{"id":"MAL-2026-2899","summary":"Malicious code in chai-use-chains (npm)","details":"chai-use-chains is a malicious npm package that when imported downloads a C2 dropper from https://jsonkeeper[.]com/b/FAWPU and executes it (similar to malware in to chai-await-test).\n\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (82cb30ff865bcb0071b1861dd09c9b8e770861b76d263b30e42aafd54626c39b)\nThe package chai-use-chains was found to contain malicious code.\n","aliases":["GHSA-x74q-vqg8-cc8f"],"modified":"2026-09-01T11:31:29.552918317Z","published":"2026-04-15T22:05:03Z","database_specific":{"malicious-packages-origins":[{"modified_time":"2026-04-23T20:43:56Z","ranges":[{"events":[{"introduced":"0"}],"type":"SEMVER"}],"sha256":"82cb30ff865bcb0071b1861dd09c9b8e770861b76d263b30e42aafd54626c39b","source":"amazon-inspector","import_time":"2026-04-23T20:49:07.40443128Z"},{"source":"reversing-labs","versions":["1.2.6","1.2.7"],"id":"RLMA-2026-05013","import_time":"2026-07-09T09:16:23.881255636Z","modified_time":"2026-07-07T12:43:51Z","sha256":"e4e561c5119981ab0a4531c0538ae3eae922ea8830a4360a7f0a4512dd09ab8b"},{"import_time":"2026-09-01T11:18:00.099599506Z","modified_time":"2026-08-24T16:43:59Z","sha256":"44d63dd94f8fbdda380398116c306bf1e687dbc90792c751e8a23d399581848b","source":"reversing-labs","id":"RLUA-2026-06144"}],"iocs":{"urls":["https://jsonkeeper.com/b/FAWPU"]}},"references":[{"type":"REPORT","url":"https://www.indece.com/en-US/blog/7df041ba-feb1-4d87-918b-7fc2c709d805"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-x74q-vqg8-cc8f"}],"affected":[{"package":{"name":"chai-use-chains","ecosystem":"npm","purl":"pkg:npm/chai-use-chains"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}],"versions":["1.2.6","1.2.7"],"database_specific":{"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/chai-use-chains/MAL-2026-2899.json"}}],"schema_version":"1.9.0","credits":[{"name":"Amazon Inspector","contact":["actran@amazon.com"],"type":"FINDER"},{"name":"ReversingLabs","contact":["https://www.reversinglabs.com"],"type":"FINDER"},{"name":"indece","contact":["https://indece.com"],"type":"FINDER"}]}