MAL-2025-191701

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/chimera-sandbox-extensions/MAL-2025-191701.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2025-191701
Published
2025-06-09T09:48:52Z
Modified
2025-12-12T20:33:16.204153Z
Summary
Malicious code in chimera-sandbox-extensions (PyPI)
Details

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

Source: kam193 (9b87170278a2bed3680592ca4efa2d402a56ee044fcfea4b95831e545431a794)

When started, the code attempts to access multiple domains based on the generating algorithm. Once one valid is found, it downloads a script and executes it. The script collects data about the environment (e.g. attempts to get cloud tokens from the metadata URLs, collects some env variables) and sends them further to the remote target, which then decides about next stage code.

It may be targetting https://engineering.grab.com/chimera-sandbox

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

Campaign: 2025-06-chimera-sandbox-extensions

Reasons (based on the campaign):

  • The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.

  • Downloads and executes a remote malicious script.

Database specific 
{
    "malicious-packages-origins": [
        {
            "sha256": "df3188f671b86c3449c0c8f84297a3e7d9cd3ce78ea1bca164a406af9fa61075",
            "source": "kam193",
            "import_time": "2025-12-02T22:30:55.042168732Z",
            "id": "pypi/2025-06-chimera-sandbox-extensions/chimera-sandbox-extensions",
            "modified_time": "2025-06-09T09:48:52Z",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "ECOSYSTEM"
                }
            ]
        },
        {
            "sha256": "9b87170278a2bed3680592ca4efa2d402a56ee044fcfea4b95831e545431a794",
            "source": "kam193",
            "import_time": "2025-12-02T23:07:18.05066485Z",
            "id": "pypi/2025-06-chimera-sandbox-extensions/chimera-sandbox-extensions",
            "modified_time": "2025-06-09T09:48:52Z",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "ECOSYSTEM"
                }
            ]
        },
        {
            "modified_time": "2025-06-09T09:48:52Z",
            "source": "kam193",
            "import_time": "2025-12-10T21:38:57.341498442Z",
            "id": "pypi/2025-06-chimera-sandbox-extensions/chimera-sandbox-extensions",
            "versions": [
                "0.1.42"
            ],
            "sha256": "1e89ffb6c4a4ddf1f4b57a300ca231b1e805f3f61c27c2c581b8be6a9c156df5"
        }
    ],
    "iocs": {
        "domains": [
            "chimerasandbox.workers.dev"
        ]
    }
}
References
Credits

Affected packages

PyPI / chimera-sandbox-extensions

Package

Name
chimera-sandbox-extensions
View open source insights on deps.dev
Purl
pkg:pypi/chimera-sandbox-extensions

Affected ranges

Affected versions

0.*
0.1.42

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/chimera-sandbox-extensions/MAL-2025-191701.json"