LWA-2026-10305 MAL-2026-13188 ↗ confirmed malware

dolyame-ui-swiper@35.7.7

Malicious code in dolyame-ui-swiper (npm)

T1059 · Command and Scripting InterpreterT1059.007 · JavaScriptT1105 · Ingress Tool TransferT1071.001 · Web ProtocolsT1102 · Web ServiceT1573 · Encrypted ChannelT1082 · System Information DiscoveryT1059.001 · PowerShell

Analysis

dolyame-ui-swiper@35.7.7 is a multi-stage downloader. On require, package/_bridge.js runs immediately (no install hook needed): it fingerprints the OS/arch, then downloads a second-stage binary from a rotating set of Cloudflare Workers hosts (oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev) at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, or /pkg/package.exe depending on platform. If the HTTP fetch fails it falls back to a DNS-TXT-based download channel via c[.]sdk[.]dl[.]wel1[.]ru (and sdk[.]dl[.]wel1[.]ru / ext[.]dl[.]wel1[.]ru / pkg[.]dl[.]wel1[.]ru / net[.]dl[.]wel1[.]ru), reassembling base64 chunks from TXT records. The fetched binary is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe in %TEMP% on Windows), chmod 755, and executed detached via /bin/sh -c or cmd.exe /c start /b, so it outlives the parent process. Execution is rate-limited to once per ~5.8h window via a stamp file. The package also probes for sandbox markers before activating.

analyzed by
Leitwacht
first seen
Aug 5, 2026, 03:09 PM
analyzed
Aug 5, 2026, 03:26 PM

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Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.