mal-2026-5094
Vulnerability from ossf_malicious_packages
Published
2026-05-31 02:13
Modified
2026-05-31 02:13
Summary
Malicious code in hell-cipher (PyPI)
Details

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

Source: kam193 (e852860302b982f58123434d6c8671299f6b8e45e8f57c8149ab3380eb91fa63)

During installation, the code tamper with security settings and downloads and executes malicious executable.


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

Campaign: 2026-05-cryptolock

Reasons (based on the campaign):

  • The package overrides the install command in setup.py to execute malicious code during installation.

  • Downloads and executes a remote executable.

  • malware

Credits

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "hell-cipher"
      },
      "versions": [
        "1.0.1"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "https://github.com/kam193",
        "https://bad-packages.kam193.eu/"
      ],
      "name": "Kamil Ma\u0144kowski (kam193)",
      "type": "REPORTER"
    }
  ],
  "database_specific": {
    "iocs": {
      "urls": [
        "https://github.com/seIfrighteous/x/releases/download/selfrighteous/setup.exe",
        "https://tmpfiles.org/dl/wVwFfznUQdRr/main.exe",
        "https://github.com/seIfrighteous/x/releases/download/selfrighteous/NisSrv.exe",
        "https://github.com/seIfrighteous/x/releases/download/selfrighteous/MpClient.dll"
      ]
    },
    "malicious-packages-origins": [
      {
        "id": "pypi/2026-05-cryptolock/hell-cipher",
        "import_time": "2026-05-31T03:15:08.087340755Z",
        "modified_time": "2026-05-31T02:13:34.957987Z",
        "sha256": "e852860302b982f58123434d6c8671299f6b8e45e8f57c8149ab3380eb91fa63",
        "source": "kam193",
        "versions": [
          "1.0.1"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (e852860302b982f58123434d6c8671299f6b8e45e8f57c8149ab3380eb91fa63)\nDuring installation, the code tamper with security settings and downloads and executes malicious executable.\n\n\n---\n\nCategory: MALICIOUS - The campaign has clearly malicious intent, like infostealers.\n\n\nCampaign: 2026-05-cryptolock\n\n\nReasons (based on the campaign):\n\n\n - The package overrides the install command in setup.py to execute malicious code during installation.\n\n\n - Downloads and executes a remote executable.\n\n\n - malware\n",
  "id": "MAL-2026-5094",
  "modified": "2026-05-31T02:13:34Z",
  "published": "2026-05-31T02:13:34Z",
  "references": [
    {
      "type": "EVIDENCE",
      "url": "https://www.virustotal.com/gui/file/0912542c6e3a6b747a5bb30de22c1b79ead35c5a9a6813dcd8a6056cc312b892/detection"
    },
    {
      "type": "WEB",
      "url": "https://bad-packages.kam193.eu/pypi/package/hell-cipher"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in hell-cipher (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.

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Detection rules are retrieved from Rulezet.

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