mal-2026-2106
Vulnerability from ossf_malicious_packages
Published
2026-03-23 14:05
Modified
2026-03-23 20:18
Summary
Malicious code in dmclc (PyPI)
Details

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

Source: kam193 (895439e6afba407fb85d315e2c99f0d1434905a1ee72b172e62d55abbb8c93a3)

During installation, the package starts obfuscated code that downloads and runs remote executables in specific environments - in older packages - attempts to exfiltrate some basic information using DNS requests and then likely cover tracks by installing a similarly named package from private repository


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

Campaign: 2026-02-urllib-slim

Reasons (based on the campaign):

  • typosquatting

  • Downloads and executes a remote executable.

  • obfuscation

  • dependency-confusion

Credits

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "dmclc"
      },
      "versions": [
        "2.1.0",
        "2.1.1",
        "2.1.2",
        "2.1.3",
        "2.1.5",
        "2.1.6",
        "2.1.7",
        "2.1.9",
        "2.1.10"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "https://github.com/kam193",
        "https://bad-packages.kam193.eu/"
      ],
      "name": "Kamil Ma\u0144kowski (kam193)",
      "type": "REPORTER"
    }
  ],
  "database_specific": {
    "iocs": {
      "domains": [
        "1r.vc",
        "i.1r.vc"
      ],
      "urls": [
        "https://storage.googleapis.com/py-pi/python_mac",
        "https://storage.googleapis.com/py-pi/python_rhel",
        "https://storage.googleapis.com/py-pi/python_win"
      ]
    },
    "malicious-packages-origins": [
      {
        "id": "pypi/2026-02-urllib-slim/dmclc",
        "import_time": "2026-03-23T14:29:23.854372764Z",
        "modified_time": "2026-03-23T14:05:43.559439Z",
        "sha256": "895439e6afba407fb85d315e2c99f0d1434905a1ee72b172e62d55abbb8c93a3",
        "source": "kam193",
        "versions": [
          "2.1.0",
          "2.1.1",
          "2.1.2",
          "2.1.3",
          "2.1.5",
          "2.1.6",
          "2.1.7",
          "2.1.9",
          "2.1.10"
        ]
      },
      {
        "id": "pypi/2026-02-urllib-slim/dmclc",
        "import_time": "2026-03-23T14:52:56.133313105Z",
        "modified_time": "2026-03-23T14:05:43.559439Z",
        "sha256": "29d8ca432d1f2069462955be4a4ea77b5f7c8ee81ec568291be5b0ffce0aeebb",
        "source": "kam193",
        "versions": [
          "2.1.0",
          "2.1.1",
          "2.1.2",
          "2.1.3",
          "2.1.5",
          "2.1.6",
          "2.1.7",
          "2.1.9",
          "2.1.10"
        ]
      },
      {
        "id": "pypi/2026-02-urllib-slim/dmclc",
        "import_time": "2026-03-23T20:16:57.84615076Z",
        "modified_time": "2026-03-23T14:05:43.559439Z",
        "sha256": "98824533b2b8d26131cde65c6fee280bde414c4810f83d56b6b5f59fc7131df5",
        "source": "kam193",
        "versions": [
          "2.1.0",
          "2.1.1",
          "2.1.2",
          "2.1.3",
          "2.1.5",
          "2.1.6",
          "2.1.7",
          "2.1.9",
          "2.1.10"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (895439e6afba407fb85d315e2c99f0d1434905a1ee72b172e62d55abbb8c93a3)\nDuring installation, the package starts obfuscated code that downloads and runs remote executables in specific environments - in older packages - attempts to exfiltrate some basic information using DNS requests and then likely cover tracks by installing a similarly named package from private repository\n\n\n---\n\nCategory: MALICIOUS - The campaign has clearly malicious intent, like infostealers.\n\n\nCampaign: 2026-02-urllib-slim\n\n\nReasons (based on the campaign):\n\n\n - typosquatting\n\n\n - Downloads and executes a remote executable.\n\n\n - obfuscation\n\n\n - dependency-confusion\n",
  "id": "MAL-2026-2106",
  "modified": "2026-03-23T20:18:41Z",
  "published": "2026-03-23T14:05:43Z",
  "references": [
    {
      "type": "EVIDENCE",
      "url": "https://www.virustotal.com/gui/file/d6029cce705b3842042106efb737c8b14eb736fdbfb8d0d03c3dfbc8d6c207a5?nocache=1"
    },
    {
      "type": "WEB",
      "url": "https://bad-packages.kam193.eu/pypi/package/dmclc"
    },
    {
      "type": "WEB",
      "url": "https://github.com/loudpage5125"
    },
    {
      "type": "WEB",
      "url": "https://github.com/geekennedy/"
    },
    {
      "type": "WEB",
      "url": "https://github.com/GCLNS"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in dmclc (PyPI)"
}


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Sightings

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  • 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.
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  • 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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