mal-2026-3031
Vulnerability from ossf_malicious_packages
Published
2026-04-24 18:55
Modified
2026-04-24 18:55
Summary
Malicious code in swampo (PyPI)
Details

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

Source: kam193 (7b8e193e75e6ca7d387f21b53c251e6ee8791d9ec4ca3f37099e765415d36157)

Multi-stage dropper. The "analytics" functionality fetches fake updates information that should contain the next URL. From it, a yet another URL is downloaded, and then used to perform TXT DNS queries holding the encoded next URL. From this URL, a remote script is fetched and executed. During analysis, retrieving the final payload was not successful.


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

Campaign: 2026-04-swampo

Reasons (based on the campaign):

  • Downloads and executes a remote malicious script.

  • action-hidden-in-lib-usage

Credits

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "swampo"
      },
      "versions": [
        "1.2.9",
        "1.3.4",
        "1.3.5",
        "1.3.6",
        "1.3.7",
        "1.3.8",
        "1.3.9",
        "1.4.0",
        "1.4.1",
        "1.4.2",
        "1.5.0",
        "1.5.1",
        "1.5.2",
        "1.5.3",
        "1.5.4",
        "1.5.6",
        "1.5.7",
        "1.5.8",
        "1.7.0",
        "1.7.1"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "https://github.com/kam193",
        "https://bad-packages.kam193.eu/"
      ],
      "name": "Kamil Ma\u0144kowski (kam193)",
      "type": "REPORTER"
    }
  ],
  "database_specific": {
    "iocs": {
      "domains": [
        "swampo-update.vercel.app",
        "swampo-c2.vercel.app",
        "swampo-stage2.de-zahlung.info"
      ],
      "urls": [
        "https://swampo-update.vercel.app/v1/check",
        "https://swampo-c2.vercel.app/manifest",
        "https://api.counterapi.dev/v2/swampon/swampo/up"
      ]
    },
    "malicious-packages-origins": [
      {
        "id": "pypi/2026-04-swampo/swampo",
        "import_time": "2026-04-24T19:48:59.318564968Z",
        "modified_time": "2026-04-24T18:55:32.851161Z",
        "sha256": "7b8e193e75e6ca7d387f21b53c251e6ee8791d9ec4ca3f37099e765415d36157",
        "source": "kam193",
        "versions": [
          "1.2.9",
          "1.3.4",
          "1.3.5",
          "1.3.6",
          "1.3.7",
          "1.3.8",
          "1.3.9",
          "1.4.0",
          "1.4.1",
          "1.4.2",
          "1.5.0",
          "1.5.1",
          "1.5.2",
          "1.5.3",
          "1.5.4",
          "1.5.6",
          "1.5.7",
          "1.5.8",
          "1.7.0",
          "1.7.1"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (7b8e193e75e6ca7d387f21b53c251e6ee8791d9ec4ca3f37099e765415d36157)\nMulti-stage dropper. The \"analytics\" functionality fetches fake updates information that should contain the next URL. From it, a yet another URL is downloaded, and then used to perform TXT DNS queries holding the encoded next URL. From this URL, a remote script is fetched and executed. During analysis, retrieving the final payload was not successful.\n\n\n---\n\nCategory: MALICIOUS - The campaign has clearly malicious intent, like infostealers.\n\n\nCampaign: 2026-04-swampo\n\n\nReasons (based on the campaign):\n\n\n - Downloads and executes a remote malicious script.\n\n\n - action-hidden-in-lib-usage\n",
  "id": "MAL-2026-3031",
  "modified": "2026-04-24T18:55:32Z",
  "published": "2026-04-24T18:55:32Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://bad-packages.kam193.eu/pypi/package/swampo"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in swampo (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

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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.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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