MAL-2026-13207 Malicious code in eacq-api (npm)
Malicious package
Published
MAL-2026-13207 is a malicious package: eacq-api (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-2026-13207/ (Markdown: https://insights.sbomify.com/MAL-2026-13207/index.md)
- Package
- eacq-api
- Registry
- npm
What is MAL-2026-13207?
MAL-2026-13207 is a malicious package in eacq-api, published on 5 Aug 2026.
Official description
On require() of eacq-api, index.js loads compat.js which reconstructs C2 hostnames from string-split fragments (oob-worker.cf10{0,1,2,3}-*.workers.dev) and a DNS TXT chunked-base64 fallback channel over *.dl.wel1.ru subdomains (sdk/ext/pkg/net). getBinary() downloads a platform-specific opaque binary over HTTPS (or via the DNS TXT fallback), writes it to a disguised path under /tmp or %TEMP% such as dotnet_diag<hex>.exe or.cache_<hex>, chmods it 0755, and spawns it detached via /bin/sh -c or cmd.exe. Execution is gated only by a filesystem cooldown marker and env opt-out flags; there is no hash or signature verification of the fetched bytes despite a comment claiming SHA-256 checking. The delivery infrastructure (anonymous Cloudflare Workers hosts + a DNS TXT covert channel) is unrelated to any legitimate API-client purpose, and the endpoint reconstruction plus alternate DNS transport indicate deliberate evasion of static scanners.
What should I do about MAL-2026-13207?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.