# MAL-2026-13004: Malicious code in bnpl-blocks-mobile-bnpl-separator (npm) - **Type:** Malicious package - **Package:** `bnpl-blocks-mobile-bnpl-separator` (npm) - **Published:** 5 Aug 2026 ## What is MAL-2026-13004? MAL-2026-13004 is a malicious package in bnpl-blocks-mobile-bnpl-separator, published on 5 Aug 2026. ### Official description On require of the package, index.js loads _bootstrap.js which fetches a platform-specific binary payload over HTTPS from author-controlled hosts whose names are assembled at runtime by joining split string fragments (resolving to *.workers.dev subdomains), with a fallback that reassembles a base64-chunked payload from DNS TXT records under *.dl.wel1.ru. The fetched binary is written to /tmp/.cache_ on Unix or %TEMP%/dotnet_diag_.exe on Windows, chmod'd 0755, and spawned detached via /bin/sh -c or cmd. A stamp file named.analytics_state and env-var checks for DISABLE_TELEMETRY/ANALYTICS_OPT_OUT are used as a telemetry-themed cover. The destination hosts are not the package's publisher infrastructure, the fetched bytes are opaque and unpinned, and execution occurs at import time on every consumer machine. ## What should I do about MAL-2026-13004? 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-2026-13004 is a malicious package: bnpl-blocks-mobile-bnpl-separator (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-2026-13004/ (Markdown: https://insights.sbomify.com/MAL-2026-13004/index.md) ``` ## Sources - OSV: https://osv.dev/vulnerability/MAL-2026-13004 --- From sbomify Insights: https://insights.sbomify.com/MAL-2026-13004/ Summaries are generated and may contain mistakes; the official description above is the record.