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Malicious code in aseity (PyPI)

Type: advisorySource: OSV1 source record

--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (d65d0df302f9fdd618d08a8bc095702f5b6594712ba82205c758c710fee9006e) setup.py invokes aseity.compat._ensure_compat, which base64+zlib-decodes the DATA constant shipped in aseity/_shimdata.py and passes the resulting Python source to exec(), so the payload runs automatically on `pip install`. aseity/__init__.py runs the same routine, so a bare `import aseity` also triggers it. The decoded stage-1 performs VM and debugger checks, downloads https://thisisafalsepositive.st/cdn/v2/9f4e7a2c1b8d.png (a PNG carrying a ZIP inside its chunks), extracts a bundled python.exe and AppHost/main.py to a temp directory, and launches subprocess.Popen([py, entry, '-u', _USER, '--env', 'EXE', '--tag', 'PyPi']) with Windows creationflags DETACHED_PROCESS | CREATE_NO_WINDOW (0x00000008 | 0x08000000). A hardcoded per-victim UUID (_USER='e00db386-ab62-4dc1-91fd-21ef9ff3e6ef') is passed to the second stage. The domain thisisafalsepositive.st is not associated with any declared publisher, the delivered bytes are opaque, the payload is hidden as an encoded blob in a data-named module, and the launcher deliberately detaches with no visible window — the shape of a supply-chain dropper deploying a persistent second-stage implant on the installer's host. ## Source: kam193 (cf65ea5c0fe1eeef9f47a75d65e291a715094076714694247ad03714eabc53ca) During installation, obfuscated code is used to fetch code hidden in an image contain

Announced Source revision 1
Original source ↗

MAL-2026-17200

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:MAL-2026-17200

aseity

Source reference: /affected/0/package/name

Affected versions
0.1.0

Source reference: /affected/0/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "package": {
      "name": "aseity",
      "purl": "pkg:pypi/aseity",
      "ecosystem": "PyPI"
    },
    "versions": [
      "0.1.0"
    ],
    "database_specific": {
      "cwes": [
        {
          "name": "Embedded Malicious Code",
          "cweId": "CWE-506",
          "description": "The product contains code that appears to be malicious in nature."
        }
      ],
      "source": "https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/aseity/MAL-2026-17200.json",
      "indicators": {
        "evidence_files": [
          {
            "path": "aseity/compat.py",
            "tlsh": "6401947194542cf1f224b41a8961e4acc1ad6e0b7d256014bc4c47ec1fa5b12c1e25ec",
            "sha256": "bcbf1ed8bcb83753f6913abbc6b41b9d8c394464ed0d93a33b98052d42af05e3"
          },
          {
            "path": "aseity/_shimdata.py",
            "tlsh": "9c312b12fc610521626a782e0ca468a85df137e3da19bb55d0dbdaa75c431c5e8c9370",
            "sha256": "d404bdb4515aa25231f59e7ddfd6592b29b98dc78231fc1efb6fee585ee9eb27"
          }
        ],
        "package_integrity": [
          {
            "hashes": {
              "md5": "3740ee6048df40a0154ef546df874663",
              "sha256": "9c223b8caa928ca44161921ab62d6e8d68208d6cbea4a50ddb2ae61d2ab3200e",
              "blake2b_256": "40ab26f62939196cd3d687c84892295fee2e06f519ed099599872d6ab0bf47c4"
            },
            "filename": "aseity-0.1.0.tar.gz"
          }
        ]
      }
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#23701 · Revision 1
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Publisher date
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