MAL-2026-13182 Malicious code in dolyame-ui-select (npm)

Malicious package Published
Package
dolyame-ui-select
Registry
npm

What is MAL-2026-13182?

MAL-2026-13182 is a malicious package in dolyame-ui-select, published on 5 Aug 2026.

Official description

On require of the package, index.js loads bridge.js, which reconstructs C2 hostnames from split string fragments (resolving to oob-worker.cf103-07.workers.dev, oob-worker.cf99-9b3.workers.dev, and oob-worker.cf100-416.workers.dev), downloads a platform-specific binary from /pkg/package[.exe|-arm64|mac], writes it to /var/tmp/.cache<hex> or %TEMP%\dotnet_diag<hex>.exe, chmods it 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start /b. A DNS TXT covert channel over *.dl.wel1.ru (c.<domain> count + <n>.<domain> base64 chunks) provides a fallback transport when HTTPS egress is blocked. Cover-story identifiers such as analytics and dotnet_diag disguise the payload, and a ~20455s persistence flag paces re-execution. A second, larger dropper variant with the same behavior ships as lib/telemetry.js (~81KB) under an analytics-sdk cover story, ready to be wired in.

What should I do about MAL-2026-13182?

Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.

Sources

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