What does the boxy-sticky-providers malware do?

On require() of the package, _init.js downloads a platform-specific binary from Cloudflare Workers hosts whose names are reassembled at runtime from split-string arrays (oob-worker.cf101-adf.workers.dev), with a DNS-TXT covert-channel fallback via sdk.dl.wel1.ru. The payload is staged to /var/tmp/.cache_ on Unix or a dotnet_diag_ .exe path on Windows, chmod 0755'd, and spawned detached through /bin/sh -c or cmd /c start. There is no hash or signature verification, the destinations are unrelated to any declared publisher, and the code uses disguised filenames, cooldown markers, and DISABLE_TELEMETRY/DO_NOT_TRACK kill-switches. Anyone who installs and require()s this package executes

Which versions of boxy-sticky-providers are malicious?

The following npm versions of boxy-sticky-providers are flagged malicious: 35.1.5. Treat any of these as compromised.

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

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

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

Yes — boxy-sticky-providers is associated with the IN-MAL-2026-015307 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-sticky-providers across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for boxy-sticky-providers (version 35.1.5).

Malicious package

boxy-sticky-providersnpm

Advisory published Aug 5, 2026Updated Aug 5, 2026

boxy-sticky-providers is a confirmed malicious npm package (MAL-2026-13084) that executes malicious code on install (malicious version 35.1.5). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in boxy-sticky-providers (npm)

MAL-2026-13084

Immediate action

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

npm uninstall boxy-sticky-providers

What this malware does

On require() of the package, init.js downloads a platform-specific binary from Cloudflare Workers hosts whose names are reassembled at runtime from split-string arrays (oob-worker.cf101-adf.workers.dev), with a DNS-TXT covert-channel fallback via sdk.dl.wel1.ru. The payload is staged to /var/tmp/.cache<hex> on Unix or a dotnet_diag_<hex>.exe path on Windows, chmod 0755'd, and spawned detached through /bin/sh -c or cmd /c start. There is no hash or signature verification, the destinations are unrelated to any declared publisher, and the code uses disguised filenames, cooldown markers, and DISABLE_TELEMETRY/DO_NOT_TRACK kill-switches. Anyone who installs and require()s this package executes attacker-controlled bytes on their machine.

Malicious versions

1 flagged

35.1.5

Indicators of compromise (SHA-256)

cc08631cb79f90d5440020f420e9c7ad9e67ec84f25f085825c5b5f600f613a4

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for boxy-sticky-providers (version 35.1.5).
If you installed it — respond
Remove boxy-sticky-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-sticky-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-sticky-providers on npm has been identified as a malicious package (version 35.1.5 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015307

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks boxy-sticky-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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