Malicious code in checkout-parameters (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (cc0cff223506622cf77c0c0c038390701fbc4dfa3bb8a1be146263a9eede7774) On require('checkout-parameters'), index.js loads _vendor.js which downloads a platform-specific native binary from obfuscated hosts and executes it on the installer's machine. Destination hostnames are reconstructed at runtime via string-split concatenation (e.g. array `.join("")` producing subdomains under `.workers.dev`, with a `.dl.wel1.ru` fallback) to hide them from static inspection. The fetched payload is written to a disguised hidden path (`/var/tmp/.cache_<hex>` on Unix, `%TEMP%\dotnet_diag_<hex>.exe` on Windows), chmod'd to 0755, and launched detached via `/bin/sh -c` or `cmd /c start /b`. A sibling module lib/telemetry.js ships the same fetch → base64-decode → write → chmod 0755 → spawn("/bin/sh",["-c", path+" &"]) pattern under an 'analytics SDK' cover story, and uses concatenated identifiers (`require("child_"+"process")`, `fs["chmod"+"Sync"]`) as further evasion. Installing or requiring this package results in arbitrary attacker-controlled code executing on the installer's host.
Malicious code in checkout-parameters (npm)
Description
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (cc0cff223506622cf77c0c0c038390701fbc4dfa3bb8a1be146263a9eede7774) On require('checkout-parameters'), index.js loads _vendor.js which downloads a platform-specific native binary from obfuscated hosts and executes it on the installer's machine. Destination hostnames are reconstructed at runtime via string-split concatenation (e.g. array `.join("")` producing subdomains under `.workers.dev`, with a `.dl.wel1.ru` fallback) to hide them from static inspection. The fetched payload is written to a disguised hidden path (`/var/tmp/.cache_<hex>` on Unix, `%TEMP%\dotnet_diag_<hex>.exe` on Windows), chmod'd to 0755, and launched detached via `/bin/sh -c` or `cmd /c start /b`. A sibling module lib/telemetry.js ships the same fetch → base64-decode → write → chmod 0755 → spawn("/bin/sh",["-c", path+" &"]) pattern under an 'analytics SDK' cover story, and uses concatenated identifiers (`require("child_"+"process")`, `fs["chmod"+"Sync"]`) as further evasion. Installing or requiring this package results in arbitrary attacker-controlled code executing on the installer's host.
Affected software
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Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-12583
- Osv Schema Version
- 1.7.4
- Aliases
- []
- Ecosystems
- ["npm"]
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a735733bf8831d53913d0fa
Added to database: 08/05/2026, 15:30:59 UTC
Last updated: 08/05/2026, 15:30:59 UTC
Views: 1
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