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Malicious package

ratelimitsucks1npm

Malicious code in ratelimitsucks1 (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-10365
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall ratelimitsucks1

What this malware does

The tarball ships auto-publish.sh, a script that republishes the same payload under ~100 distinct npm names (ishowfeet1-ishowfeet20, nottuff1-nottuff30, abuden*, imillegal*, ratelimitsucks*, etc/) by rewriting package.json.name and running npm publish --silent in a loop — namespace-spam infrastructure shipped inside the package itself. The package's declared main is sw.js, a browser Service Worker (importScripts('./8cfc2/hgshm.js'), self.addEventListener('install'|'activate'|'fetch'|'message')) that throws immediately if loaded from Node. The shipped assets are a heavily obfuscated Ultraviolet/bare-mux web-proxy frontend with an index.html themed as "Riverbend Tutoring" that hides a popunder redirect to https://abdct.com/ on click/keydown/touchstart. package.json declares no preinstall/install/postinstall/prepare hooks, and require('ishowfeet9') from Node fails before any code runs, so a Node installer experiences no auto-execution. The harm is registry abuse (mass-publication of a misleading name family) and a browser-side proxy/popunder served to whoever later loads these static assets — not installer-side compromise. Routing to human review for namespace-abuse adjudication.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Malicious versions

3 flagged
1.1.31.1.72.0.0

Indicators of compromise (SHA-256)

e11c14697d844bca9fdaa293f18765010cbfee1655031931cdc3cc79d81d9a62
2908fa35f3ab37dd9e5b137580117e8be746c328b74934d3a5f04d8ce805149b
ece1738a69b2d4845a51ccb302241277ed25ab778bf9576df1a05b4919479f28
17731f526fc4f951d1344396ed295ce98626b96e0535e44272f51dc826e88a09

Detection & response playbook

Backdoor / remote access
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for ratelimitsucks1 (3 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging ratelimitsucks1 across your stack and pipelines.

  2. If you installed it — respond

    ratelimitsucks1 establishes remote access, so treat any host that installed it as fully compromised. Isolate the machine, remove the package, rotate all credentials it could reach, and rebuild from a trusted image rather than cleaning in place — a backdoor may have planted additional persistence.

  3. Did it already run?

    If ratelimitsucks1 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.

  4. How O3 protects you

    O3 blocks ratelimitsucks1 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. ratelimitsucks1 on npm has been identified as a malicious package (versions 1.1.3, 1.1.7, 2.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GHSA-v9x2-jcqv-x3rmIN-MAL-2026-010166IN-MAL-2026-010168IN-MAL-2026-010169

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks ratelimitsucks1-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.

ratelimitsucks1 (npm) malicious package — MAL-2026-10365 | O3 Security