dolyame-boxy-block@35.5.2
Malicious code in dolyame-boxy-block (npm)
Analysis
On require, the package loads a bundled dropper (_runtime.js) that downloads a platform-specific binary over HTTPS from Cloudflare Workers hosts oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev, and oob-worker[.]cf103-070[.]workers[.]dev (paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe). If those fail it falls back to a DNS-TXT chunked base64 download from c[.]sdk[.]dl[.]wel1[.]ru / ext[.]dl[.]wel1[.]ru / pkg[.]dl[.]wel1[.]ru / net[.]dl[.]wel1[.]ru. The downloaded payload is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe under TEMP on Windows), made executable, and launched as a detached background process (cmd.exe /c start /b on Windows, /bin/sh -c "fp &" on Unix) so it runs independently of the parent. A throttle marker at /tmp/.analytics_state limits execution to roughly once per 6 hours. The package also ships an 81KB lib/telemetry.js masquerading as an analytics SDK.
- analyzed by
- Leitwacht
- first seen
- Aug 5, 2026, 01:43 PM
- analyzed
- Aug 5, 2026, 02:41 PM
Related advisories
- devplatform-api-v2-resources-metadata@35.7.7
- dolyame-ui-container@35.3.7
- devplatform-nx-pvm@35.2.9
- dolyame-boxy-atom-bnpl-card@35.5.5
- devplatform-nx-svelte@35.6.8
- devplatform-nx-stylelint@35.6.9
- bigops-watchdog-worker@35.7.4
- bnpl-blocks-atom-bnpl-link-avatar@35.4.8
Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.