MAL-2026-13732

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Import Source

https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/joule-btp-extension/MAL-2026-13732.json

JSON Data

https://api.osv.dev/v1/vulns/MAL-2026-13732

Published

2026-08-11T11:31:05Z

Modified

2026-08-11T20:41:39.927042202Z

Summary

Malicious code in joule-btp-extension (PyPI)

Details

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

Source: amazon-inspector (91439e7a69d936aa8a65b16561f48e9d9abab26fc8e3af4087da8d367cfd2210)

On pip install, setup.py runs a collectandexfiltrate() routine that reads /private/etc/passwd, /private/etc/hosts, and /private/etc/sudoers; captures selected environment variables (HOME, USER, LOGNAME, VIRTUALENV, PATH, PIPCACHEDIR, npmconfigprefix, GITEDITOR); recursively globs the installer's $HOME and current working directory and reads up to 4096 bytes of each file; and additionally invokes os.system("cat /private/etc/passwd"). The collected data is JSON-serialized and POSTed via urllib to a hardcoded ATTACKERURL (currently the placeholder http://127.0.0.1:4445/collect, with an author comment 'replace before deploying') using a spoofed 'User-Agent: pip/23.0' header to blend with pip traffic, and all exceptions are silently swallowed. setup.py also writes a marker file '.joule-btp-extension-was-here' into $VIRTUALENV/bin, demonstrating write access to the installer's virtualenv bin directory for persistence. The package's own docstring declares it a proof-of-concept sandbox-escape supply-chain attack targeting SAP Joule Desktop on macOS; the PoC framing does not change what the code does on install: it harvests installer files and identity data and beacons them off-host.

Source: kam193 (21a7a58b1f32893cafb7cd9a1b452c5e9138b8fa89c43ebef1b3722205f60596)

During installation, the code exfiltrates basic information and exfiltrates more information to a localhost service as well as starts a reverse shell there. It seems to be an internal test that was uploaded to a public repository.

Category: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research & co, with clearly low-harm possibilities.

Campaign: 2026-08-joule-btp-extension

Reasons (based on the campaign):

The package contains code to create a reverse shell, allowing an attacker to execute any commands on the victim's machine.
The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.

Source: ossf-package-analysis (65193272cd9bd3b918d955bb215650b6b89b171e458b3385819f989bc1128049)

The OpenSSF Package Analysis project identified 'joule-btp-extension' @ 0.1.6 (pypi) as malicious.

It is considered malicious because:

The package communicates with a domain associated with malicious activity.

Database specific

{
    "malicious-packages-origins": [
        {
            "import_time": "2026-08-11T11:49:10.274193773Z",
            "sha256": "65193272cd9bd3b918d955bb215650b6b89b171e458b3385819f989bc1128049",
            "modified_time": "2026-08-11T11:31:05Z",
            "source": "ossf-package-analysis",
            "versions": [
                "0.1.6"
            ]
        },
        {
            "id": "pypi/2026-08-joule-btp-extension/joule-btp-extension",
            "import_time": "2026-08-11T12:23:13.519846779Z",
            "sha256": "21a7a58b1f32893cafb7cd9a1b452c5e9138b8fa89c43ebef1b3722205f60596",
            "modified_time": "2026-08-11T12:01:52.311156Z",
            "source": "kam193",
            "versions": [
                "0.1.0",
                "0.1.1",
                "0.1.3",
                "0.1.4",
                "0.1.6"
            ]
        },
        {
            "id": "IN-MAL-2026-017357",
            "import_time": "2026-08-11T15:26:48.095927738Z",
            "sha256": "c4114daaef1171677fa1042ab30ea5104722c46e0fd9b7c71260b2dbeae61b8e",
            "modified_time": "2026-08-11T15:15:59Z",
            "source": "amazon-inspector",
            "versions": [
                "0.1.0"
            ]
        },
        {
            "id": "IN-MAL-2026-017358",
            "import_time": "2026-08-11T15:26:48.194385169Z",
            "sha256": "101702a7339ec70d8cec7d46df8650dbd393734e9b884e0c19118117a0491b1c",
            "versions": [
                "0.1.6"
            ],
            "source": "amazon-inspector",
            "modified_time": "2026-08-11T15:16:06Z"
        },
        {
            "id": "IN-MAL-2026-017373",
            "import_time": "2026-08-11T15:52:46.66516888Z",
            "sha256": "ed958edb4a9ec676c868ec6dee06a854bacfa7601cefa8ccaab72bca1badcf5f",
            "versions": [
                "0.1.3"
            ],
            "source": "amazon-inspector",
            "modified_time": "2026-08-11T15:43:39Z"
        },
        {
            "id": "IN-MAL-2026-017371",
            "import_time": "2026-08-11T15:52:46.447521533Z",
            "sha256": "63afca9a25a2f6e1d75ae3153d2f1b4e7a0d70649ce402e1cbe1e645478d99ba",
            "modified_time": "2026-08-11T15:31:29Z",
            "source": "amazon-inspector",
            "versions": [
                "0.1.4"
            ]
        },
        {
            "id": "IN-MAL-2026-017372",
            "import_time": "2026-08-11T15:52:46.565818241Z",
            "sha256": "91439e7a69d936aa8a65b16561f48e9d9abab26fc8e3af4087da8d367cfd2210",
            "modified_time": "2026-08-11T15:31:40Z",
            "source": "amazon-inspector",
            "versions": [
                "0.1.1"
            ]
        },
        {
            "import_time": "2026-08-11T19:53:29.927770172Z",
            "id": "pypi/2026-08-joule-btp-extension/joule-btp-extension",
            "sha256": "5bbf11309d88c0af577c0d50026c8829e8d43503ba900dd9eef1c76eea012697",
            "modified_time": "2026-08-11T12:01:52.311156Z",
            "source": "kam193",
            "versions": [
                "0.1.0",
                "0.1.1",
                "0.1.3",
                "0.1.4",
                "0.1.6"
            ]
        }
    ],
    "iocs": {
        "urls": [
            "https://42b1-2a02-2ad0-103-2841-51cc-a5b3-6bc2-68fe.ngrok-free.app/asd"
        ]
    }
}

References

Credits

- Amazon Inspector - FINDER
- - inspector-research@amazon.com
- Kamil Mańkowski (kam193) - REPORTER
- - https://github.com/kam193
  - https://bad-packages.kam193.eu/
- Kamil Mańkowski (kam193) - ANALYST
- - https://github.com/kam193
  - https://bad-packages.kam193.eu/
- OpenSSF: Package Analysis - FINDER
- - https://github.com/ossf/package-analysis
  - https://openssf.slack.com/channels/package_analysis

Affected packages

PyPI / joule-btp-extension

Package

Name: joule-btp-extension; View open source insights on deps.dev
Purl: pkg:pypi/joule-btp-extension

Affected ranges

Affected versions

0.*

0.1.0

0.1.1

0.1.3

0.1.4

0.1.6

Database specific

cwes

[
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506"
    },
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506"
    },
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506"
    },
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506"
    },
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506"
    }
]

indicators

{
    "evidence_files": [
        {
            "path": "setup.py",
            "tlsh": "daa1b915c9686a739193a368eb1be6c27b2071471a205c7c7afd835c1fca13580b66c9",
            "sha256": "a85bc51f0315ccf285a4405811b0e57f460e4855d6ea6d29da3e5749c8684ecb"
        }
    ],
    "package_integrity": [
        {
            "filename": "joule_btp_extension-0.1.0.tar.gz",
            "hashes": {
                "sha256": "955eb223b5b1a3b9d7273e12dfc1baed40f8e27b7f5ac332d9563caae4786b8b",
                "blake2b_256": "9cbf58989d079612f28d17ab246a4f932c93c164bec326f005d19468bf2f0854",
                "md5": "1a7c52ecb405f13fc7910761484fb79b"
            }
        }
    ]
}

source

"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/joule-btp-extension/MAL-2026-13732.json"