{"id":"MAL-2026-11518","summary":"Malicious code in exnesss (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (184796b4aafee8400786643e9f43338886de2166171c62879cfd4c023655b487)\nPackage name 'exnesss' typosquats 'exness'. The package.json declares scripts.postinstall: 'node./postinstall.js', and postinstall.js issues an HTTPS GET to a hardcoded Burp Collaborator subdomain (hteimcuxkeb6pacscuexz4d9y04rshg6.oastify.com) on every install. This fires automatically on `npm install`, contacting an out-of-band interaction host that reveals the installer's network/DNS metadata to the operator of that Collaborator instance. The package provides no advertised functionality to the installer beyond the beacon.\n\n## Source: ossf-package-analysis (9547bba265ba397413387555d1bf269b1072ec4aba26409f22c72654c110cbf1)\nThe OpenSSF Package Analysis project identified 'exnesss' @ 0.0.1 (npm) as malicious.\n\nIt is considered malicious because:\n\n- The package communicates with a domain associated with malicious activity.\n","modified":"2026-08-04T23:05:05.220353369Z","published":"2026-08-04T09:10:31Z","database_specific":{"malicious-packages-origins":[{"modified_time":"2026-08-04T09:10:31Z","sha256":"9547bba265ba397413387555d1bf269b1072ec4aba26409f22c72654c110cbf1","source":"ossf-package-analysis","versions":["0.0.1"],"import_time":"2026-08-04T09:29:26.285906671Z"},{"id":"IN-MAL-2026-011245","import_time":"2026-08-04T22:30:06.924400373Z","modified_time":"2026-08-04T21:53:21Z","sha256":"184796b4aafee8400786643e9f43338886de2166171c62879cfd4c023655b487","source":"amazon-inspector","versions":["0.0.1"]}]},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/exnesss/v/0.0.1"}],"affected":[{"package":{"name":"exnesss","ecosystem":"npm","purl":"pkg:npm/exnesss"},"versions":["0.0.1"],"database_specific":{"cwes":[{"description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code","cweId":"CWE-506"}],"indicators":{"evidence_files":[{"path":"postinstall.js","sha256":"5588be6b21a3476a1cabfb5fcd7567482ebdb8c8ce3f3e4fa5b003254acbf170","tlsh":"edf024e879f2603816ebe8ece607ec8bb14301173494d590bace10204f876b866f12c0"}],"package_integrity":[{"filename":"exnesss-0.0.1.tgz","hashes":{"sha1":"f8fede0ac2f9603d5e07fcea8fd7b0c55aa8f922","sha512_sri":"sha512-2u2p2/XLT7Q+HIqJeV4vpb4ixTJlxWam7LguIMcdphapnnC8RQCP66gmuJvaXYQPo3GGclGfRiaKFKgb+VJjlg=="}}]},"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/exnesss/MAL-2026-11518.json"}}],"schema_version":"1.8.0","credits":[{"name":"Amazon Inspector","contact":["inspector-research@amazon.com"],"type":"FINDER"},{"name":"OpenSSF: Package Analysis","contact":["https://github.com/ossf/package-analysis","https://openssf.slack.com/channels/package_analysis"],"type":"FINDER"}]}