MAL-2026-13591
Dashboard / Malicious Package / MAL-2026-13591
MAL-2026-13591
Summary: Malicious code in dolyame-ui-overridestyles (npm)
Details: Source: amazon-inspector (38d2bc1cbc6567633387613915ff6d5637770cfa636a8d0ec14c99ef91b73a72) On require() of the package, `_compat.js` invokes a setup() routine that downloads a platform-specific binary from Cloudflare Workers hosts assembled by joining split string fragments (oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf102-baf.workers.dev), with a DNS-TXT chunked-base64 fallback across sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. The fetched bytes are written to a cover-named file under TMP or /var/tmp (e.g., dotnet_diag_*.exe,.cache_*), chmod 0755 on Unix, and spawned detached via /bin/sh -c or cmd.exe. A second dropper path in lib/telemetry.js (loaded via the package `main`) reconstructs an executable from base64 buffers, chmods 0755, and spawns via /bin/sh. Hostnames, the `child_process` require, and `chmodSync` are constructed by concatenation to evade static scanners. No hash or signature verification is performed on the downloaded payloads. The purpose is inconsistent with the package's presented name (a UI style-override library).
Affected packages
Package
Name: dolyame-ui-overridestyles
Purl: pkg:npm/dolyame-ui-overridestyles
Affected ranges
Type: N/A
Events:
