mal-2025-191620
Vulnerability from ossf_malicious_packages
Published
2025-10-25 15:44
Modified
2025-12-03 00:04
Summary
Malicious code in benign-lib (PyPI)
Details

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

Source: kam193 (09477b048d84611002417894ccb3265d246be0156b096a8b47776960d45e9d3d)

Package hides an executable inside, and starts it when imported. The sandbox analysis shows only starting a calculator, which suggests it's a research attempt without a big harm.


Category: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research & co, with clearly low-harm possibilities.

Campaign: 2025-10-benign-lib

Reasons (based on the campaign):

  • malware

  • obfuscation


{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "benign-lib",
        "purl": "pkg:pypi/benign-lib"
      },
      "versions": [
        "1.0.0"
      ]
    }
  ],
  "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"
    },
    {
      "contact": [
        "https://www.reversinglabs.com"
      ],
      "name": "ReversingLabs",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "RLMA-2025-05587",
        "import_time": "2025-12-02T09:09:36.125262494Z",
        "modified_time": "2025-12-01T12:54:05Z",
        "sha256": "376aeae73b37815142b47e2fba740d180196b7e5f760475ae3333b3e87bc4d70",
        "source": "reversing-labs",
        "versions": [
          "1.0.0"
        ]
      },
      {
        "id": "pypi/2025-10-benign-lib/benign-lib",
        "import_time": "2025-12-02T22:30:55.880575921Z",
        "modified_time": "2025-10-25T15:44:07.884053Z",
        "sha256": "dde05c4a0256dc32b25188e40f8bd2b4d3e3348cea23c0160994d46728c4c6bb",
        "source": "kam193",
        "versions": [
          "1.0.0"
        ]
      },
      {
        "id": "pypi/2025-10-benign-lib/benign-lib",
        "import_time": "2025-12-02T23:07:19.063999962Z",
        "modified_time": "2025-10-25T15:44:07.884053Z",
        "sha256": "09477b048d84611002417894ccb3265d246be0156b096a8b47776960d45e9d3d",
        "source": "kam193",
        "versions": [
          "1.0.0"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (09477b048d84611002417894ccb3265d246be0156b096a8b47776960d45e9d3d)\nPackage hides an executable inside, and starts it when imported. The sandbox analysis shows only starting a calculator, which suggests it\u0027s a research attempt without a big harm.\n\n\n---\n\nCategory: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research \u0026 co, with clearly low-harm possibilities.\n\n\nCampaign: 2025-10-benign-lib\n\n\nReasons (based on the campaign):\n\n\n - malware\n\n\n - obfuscation\n",
  "id": "MAL-2025-191620",
  "modified": "2025-12-03T00:04:26Z",
  "published": "2025-10-25T15:44:07Z",
  "references": [
    {
      "type": "EVIDENCE",
      "url": "https://www.virustotal.com/gui/file/55d6a867c72897ad721d5b56d3c98dd37fdff119bc06458c45a6a90f05e71096/behavior"
    },
    {
      "type": "EVIDENCE",
      "url": "https://tria.ge/251025-s3e1cafs3c/behavioral2"
    },
    {
      "type": "WEB",
      "url": "https://bad-packages.kam193.eu/pypi/package/benign-lib"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in benign-lib (PyPI)"
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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