mal-2026-2299
Vulnerability from ossf_malicious_packages
Published
2026-03-30 12:02
Modified
2026-03-30 12:02
Summary
Malicious code in mnemoniclib (PyPI)
Details

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

Source: kam193 (c88fa4e30e2437fef5f03db434adb0f34ee48d8bec2d3361d123b10086b28772)

Clone of a legitimate library with added malicious code that runs during generating a new mnemonic. The malicious code collects data related to cryptocurrency wallets and selected other files, and exfiltrate them to a hardcoded location.


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

Campaign: 2026-03-mnemoniclib

Reasons (based on the campaign):

  • clones-real-package

  • action-hidden-in-lib-usage

  • crypto-related

  • exfiltration-crypto

  • files-exfiltration

Credits

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "mnemoniclib"
      },
      "versions": [
        "0.20.1",
        "0.21.1",
        "0.22.1"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "https://github.com/kam193",
        "https://bad-packages.kam193.eu/"
      ],
      "name": "Kamil Ma\u0144kowski (kam193)",
      "type": "REPORTER"
    }
  ],
  "database_specific": {
    "iocs": {
      "ips": [
        "65.21.205.84"
      ],
      "urls": [
        "http://65.21.205.84:5000/upload"
      ]
    },
    "malicious-packages-origins": [
      {
        "id": "pypi/2026-03-mnemoniclib/mnemoniclib",
        "import_time": "2026-03-30T12:50:52.341613423Z",
        "modified_time": "2026-03-30T12:02:35.616053Z",
        "sha256": "c88fa4e30e2437fef5f03db434adb0f34ee48d8bec2d3361d123b10086b28772",
        "source": "kam193",
        "versions": [
          "0.20.1",
          "0.21.1",
          "0.22.1"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (c88fa4e30e2437fef5f03db434adb0f34ee48d8bec2d3361d123b10086b28772)\nClone of a legitimate library with added malicious code that runs during generating a new mnemonic. The malicious code collects data related to cryptocurrency wallets and selected other files, and exfiltrate them to a hardcoded location.\n\n\n---\n\nCategory: MALICIOUS - The campaign has clearly malicious intent, like infostealers.\n\n\nCampaign: 2026-03-mnemoniclib\n\n\nReasons (based on the campaign):\n\n\n - clones-real-package\n\n\n - action-hidden-in-lib-usage\n\n\n - crypto-related\n\n\n - exfiltration-crypto\n\n\n - files-exfiltration\n",
  "id": "MAL-2026-2299",
  "modified": "2026-03-30T12:02:35Z",
  "published": "2026-03-30T12:02:35Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://bad-packages.kam193.eu/pypi/package/mnemoniclib"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in mnemoniclib (PyPI)"
}


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Sightings

Author Source Type Date

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.


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