Which versions of boxy-tree-providers are malicious?

The following npm versions of boxy-tree-providers are flagged malicious: 35.3.9. Treat any of these as compromised.

How do I remediate boxy-tree-providers if I installed it?

Remove boxy-tree-providers 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 boxy-tree-providers — how do I know if it already compromised me?

If boxy-tree-providers 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 boxy-tree-providers part of a known attack campaign?

Yes — boxy-tree-providers is associated with the IN-MAL-2026-015289 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 boxy-tree-providers across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for boxy-tree-providers (version 35.3.9).

Malicious package

boxy-tree-providersnpm

Advisory published Aug 5, 2026Updated Aug 5, 2026

boxy-tree-providers is a confirmed malicious npm package (MAL-2026-13093) that executes malicious code on install (malicious version 35.3.9). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in boxy-tree-providers (npm)

MAL-2026-13093

Immediate action

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

npm uninstall boxy-tree-providers

What this malware does

On any require()/import of the package, index.js loads ext.js which reconstructs four Cloudflare Workers destinations (oob-worker.cf*.workers.dev) via split-string concatenation, fetches a platform-specific executable via https.get, writes it to /tmp or %TEMP% under masquerade names such as dotnet_diag.exe and.cache_, chmods it 0755, and spawns it detached via spawn('/bin/sh',...) or spawn('cmd',...). If HTTPS retrieval fails, a DNS-TXT loader (loadViaDns) reassembles a base64-encoded payload from TXT records under sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. No integrity or signature check is performed. lib/telemetry.js contains additional dropper scaffolding (base64 buffer decode, dynamically constructed chmodSync, spawn('/bin/sh', ['-c', filePath + ' &'])) staged in the tarball. Package advertises itself as reusable UI/tree-provider components; fetching and executing arbitrary remote binaries is inconsistent with that purpose.

Malicious versions

1 flagged

35.3.9

Indicators of compromise (SHA-256)

98d9e378c994473ce3e3be434420e616cf1f9f4cf4c71c2b61091a2dffe34ca5

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for boxy-tree-providers (version 35.3.9).
If you installed it — respond
Remove boxy-tree-providers 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 boxy-tree-providers 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. boxy-tree-providers on npm has been identified as a malicious package (version 35.3.9 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015289

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks boxy-tree-providers-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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