MAL-2026-3124 Malicious code in apple-internal-dev-check (npm)

Malicious npm package published by threat actor "raya4321" as part of a coordinated typosquatting campaign impersonating Apple internal infrastructure services (authentication, PKI, telemetry, CloudKit, and cloud infrastructure). All packages in this campaign execute credential-theft payloads during npm installation via preinstall or postinstall lifecycle hooks.

Trigger: postinstall. Exfiltrates full system fingerprint including hostname, username, home directory file listing, AWS credentials, GCP active config, and all environment variables, base64-encoded, to https://franki.requestcatcher.com/apple_full_leak via curl.

The package apple-internal-dev-check was found to contain malicious code.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

The OpenSSF Package Analysis project identified 'apple-internal-dev-check' @ 2.0.0 (npm) as malicious.

It is considered malicious because:

• The package executes one or more commands associated with malicious behavior.