{"id":"MAL-2026-18300","summary":"Malicious code in claudeopusenifile (PyPI)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (051daf7dfb8c28210996afbf561646b38781f563483e6c2e7471add0a6021885)\nDuring installation, obfuscated code is used to fetch code hidden in an image containing a Python application with a native extension module. This module holds an obfuscated infostealer which collects sensitive data and exfiltrates them to a C2 server retrieved from transaction history in the Polygon blockchain.\n\n\n---\n\nCategory: MALICIOUS - The campaign has clearly malicious intent, like infostealers.\n\n\nCampaign: 2026-09-donutautosellsrc\n\n\nReasons (based on the campaign):\n\n\n - infostealer\n\n\n - Downloads and executes a remote executable.\n\n\n - obfuscation\n\n\n - The package contains code to detect if it is running in a sandbox environment.\n\n\n - malware\n\n\n - native-extension\n\n\n - steganography\n\n\n - c2-in-blockchain\n","modified":"2026-10-26T01:00:04.471360293Z","published":"2026-10-25T23:40:43Z","database_specific":{"malicious-packages-origins":[{"id":"pypi/2026-09-donutautosellsrc/claudeopusenifile","import_time":"2026-10-26T00:47:12.51841174Z","modified_time":"2026-10-25T23:40:43.419704Z","sha256":"051daf7dfb8c28210996afbf561646b38781f563483e6c2e7471add0a6021885","source":"kam193","versions":["0.1.3"]}],"iocs":{"domains":["thisisafalsepositive.st","sltnnt.ru"],"urls":["https://thisisafalsepositive.st/cdn/v2/9f4e7a2c1b8d.png","https://thisisafalsepositive.st/cdn/v2/promotion/manifest.json","https://thisisafalsepositive.st/shard/submitData","https://thisisafalsepositive.st/shard/submitLogs","https://thisisafalsepositive.st/shard/submitFile"]}},"references":[{"type":"EVIDENCE","url":"https://www.virustotal.com/gui/file/d03c42c275f0dbc617428441508c49ae1adcbbc95af4eeb094bca4e4f8943f3e/detection"},{"type":"WEB","url":"https://polygonscan.com/address/0x9c0a507300fd902787bb193d80fca5ce6e1bff9a"},{"type":"WEB","url":"https://bad-packages.kam193.eu/pypi/package/claudeopusenifile"}],"affected":[{"package":{"name":"claudeopusenifile","ecosystem":"PyPI","purl":"pkg:pypi/claudeopusenifile"},"versions":["0.1.3"],"database_specific":{"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/claudeopusenifile/MAL-2026-18300.json"}}],"schema_version":"1.9.0","credits":[{"name":"Kamil Mańkowski (kam193)","contact":["https://github.com/kam193","https://bad-packages.kam193.eu/"],"type":"REPORTER"}]}