delivery-ci-validate@35.1.4
Malicious code in delivery-ci-validate (npm)
Analysis
On load, the package downloads and executes a second-stage binary. It fingerprints the host platform/arch, then fetches a payload over HTTPS from Cloudflare Workers endpoints oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev, and oob-worker[.]cf103-070[.]workers[.]dev at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, or /pkg/package.exe. If HTTPS is blocked it falls back to a DNS TXT chunked transfer 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 detached via /bin/sh -c or cmd.exe /c start /b. A state file in /tmp or TEMP throttles repeat downloads.
- analyzed by
- Leitwacht
- first seen
- Aug 5, 2026, 01:31 PM
- analyzed
- Aug 5, 2026, 04:22 PM
Related advisories
- devplatform-integrations-tests-lib@35.2.5
- delivery-ci-microforms@35.3.5
- devplatform-spa-plugin-query@35.8.5
- bnpl-blocks-atom-bnpl-navigation-arrow@35.2.6
- bnpl-blocks-atom-bnpl-radio@35.4.8
- bnpl-blocks-atom-bnpl-search-input@35.9.7
- bnpl-blocks-atom-bnpl-star-rating@35.8.2
- bnpl-blocks-atom-bnpl-reviews-counter@35.3.6
Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.