devplatform-ui-notification@35.3.6
Malicious code in devplatform-ui-notification (npm)
Analysis
On require, the package executes a multi-stage dropper. It downloads a platform-specific binary from Cloudflare Workers mirror hosts oob-worker[.]cf103-070[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev, and oob-worker[.]cf100-416[.]workers[.]dev (paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe), with a DNS-TXT fallback channel via c[.]sdk[.]dl[.]wel1[.]ru. The downloaded payload is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe on Windows), made executable, and launched as a detached background process via cmd.exe /c start /b or /bin/sh -c "<path> &". The package's main module is a stub class; the dropper runs automatically when the module is loaded.
- analyzed by
- Leitwacht
- first seen
- Aug 5, 2026, 01:40 PM
- analyzed
- Aug 5, 2026, 02:59 PM
Related advisories
- dolyame-boxy-atom-bnpl-dangerously-html@35.5.4
- devplatform-spa-plugin-root-devtools@35.5.6
- devplatform-npm-versions-checker@35.5.9
- delivery-ci-storybook@35.5.8
- devplatform-spa-plugin-sentry@35.1.1
- dolyame-boxy-desktop-bnpl-button-set@35.2.4
- devplatform-spa-plugin-module-loader@35.8.5
- devplatform-spa-di@35.5.8
Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.