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Malicious package

abuden219npm

Advisory published Updated

abuden219 is a confirmed malicious npm package (MAL-2026-10261) 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 abuden219 (npm)

MAL-2026-10261
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall abuden219

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)

3d92e8effd34bae88fd3378a234a7694f9fa7448e95c1137f6d9c6733837538c
1de0c667d7c3cbfd4c96728443db8ac059d53487498341bd937cf2aaf738574a
92900302b313e32e56d488db3b12c2fa80dc413d2feae53cb68cf0e67b3c1981
d65459b8a76ceacb161d85fa2c868f5ab25d4c5e0a58b0eba7a2baafa11a6dc3

Detection & response playbook

Backdoor / remote access
  1. Find it

    Search your lockfiles and build artifacts for abuden219 (3 malicious versions).

  2. If you installed it — respond

    abuden219 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 abuden219 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. abuden219 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

GHSA-hrfj-hvpm-2jqhIN-MAL-2026-009954IN-MAL-2026-009952IN-MAL-2026-009950

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks abuden219-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

abuden219 (npm) malicious package — MAL-2026-10261 | O3 Security