bigops-awesome-viewer@35.1.4
Malicious code in bigops-awesome-viewer (npm)
Analysis
At require time, the package downloads and executes a binary payload. It detects the OS/architecture, then fetches a binary from Cloudflare Workers endpoints (oob-worker[.]cf103-070[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev) via HTTPS. If those fail, it falls back to DNS TXT-record-based chunked download from domains including sdk[.]dl[.]wel1[.]ru, ext[.]dl[.]wel1[.]ru, pkg[.]dl[.]wel1[.]ru, and net[.]dl[.]wel1[.]ru. The downloaded binary is written to /var/tmp/.cache_<random-hex> (or %TEMP%\dotnet_diag_<hex>.exe on Windows) and spawned as a detached process. The package has no repository and no documented purpose beyond a generic description.
- analyzed by
- Leitwacht
- first seen
- Aug 3, 2026, 06:58 PM
- analyzed
- Aug 3, 2026, 07:02 PM
Related advisories
- tinkoff-statist-browser-typed-client-mb.product.tgeofencing@20.9.6
- dolyame-boxy-independent-bnpl-info-images@20.7.2
- pfp-block-mobile-steps@20.9.3
- tinkoff-boxy-desktop-two-panel-right-image@20.4.8
- beaver-ui-hooks@12.6.3
- beaver-ui-form-modal@12.7.6
- dolyame-ui-sortablelist@35.8.1
- delivery-ci-codeceptjs@35.1.7
Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.