{"data":{"id":"264b59b3-dea2-49a8-9ed1-ef25aeed1698","title":"Shai-Hulud Descendant Surfaces in Malicious Ruby Gem That Steals Credentials and Poisons AI Tools","summary":"Socket's Threat Research Team analyzed strutil-core version 1.0.1, a malicious RubyGems package that runs a credential-stealing worm during gem install. The worm is a new build of the testmetest worm from the Miasma family, which descends from the publicly released Shai-Hulud toolkit. The malicious gem was published by account jamnajiea and removed by RubyGems about five hours after release.","solution":"N/A -- no mitigation discussed in source.","labels":["security","industry"],"sourceUrl":"https://socket.dev/blog/shai-hulud-descendant-malicious-ruby-gem?utm_medium=feed","publishedAt":"2026-11-06T17:11:11.050Z","cveId":null,"cweIds":null,"cvssScore":null,"cvssSeverity":null,"severity":"medium","attackType":["supply_chain"],"issueType":"news","affectedPackages":null,"affectedPackageNames":null,"affectedPackageRefs":null,"affectedVendors":[],"affectedVendorsRaw":["strutil-core","Shai-Hulud","testmetest worm","Miasma","Claude Code","MCP servers"],"classifierModel":"claude-haiku-5-5","classifierPromptVersion":"v4","summaryPromptVersion":"v2","headline":null,"headlinePromptVersion":null,"cvssVector":null,"attackVector":null,"attackComplexity":null,"privilegesRequired":null,"userInteraction":null,"exploitMaturity":null,"epssScore":null,"epssCheckedAt":null,"kevDateAdded":null,"advisoryAliases":null,"affectedPackagesSource":null,"affectedPackagesCheckedAt":null,"patchAvailable":null,"disclosureDate":"2026-11-06T17:11:11.050Z","fixReleasedAt":null,"daysToFix":null,"fixCheckedAt":null,"capecIds":null,"crossRefCount":0,"attackSophistication":"advanced","impactType":["confidentiality","integrity","availability"],"aiComponentTargeted":"plugin","llmSpecific":false,"classifierConfidence":0.8,"researchCategory":null,"atlasIds":["AML.T0010"]}}