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Malicious package

ded-aa-liza-ded-aa-liza-corenpm

Advisory published Updated

ded-aa-liza-ded-aa-liza-core is a confirmed malicious npm package (MAL-2026-13124) that typosquats a legitimate package to trick installs (malicious version 35.2.5). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in ded-aa-liza-ded-aa-liza-core (npm)

MAL-2026-13124
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall ded-aa-liza-ded-aa-liza-core

What this malware does

On require() of ded-aa-liza-ded-aa-liza-core, index.js loads ext.js which downloads a platform-specific binary from hardcoded Cloudflare Workers endpoints (oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev) with a DNS TXT fallback channel to sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru. Destination hostnames are assembled at runtime by joining fragmented substring arrays (e.g. ["oob-wor","ker.cf103-070.workers.de","v"].join("")) rather than appearing as plain literals. The fetched payload is written to /var/tmp or %TEMP% under names disguised to mimic diagnostic tools (.cache<hex>, dotnet_diag_<hex>.exe), made executable via fs.chmodSync(0o755), and spawned detached through /bin/sh -c or cmd. The package is advertised as foundational type definitions but performs no such function; the only import-time effect is dropping and executing an opaque remote binary on the installer's host.

Malicious versions

1 flagged
35.2.5

Indicators of compromise (SHA-256)

074f0a8014fabe8bdb281c1c07180290bcff2b10d67d723f1c7917ea198d5c5a

Detection & response playbook

Typosquat
  1. Find it

    Search your lockfiles and build artifacts for ded-aa-liza-ded-aa-liza-core (version 35.2.5).

  2. If you installed it — respond

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

  3. Did it already run?

    If ded-aa-liza-ded-aa-liza-core 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. ded-aa-liza-ded-aa-liza-core on npm has been identified as a malicious package (version 35.2.5 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015639

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks ded-aa-liza-ded-aa-liza-core-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.

Explore

ded-aa-liza-ded-aa-liza-core (npm) malicious package — MAL-2026-13124 | O3 Security