# MAL-2026-13240: Malicious code in bigops-products-insurance (npm)


- **Type:** Malicious package
- **Package:** `bigops-products-insurance` (npm)
- **Published:** 5 Aug 2026

## What is MAL-2026-13240?

MAL-2026-13240 is a malicious package in bigops-products-insurance, published on 5 Aug 2026. 

### Official description

On require, index.js loads _ext.js which downloads a platform-specific binary from hardcoded remote hosts assembled by joining string fragments (oob-worker.cf10{0-3}-*.workers.dev and sdk/ext/pkg/net.dl.wel1.ru), with DNS TXT-record chunked base64 as a fallback delivery channel. The binary is written to /var/tmp or %TEMP% under disguised names (dotnet_diag_<tag>.exe on Windows,.cache_<tag> on Unix), chmodded 755, and executed detached via spawn('/bin/sh','-c',...) or spawn('cmd',...). Host strings are split into arrays and.join()'d at runtime to evade static matching, and telemetry-style env-var names (DISABLE_TELEMETRY, ANALYTICS_OPT_OUT) frame the behavior as diagnostics. Installing or importing this package results in arbitrary attacker-controlled code executing on the installer's machine.

## What should I do about MAL-2026-13240?

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

## Fix prompt for AI coding agents

```text
MAL-2026-13240 is a malicious package: bigops-products-insurance (npm). Every version was published to cause harm.

Task:
1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.
2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.
3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.
4. If the package is not used anywhere, say so and change nothing.

Reference: https://insights.sbomify.com/MAL-2026-13240/ (Markdown: https://insights.sbomify.com/MAL-2026-13240/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13240

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-13240/
Summaries are generated and may contain mistakes; the official description above is the record.