ctf-toolkit

{"modified":"2026-02-28T12:14:27Z","published":"2026-02-28T11:25:17Z","schema_version":"1.7.4","id":"MAL-2026-1085","summary":"Malicious code in ctf-toolkit (PyPI)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (e47981485066b674150cc4d9d3709e41707e69111f188e54e772becc7349ab89)\nThe package states to contain a modified curl library to allow low-level request modifications. However, there is also undisclosed malicious behavior:\n\n1. The package installs a .pth file directly in the site-packages directory, effectively running a special code on each Python usage.\n2. This code performs \"TLS context warm-up\" by contacting a URL (Github) in the background, in a separate process; this is suspicious on its own as it's unclear how a separate process can warm up further requests in the main process, but...\n3. ...besides the URL given in the code above, the library always contacts a hardcoded URL, identifying itself as a VPN client.\n\nAdditionally, there is no source code of the modified library anywhere, and the related Github hosting the package code account is 1-day old.\n\n\n---\n\nCategory: MALICIOUS - The campaign has clearly malicious intent, like infostealers.\n\n\nCampaign: 2026-02-ctf-toolkit\n\n\nReasons (based on the campaign):\n\n\n - The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.\n","affected":[{"package":{"ecosystem":"PyPI","name":"ctf-toolkit"},"versions":["0.1.0"]}],"references":[{"type":"WEB","url":"https://github.com/Wang-SecurityResearch/ctf_toolkit"},{"type":"WEB","url":"https://web.archive.org/web/20260228111147/https://github.com/Wang-SecurityResearch"},{"type":"WEB","url":"https://bad-packages.kam193.eu/pypi/package/ctf-toolkit"}],"credits":[{"name":"Kamil Mańkowski (kam193)","type":"ANALYST","contact":["https://github.com/kam193","https://bad-packages.kam193.eu/"]},{"name":"Kamil Mańkowski (kam193)","type":"REPORTER","contact":["https://github.com/kam193","https://bad-packages.kam193.eu/"]}],"database_specific":{"iocs":{"domains":["vpnico-1318014164.cos.ap-singapore.myqcloud.com"],"urls":["https://vpnico-1318014164.cos.ap-singapore.myqcloud.com/ico.bmp"]},"malicious-packages-origins":[{"source":"kam193","sha256":"e47981485066b674150cc4d9d3709e41707e69111f188e54e772becc7349ab89","import_time":"2026-02-28T11:37:37.82652693Z","id":"pypi/2026-02-ctf-toolkit/ctf-toolkit","modified_time":"2026-02-28T11:25:17.282133Z","versions":["0.1.0"]},{"source":"kam193","sha256":"a6897f514bad93436c6458f83ca25706fed8306de7dadce313cff934170d9832","import_time":"2026-02-28T12:12:42.923798107Z","id":"pypi/2026-02-ctf-toolkit/ctf-toolkit","modified_time":"2026-02-28T11:25:17.282133Z","versions":["0.1.0"]}]}}