Which versions of boxy-fixture-paperclip are malicious?

The following npm versions of boxy-fixture-paperclip are flagged malicious: 35.8.2. Treat any of these as compromised.

How do I remediate boxy-fixture-paperclip if I installed it?

Remove boxy-fixture-paperclip 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-fixture-paperclip — how do I know if it already compromised me?

If boxy-fixture-paperclip 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-fixture-paperclip part of a known attack campaign?

Yes — boxy-fixture-paperclip is associated with the IN-MAL-2026-015334 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-fixture-paperclip across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for boxy-fixture-paperclip (version 35.8.2).

Malicious package

boxy-fixture-paperclipnpm

Advisory published Aug 5, 2026Updated Aug 5, 2026

boxy-fixture-paperclip is a confirmed malicious npm package (MAL-2026-13045) that executes malicious code on install (malicious version 35.8.2). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in boxy-fixture-paperclip (npm)

MAL-2026-13045

Immediate action

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

npm uninstall boxy-fixture-paperclip

What this malware does

On any require/import, index.js loads _adapter.js, which selects a platform-specific asset and downloads an opaque binary from a rotating set of Cloudflare Workers hosts (oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf103-070.workers.dev). The hostnames are reassembled at runtime via array-join to defeat static string extraction. The downloaded bytes are written to a hidden dot-file under /var/tmp (POSIX) or %TEMP% (Windows), chmod 0755'd, and executed detached via spawn('/bin/sh', ['-c',...]) or spawn('cmd',...). A DNS-TXT covert channel under sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru provides a fallback that chunk-reassembles a base64 payload from TXT records when the primary hosts are unreachable. The tarball also ships lib/telemetry.js, an ~81 KB parallel dropper module masquerading as a Sentry-like analytics SDK that is not referenced in this version but duplicates the _adapter.js payload-staging shape. Installing or importing this package results in execution of attacker-controlled code on the installer's machine.

Malicious versions

1 flagged

35.8.2

Indicators of compromise (SHA-256)

78a47f722fb30af7936e07182fa5fb42ecfd7efbacadd970a148a8a7daefc8e2

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for boxy-fixture-paperclip (version 35.8.2).
If you installed it — respond
Remove boxy-fixture-paperclip 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-fixture-paperclip 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-fixture-paperclip on npm has been identified as a malicious package (version 35.8.2 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015334

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks boxy-fixture-paperclip-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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