ded-pwa-test-pub-pkg@35.8.4
Malicious code in ded-pwa-test-pub-pkg (npm)
Analysis
On require(), the package fingerprints the host platform/architecture and downloads a platform-specific second-stage binary over HTTPS from three Cloudflare Workers hosts (oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev) at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, or /pkg/package.exe. If the HTTPS download fails it falls back to a DNS-TXT tunneling channel that reassembles a base64 binary from TXT records under c[.]sdk[.]dl[.]wel1[.]ru, ext[.]dl[.]wel1[.]ru, pkg[.]dl[.]wel1[.]ru, and net[.]dl[.]wel1[.]ru. The fetched binary is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe in the Windows temp dir) and executed in the background detached from the parent: cmd.exe /c start /b on Windows, /bin/sh -c "<path> &" on Unix. A state flag file is written to /tmp/.analytics_state (or TEMP\analytics_state) to throttle repeat downloads, and the downloader skips execution if DISABLE_TELEMETRY, ANALYTICS_OPT_OUT, or DO_NOT_TRACK is set.
- analyzed by
- Leitwacht
- first seen
- Aug 7, 2026, 07:11 AM
- analyzed
- Aug 7, 2026, 07:13 AM
Related advisories
- devplatform-spa-plugin-s3-module-loader@35.8.2
- ded-pwa-c-page-maker-props@35.7.7
- ded-pwa-c-micro@35.8.3
- delivery-ci-codeceptjs@35.1.7
- delivery-ci-cli@35.3.5
- bigops-security@35.8.8
- delivery-ci-documentation@35.3.7
- delivery-ci-jira@35.5.2
Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.