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Malicious package

nottuff7npm

Advisory published Updated

nottuff7 is a confirmed malicious npm package (MAL-2026-5918) that opens a backdoor for remote access (malicious versions 1.1.7, 1.7.7, 2.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in nottuff7 (npm)

MAL-2026-5918
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall nottuff7

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
1.1.71.7.72.0.0

Indicators of compromise (SHA-256)

014548171545d3357baafaf1ec9c1755860bacdcf94b42161d8e32b0c94ab3c8
4c560f85796bad830999cf36c1683ca160a67fa4540f3e670742f6e448559560
15a5e98054661d6eea29d8120457ffc7e00d7b516223a5fa6ec91355e9434652
6f93db8cbcb68b034b5e4acd8b8ca623e1b7c4cb89e994474ac830c9f46d75ee

Detection & response playbook

Backdoor / remote access
  1. Find it

    Search your lockfiles and build artifacts for nottuff7 (3 malicious versions).

  2. If you installed it — respond

    nottuff7 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 nottuff7 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. nottuff7 on npm has been identified as a malicious package (versions 1.1.7, 1.7.7, 2.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-006821GHSA-f4m6-gffx-m3mqIN-MAL-2026-010071IN-MAL-2026-010069

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks nottuff7-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.

Explore

nottuff7 (npm) malicious package — MAL-2026-5918 | O3 Security