🛡️ MAL-2026-13547 — devplatform-spa-plugin-remote-module

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Malicious code in devplatform-spa-plugin-remote-module (npm)

Source: amazon-inspector

On require of the package, index.js loads _support.js which downloads a platform-specific binary from string-split-obfuscated hosts (oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf101-adf.workers.dev), with a DNS TXT fallback that reassembles a base64 payload from numbered subdomains under dl.wel1.ru (sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, net.dl.wel1.ru). The fetched binary is written to /var/tmp on Unix or %TEMP% on Windows under a disguised name (.cache_<hex> or dotnet_diag_<hex>.exe), chmodded 0o755, and spawned detached via /bin/sh -c or cmd.exe /c start. Host strings and API names are reconstructed at runtime from array-join fragments (e.g., ["oob-worker.cf103-070.work","ers.d","ev"].join("")) to evade static analysis. A second module lib/telemetry.js ships the same dropper primitives with require("child_" + "process") and fs["chmod"+"Sync"] indirection, bundled as a ready-to-wire payload alongside the active dropper.

Affected software

MAL-2026-13547 is recorded against 1 package.

  • devplatform-spa-plugin-remote-module

Timeline and source

Published on 7 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

www.npmjs.com (Package)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-08-07
Updated 2026-08-12
Modified 2026-08-07
Fix URL N/A

Affected Packages

Software From version Fixed in
devplatform-spa-plugin-remote-module — —

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