CRITICAL RubyGems Malware

Malicious code in agentic-call-control (RubyGems)

MAL-2026-18763

Published · Modified

Dependency scanning

Check whether agentic-call-control is in your codebase

Corgea flags malicious and compromised dependencies with reachability analysis, so you fix the packages that actually run in your application instead of working through the whole lockfile.

Description


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Source: amazon-inspector (6604e2b2afca5be9f394786598898c0d718100ef3cb3595590fb74949b3eb9b5)

The gem's native extension script executes during gem install and harvests installer-side data without consent. It collects host identifiers (current working directory, home directory, hostname, login name) and reads the contents of /etc/resolv.conf, /etc/passwd, and /etc/hosts, serializes them as JSON, and POSTs the payload over TLS to the hardcoded host k6rqb5d1inuytrro2u6arv87vy1vplda.oastify.com on port 443 using TCPSocket/OpenSSL. A DNS lookup to the same subdomain is also issued as an out-of-band beacon. The destination is a Burp Collaborator subdomain — attacker-controlled out-of-band interaction infrastructure unrelated to any declared publisher or build dependency. There is no native source tree or build logic that would require this network activity; the extension script's sole effect on install is reconnaissance exfiltration.

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