dolyame-ui-link@35.8.5
Malicious code in dolyame-ui-link (npm)
Analysis
dolyame-ui-link@35.8.5 is a trojanized "UI toolkit" that downloads and executes a remote binary when loaded. Requiring the package runs _loader.js, which fingerprints the OS/architecture, then fetches a second-stage binary over HTTPS from three Cloudflare Workers endpoints (oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev) at /pkg/package (or /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe depending on platform). If HTTPS fails it falls back to DNS-based loading: it reads TXT records from c[.]sdk[.]dl[.]wel1[.]ru (and sdk/ext/pkg/net[.]dl[.]wel1[.]ru) to reassemble a base64-encoded payload. The downloaded binary is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe on Windows), made executable, and launched as a detached background process. The package also probes for sandbox/analysis environments before activating.
- analyzed by
- Leitwacht
- first seen
- Aug 5, 2026, 02:05 PM
- analyzed
- Aug 5, 2026, 03:55 PM
Related advisories
- bigops-api@35.8.8
- eacq-api@35.6.1
- @onereach/slack-helpers@1.0.5
- tinkoff-statist-browser-typed-client-sme.rko.origsmartphonepaytb.common.mobile.events@20.2.5
- json-validator-utils@1.0.1
- layer2-sdk@1.0.1
- arb-kit@1.0.1
- wind_css@4.0.13
Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.