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Malware detection Runtime egress monitoring

Explore

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