MAL-2026-13124 Malicious code in ded-aa-liza-ded-aa-liza-core (npm)

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.