mal-2026-10977
Vulnerability from ossf_malicious_packages
Published
2026-07-21 08:23
Modified
2026-07-21 08:23
Summary
Malicious code in lebinfmt (PyPI)
Details

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

Source: kam193 (448ec8ad7c978d60f142f12780be3bb6ae7b90870fa4c2bf2d50ca7d4111cdfd)

This package is prepared to perform steganography decoding using the same code and was published on the same day as package 'rasterkit,' later used to deliver malicious payload.

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

Campaign: 2026-06-textwrap-toolkit-stager

Reasons (based on the campaign):

  • backdoor

  • obfuscation

  • crypto-related

  • Downloads and executes a remote malicious script.

  • exfiltration-crypto

Credits
Kamil Mańkowski (kam193) github.com/kam193 bad-packages.kam193.eu/
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "lebinfmt"
      },
      "versions": [
        "1.0.0"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "https://github.com/kam193",
        "https://bad-packages.kam193.eu/"
      ],
      "name": "Kamil Ma\u0144kowski (kam193)",
      "type": "REPORTER"
    }
  ],
  "database_specific": {
    "iocs": {
      "ips": [
        "194.5.152.9"
      ],
      "urls": [
        "http://194.5.152.9:5555/report",
        "http://194.5.152.9:8080/hacks/textwrap-toolkit/textwrap_toolkit/__init__.py",
        "http://194.5.152.9:5555/tao"
      ]
    },
    "malicious-packages-origins": [
      {
        "id": "pypi/2026-06-textwrap-toolkit-stager/lebinfmt",
        "import_time": "2026-07-21T09:20:45.747853273Z",
        "modified_time": "2026-07-21T08:23:36.163081Z",
        "sha256": "448ec8ad7c978d60f142f12780be3bb6ae7b90870fa4c2bf2d50ca7d4111cdfd",
        "source": "kam193",
        "versions": [
          "1.0.0"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (448ec8ad7c978d60f142f12780be3bb6ae7b90870fa4c2bf2d50ca7d4111cdfd)\nThis package is prepared to perform steganography decoding using the same code and was published on the same day as package \u0027rasterkit,\u0027 later used to deliver malicious payload.\n\n\n---\n\nCategory: MALICIOUS - The campaign has clearly malicious intent, like infostealers.\n\n\nCampaign: 2026-06-textwrap-toolkit-stager\n\n\nReasons (based on the campaign):\n\n\n - backdoor\n\n\n - obfuscation\n\n\n - crypto-related\n\n\n - Downloads and executes a remote malicious script.\n\n\n - exfiltration-crypto\n",
  "id": "MAL-2026-10977",
  "modified": "2026-07-21T08:23:36Z",
  "published": "2026-07-21T08:23:35Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://bad-packages.kam193.eu/pypi/package/lebinfmt"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in lebinfmt (PyPI)"
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.