mal-2025-191915
Vulnerability from ossf_malicious_packages
Published
2025-04-04 12:54
Modified
2025-12-11 09:27
Summary
Malicious code in ultrafasttelethon (PyPI)
Details

-= Per source details. Do not edit below this line.=-

Source: kam193 (73a960b0cd2d21f8bde61f22f956a4c2a02ccddd9e1277eef23d3d8e0406cba4)

Clone of Telethon package that exfiltrates credentials. See client/telegrambaseclient.py L608-626 (exfiltration function) and client/auth.py L163 (usage).


Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.

Campaign: 2025-04-fastgram

Reasons (based on the campaign):

  • clones-real-package

  • action-hidden-in-lib-usage

  • exfiltration-generic


{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "ultrafasttelethon"
      },
      "versions": [
        "1.39.0",
        "1.39.0.1",
        "1.39.0.2",
        "1.39.0.3"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "https://github.com/kam193",
        "https://bad-packages.kam193.eu/"
      ],
      "name": "Kamil Ma\u0144kowski (kam193)"
    },
    {
      "contact": [
        "https://github.com/kam193",
        "https://bad-packages.kam193.eu/"
      ],
      "name": "Kamil Ma\u0144kowski (kam193)",
      "type": "REPORTER"
    }
  ],
  "database_specific": {
    "iocs": {
      "domains": [
        "a1091388.xsph.ru",
        "a1124634.xsph.ru"
      ]
    },
    "malicious-packages-origins": [
      {
        "id": "pypi/2025-04-fastgram/ultrafasttelethon",
        "import_time": "2025-12-02T22:30:55.689812488Z",
        "modified_time": "2025-04-04T12:54:50Z",
        "ranges": [
          {
            "events": [
              {
                "introduced": "0"
              }
            ],
            "type": "ECOSYSTEM"
          }
        ],
        "sha256": "2f2335d63eb797b5edb8c95d3c5c088e72acab99487bbea8294706207e379ad0",
        "source": "kam193"
      },
      {
        "id": "pypi/2025-04-fastgram/ultrafasttelethon",
        "import_time": "2025-12-02T23:07:18.736046313Z",
        "modified_time": "2025-04-04T12:54:50Z",
        "ranges": [
          {
            "events": [
              {
                "introduced": "0"
              }
            ],
            "type": "ECOSYSTEM"
          }
        ],
        "sha256": "73a960b0cd2d21f8bde61f22f956a4c2a02ccddd9e1277eef23d3d8e0406cba4",
        "source": "kam193"
      },
      {
        "id": "pypi/2025-04-fastgram/ultrafasttelethon",
        "import_time": "2025-12-10T21:38:57.908035501Z",
        "modified_time": "2025-04-04T12:54:50Z",
        "sha256": "29602e2cd7f36a4d478bdcd0bb75c12f7c61a35d253b73bd36f9a1e6975adab2",
        "source": "kam193",
        "versions": [
          "1.39.0",
          "1.39.0.1",
          "1.39.0.2",
          "1.39.0.3"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (73a960b0cd2d21f8bde61f22f956a4c2a02ccddd9e1277eef23d3d8e0406cba4)\nClone of Telethon package that exfiltrates credentials. See client/telegrambaseclient.py L608-626 (exfiltration function) and client/auth.py L163 (usage).\n\n\n---\n\nCategory: MALICIOUS - The campaign has clearly malicious intent, like infostealers.\n\n\nCampaign: 2025-04-fastgram\n\n\nReasons (based on the campaign):\n\n\n - clones-real-package\n\n\n - action-hidden-in-lib-usage\n\n\n - exfiltration-generic\n",
  "id": "MAL-2025-191915",
  "modified": "2025-12-11T09:27:54Z",
  "published": "2025-04-04T12:54:50Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://bad-packages.kam193.eu/pypi/package/ultrafasttelethon"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in ultrafasttelethon (PyPI)"
}


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