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Malicious package

abuden26npm

Advisory published Updated

abuden26 is a confirmed malicious npm package (MAL-2026-10275) 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 abuden26 (npm)

MAL-2026-10275
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall abuden26

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)

c91cef16746823f91e72e3d5db90ab7df443bebd243098185b7b08676242c9da
440fa1b32d35cf2c41253e2fd1f63095ea65ac7733fa48edc9abef43877659c7
b6cfad39b708f9eef300ffa26078fd3f2f33a61d8dda7b3bd81f89c4ade0ff54
d05e268452de4ab38dbf617cd90600b6f0043939c29e293ef0cc434f0af16533

Detection & response playbook

Backdoor / remote access
  1. Find it

    Search your lockfiles and build artifacts for abuden26 (3 malicious versions).

  2. If you installed it — respond

    abuden26 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 abuden26 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. abuden26 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-j7jc-2m38-73r2IN-MAL-2026-009905IN-MAL-2026-009907IN-MAL-2026-009906

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks abuden26-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

abuden26 (npm) malicious package — MAL-2026-10275 | O3 Security