MAL-2026-10441

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/turbocalcng/MAL-2026-10441.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-10441
Published
2026-07-13T09:00:16Z
Modified
2026-07-14T03:16:56.587503225Z
Summary
Malicious code in turbocalcng (PyPI)
Details

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

Source: amazon-inspector (58f668de627f83b0348d681edd090804f202add609fdc9a3c671f987608fb448)

turbocalcng/init.py imports arithmetic.py, which — beneath a facade of arithmetic helpers — contains an XOR-obfuscated in-memory native code execution path reachable at import time. A helper iReferringj(k,d) XOR-decodes byte lists into the strings 'base64', 'ctypes', 'mmap', 'threading', 'CFUNCTYPE', 'Thread', 'daemon', 'start', etc., and resolves them dynamically via getattr / import / importlib.util.specfromfile_location to hide the dangerous imports from static review. The reachable loader allocates an RWX region with mmap.mmap(-1, size, prot=7, flags=34), writes decoded bytes into it, casts the region's address through ctypes.CFUNCTYPE and invokes it inside a daemon threading.Thread — executing attacker-supplied native code in the installer's Python process on import turbocalcng. The obfuscation of core module names alongside the RWX + function-pointer-cast + thread-start primitive is characteristic of hostile shellcode injection, not any legitimate arithmetic functionality.

Source: kam193 (42db7e152a9be09d9e9dbd0db5242957ff335922fbc9cf430d406cff396a063f)

During import an obfuscated code starts in-memory functions from a binary blob; after that, it communicates with dockfinancial[.]lu, the exact behaviour is unknown.

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

Campaign: 2026-07-turbocalc

Reasons (based on the campaign):

  • obfuscation

  • other

Database specific 
{
    "iocs": {
        "domains": [
            "dockfinancial.lu"
        ]
    },
    "malicious-packages-origins": [
        {
            "versions": [
                "0.1.0",
                "0.2.0"
            ],
            "source": "kam193",
            "sha256": "42db7e152a9be09d9e9dbd0db5242957ff335922fbc9cf430d406cff396a063f",
            "id": "pypi/2026-07-turbocalc/turbocalcng",
            "import_time": "2026-07-13T10:37:41.546936583Z",
            "modified_time": "2026-07-13T09:40:53.974986Z"
        },
        {
            "versions": [
                "0.1.0"
            ],
            "source": "amazon-inspector",
            "sha256": "58f668de627f83b0348d681edd090804f202add609fdc9a3c671f987608fb448",
            "id": "IN-MAL-2026-010359",
            "modified_time": "2026-07-14T02:37:56Z",
            "import_time": "2026-07-14T03:07:05.650698477Z"
        }
    ]
}
References
Credits

Affected packages

PyPI / turbocalcng

Package

Name
turbocalcng
View open source insights on deps.dev
Purl
pkg:pypi/turbocalcng

Affected ranges

Affected versions

0.*
0.1.0
0.2.0

Database specific

indicators 
{
    "package_integrity": [
        {
            "filename": "turbocalcng-0.1.0-py3-none-any.whl",
            "hashes": {
                "md5": "0bf3d3fc28155f9f64832b81944be1bb",
                "sha256": "5c4da2179b66bfa628381a9ee02725240e85cc1cc983cfa2489e418c4f3441a4",
                "blake2b_256": "d32383254076cecfe83a1a2ad31ad41bd3d7e88f4870fb7fff36f34cdfb31a08"
            }
        },
        {
            "filename": "turbocalcng-0.1.0.tar.gz",
            "hashes": {
                "md5": "71c2f7efc05ce47bf17755baa1cc9642",
                "sha256": "351c616a6b6a43e2a457107725adc53c144c5b8caedafc4e185b5893bbe94b84",
                "blake2b_256": "b4f3d46549e35624ec62095ea8dbce0e1d819e3fe58eee16a2b821d699896f43"
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/turbocalcng/MAL-2026-10441.json"
cwes 
[
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506"
    }
]