{"id":"MAL-2025-191782","summary":"Malicious code in loggerex (PyPI)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (7a27ca3e673f54a1e041d55e84b8a0e871239df2331c9a3fd1dbe20d1fa86f56)\nIt's a clone of \"loguru\" package which on import loads a second-stage script from loguru[.]guru. This makes a few checks and downloads the next stage, which is a code obfuscated with PyArmor with unclear behaviour.\n\nThe way the malicious code has been embedded could be called a \"sophisticated\" threat. The code is in the _logger.py in two places: the payload in L2242 as a long string constraint of only whitespaces, which are then transformed into bits and bytes, and later compiled and executed using \"types.FunctionType\" during initialisation of Core class.\n\n\n---\n\nCategory: MALICIOUS - The campaign has clearly malicious intent, like infostealers.\n\n\nCampaign: 2025-07-loquru\n\n\nReasons (based on the campaign):\n\n\n - typosquatting\n\n\n - obfuscation\n\n\n - clones-real-package\n\n\n - Downloads and executes a remote malicious script.\n","modified":"2025-12-31T02:54:50.142393Z","published":"2025-08-01T15:57:37Z","database_specific":{"iocs":{"domains":["loguru.guru"],"urls":["https://loguru.guru/version/is_match_revision","https://loguru.guru/version/code"]},"malicious-packages-origins":[{"id":"pypi/2025-07-loquru/loggerex","import_time":"2025-12-02T22:30:55.313858062Z","modified_time":"2025-08-01T15:57:37.353166Z","ranges":[{"events":[{"introduced":"0"}],"type":"ECOSYSTEM"}],"sha256":"3177e123c0555fb064b49aa1a070e749e5358b403c1ff877d70c756950f1b10d","source":"kam193"},{"id":"pypi/2025-07-loquru/loggerex","import_time":"2025-12-02T23:07:18.340590241Z","modified_time":"2025-08-01T15:57:37.353166Z","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"sha256":"7a27ca3e673f54a1e041d55e84b8a0e871239df2331c9a3fd1dbe20d1fa86f56","source":"kam193"},{"id":"pypi/2025-07-loquru/loggerex","import_time":"2025-12-10T21:38:57.573369848Z","modified_time":"2025-08-01T15:57:37.353166Z","sha256":"bcb53463166fd2bbbd8749db30bbc923dd192ac35348d123548a3ae4a64ac65d","source":"kam193","versions":["0.7.4","0.7.6","0.7.5"]},{"versions":["0.7.4","0.7.5","0.7.6"],"id":"pypi/2025-07-loquru/loggerex","import_time":"2025-12-30T22:39:04.123757641Z","modified_time":"2025-08-01T15:57:37.353166Z","sha256":"77058b0f2ca4f22fe73bd6290136df9a273f4f9473dc8840146776b480d2026e","source":"kam193"}]},"references":[{"type":"WEB","url":"https://github.com/Delgan/loguru/issues/1363"},{"type":"WEB","url":"https://bad-packages.kam193.eu/pypi/package/loggerex"}],"affected":[{"package":{"name":"loggerex","ecosystem":"PyPI","purl":"pkg:pypi/loggerex"},"versions":["0.7.4","0.7.6","0.7.5"],"database_specific":{"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/loggerex/MAL-2025-191782.json"}}],"schema_version":"1.7.3","credits":[{"name":"Kamil Mańkowski (kam193)","contact":["https://github.com/kam193","https://bad-packages.kam193.eu/"]},{"name":"Kamil Mańkowski (kam193)","contact":["https://github.com/kam193","https://bad-packages.kam193.eu/"],"type":"REPORTER"}]}