npm

dolyame-ui-stepper @35.7.5

Vulnerability report · Last retrieved from osv.dev August 6, 2026 at 1:06 AM UTC

Malicious

OSV ID

MAL-2026-13185

Ecosystem

npm

Summary

On require('dolyame-ui-stepper') , index.js unconditionally loads _shim.js, which assembles hostnames from split string fragments (resolving to oob-worker.cf{101-adf,99-9b3,100-416,103-070}.workers.dev, with a DNS-TXT base64 fallback via {sdk,ext,pkg,net}.dl.wel1.ru), fetches a platform-matched native binary over https.get, writes it to a temporary path under a disguised name (dotnet_diag_<hex>.exe on Windows,.cache_<hex> on POSIX), chmods 0o755, and spawns it detached via /bin/sh -c '<file> &' or cmd.exe /c start /b . A duplicate dropper implementation using the same primitives (base64 chunk assembly, chmod 755, detached spawn) is also staged in lib/telemetry.js under an 'Analytics SDK' cover story, though not reachable from the current main. The destination hosts are obfuscated via string-splitting, the dropped filename impersonates a Microsoft diagnostic tool, and the fetch-and-execute path fires on every import with no user interaction.

Source: amazon-inspector (25a9668418d3b01588efbd1a9385ae05b720cf72761700fe815d10d3d0e834b3)

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