Which versions of claims-policies-domain are malicious?

The following npm versions of claims-policies-domain are flagged malicious: 35.3.3. Treat any of these as compromised.

How do I remediate claims-policies-domain if I installed it?

claims-policies-domain is a typosquat — you almost certainly intended a legitimately-named package. Remove claims-policies-domain, install the correct package, and rotate any secrets exposed during the install since post-install scripts may have already run.

I already installed claims-policies-domain — how do I know if it already compromised me?

If claims-policies-domain was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.

Is claims-policies-domain part of a known attack campaign?

Yes — claims-policies-domain is associated with the IN-MAL-2026-015129 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 claims-policies-domain across my projects, lockfiles, and CI pipelines?

Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for claims-policies-domain (version 35.3.3). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging claims-policies-domain across your stack and pipelines.

Malicious package

claims-policies-domainnpm

claims-policies-domain is a confirmed malicious npm package (MAL-2026-12638) that typosquats a legitimate package to trick installs (malicious version 35.3.3). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in claims-policies-domain (npm)

MAL-2026-12638

Immediate action

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

npm uninstall claims-policies-domain

What this malware does

[email protected] executes a binary dropper on module load. index.js requires./platform, which selects a platform-specific path, fetches a binary from one of three hardcoded Cloudflare Workers endpoints (oob-worker.cf102-baf.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf103-070.workers.dev) with a DNS TXT fallback channel under *.dl.wel1.ru, writes the bytes to /var/tmp/.cache<hex> on Unix or %TEMP%\dotnet_diag_<hex>.exe on Windows, chmods the file to 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start /b. No hash or signature verification is performed. Destination hostnames and sensitive API names (child_process, chmodSync, hostname) are assembled at runtime from split string fragments to defeat static analysis (e.g. ["oob-worker.cf102-baf.wo","rkers.","dev"].join(""), require("child_" + "process")). The dropped filename mimics a.NET diagnostic tool on Windows and a hidden dotfile on Unix, and a cooldown marker is written as.analytics_state. The package's advertised purpose as a lightweight claims-policies wrapper does not require fetching or executing a native binary from anonymous worker hosts.

Malicious versions

1 flagged

35.3.3

Indicators of compromise (SHA-256)

5858353e2874492da6b051be8fa2e6061317bc0ac825838f13c6a1b2471c90b5

Detection & response playbook

Typosquat

Find it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for claims-policies-domain (version 35.3.3). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging claims-policies-domain across your stack and pipelines.
If you installed it — respond
claims-policies-domain is a typosquat — you almost certainly intended a legitimately-named package. Remove claims-policies-domain, install the correct package, and rotate any secrets exposed during the install since post-install scripts may have already run.
Did it already run?
If claims-policies-domain was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.
How O3 protects you
O3 blocks claims-policies-domain before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.

Frequently asked questions

No. claims-policies-domain on npm has been identified as a malicious package (version 35.3.3 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015129

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks claims-policies-domain-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

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