mal-2025-6540
Vulnerability from ossf_malicious_packages
Published
2025-06-24 15:56
Modified
2025-12-11 09:27
Summary
Malicious code in mainx (PyPI)
Details

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

Source: kam193 (6a77aad2f42165ec9582f04fffab948f6a1125564e34f4d09c8d089b2708d8d2)

While described as educational package to simulate post-exploitation environment, the malware is active and once started, automatically attempts to exfiltrate sensitive data (credentials, cookies, etc.) and places a Discord implant. The remote target is hard coded in the code.

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

Campaign: 2025-06-mainx

Reasons (based on the campaign):

  • obfuscation

  • infostealer

  • files-exfiltration

  • exfiltration-credentials

  • exfiltration-browser-data

  • peristence-autorun

  • The package contains code to detect if it is running in a sandbox environment.

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

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "mainx",
        "purl": "pkg:pypi/mainx"
      },
      "versions": [
        "0.1",
        "0.4",
        "0.5",
        "0.6",
        "0.7",
        "0.8",
        "0.9",
        "1",
        "1.0"
      ]
    }
  ],
  "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-2025-03634",
        "import_time": "2025-08-01T10:07:12.360069312Z",
        "modified_time": "2025-07-31T19:15:35Z",
        "sha256": "c47485e969c40c9ce7c118d971f25ff7bbcf66f6d961a28ffa39d7bf497957d3",
        "source": "reversing-labs",
        "versions": [
          "0.1",
          "0.4",
          "0.5",
          "0.6",
          "0.7",
          "0.8",
          "0.9",
          "1"
        ]
      },
      {
        "id": "RLUA-2025-04194",
        "import_time": "2025-08-29T06:42:44.431005562Z",
        "modified_time": "2025-08-28T07:11:20Z",
        "sha256": "7f7a6cb96cd1bab4f33b465ea33076403d7c65d54b346d865a57eb11ee2fd712",
        "source": "reversing-labs"
      },
      {
        "id": "pypi/2025-06-mainx/mainx",
        "import_time": "2025-12-02T22:30:55.321256609Z",
        "modified_time": "2025-06-24T15:56:56Z",
        "ranges": [
          {
            "events": [
              {
                "introduced": "0"
              }
            ],
            "type": "ECOSYSTEM"
          }
        ],
        "sha256": "e24c50cb97b2294bf6202850b4bc869265cf991422d480d67db0e89f807fa45e",
        "source": "kam193"
      },
      {
        "id": "pypi/2025-06-mainx/mainx",
        "import_time": "2025-12-02T23:07:18.348686015Z",
        "modified_time": "2025-06-24T15:56:56Z",
        "ranges": [
          {
            "events": [
              {
                "introduced": "0"
              }
            ],
            "type": "ECOSYSTEM"
          }
        ],
        "sha256": "6a77aad2f42165ec9582f04fffab948f6a1125564e34f4d09c8d089b2708d8d2",
        "source": "kam193"
      },
      {
        "id": "pypi/2025-06-mainx/mainx",
        "import_time": "2025-12-10T21:38:57.581695761Z",
        "modified_time": "2025-06-24T15:56:56Z",
        "sha256": "6f37d98ee668c0690e6163289206307f8b89b3af36f23b6245eaa22b141110f7",
        "source": "kam193",
        "versions": [
          "0.1",
          "0.4",
          "0.5",
          "0.6",
          "0.7",
          "0.8",
          "0.9",
          "1.0"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (6a77aad2f42165ec9582f04fffab948f6a1125564e34f4d09c8d089b2708d8d2)\nWhile described as educational package to simulate post-exploitation environment, the malware is active and once started, automatically attempts to exfiltrate sensitive data (credentials, cookies, etc.) and places a Discord implant. The remote target is hard coded in the code.\n\n\n---\n\nCategory: MALICIOUS - The campaign has clearly malicious intent, like infostealers.\n\n\nCampaign: 2025-06-mainx\n\n\nReasons (based on the campaign):\n\n\n - obfuscation\n\n\n - infostealer\n\n\n - files-exfiltration\n\n\n - exfiltration-credentials\n\n\n - exfiltration-browser-data\n\n\n - peristence-autorun\n\n\n - The package contains code to detect if it is running in a sandbox environment.\n",
  "id": "MAL-2025-6540",
  "modified": "2025-12-11T09:27:53Z",
  "published": "2025-06-24T15:56:56Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://www.sonatype.com/blog/sonatype-uncovers-global-espionage-campaign-in-open-source-ecosystems"
    },
    {
      "type": "WEB",
      "url": "https://bad-packages.kam193.eu/pypi/package/mainx"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in mainx (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.
  • 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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