MAL-2026-10977

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/lebinfmt/MAL-2026-10977.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-10977
Published
2026-07-21T08:23:35Z
Modified
2026-08-05T07:21:40.873124349Z
Summary
Malicious code in lebinfmt (PyPI)
Details

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

Source: amazon-inspector (9eaa5c1d1ed763b9e392bd199c360d75b25531b287de9f224e5626e121d649d4)

Analysis of lebinfmt 1.0.0 surfaced no behaviors matching supply-chain attack classes. No install-time or import-time network I/O, no credential or filesystem enumeration, no subprocess execution of fetched content, no lifecycle hooks performing sensitive actions, and no hardcoded external destinations were identified across the six files reviewed.

Source: kam193 (448ec8ad7c978d60f142f12780be3bb6ae7b90870fa4c2bf2d50ca7d4111cdfd)

This package is prepared to perform steganography decoding using the same code and was published on the same day as package 'rasterkit,' later used to deliver malicious payload.

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

Campaign: 2026-06-textwrap-toolkit-stager

Reasons (based on the campaign):

  • backdoor

  • obfuscation

  • crypto-related

  • Downloads and executes a remote malicious script.

  • exfiltration-crypto

Database specific 
{
    "iocs": {
        "urls": [
            "http://194.5.152.9:5555/report",
            "http://194.5.152.9:8080/hacks/textwrap-toolkit/textwrap_toolkit/__init__.py",
            "http://194.5.152.9:5555/tao"
        ],
        "ips": [
            "194.5.152.9"
        ]
    },
    "malicious-packages-origins": [
        {
            "versions": [
                "1.0.0"
            ],
            "modified_time": "2026-07-21T08:23:36.163081Z",
            "import_time": "2026-07-21T09:20:45.747853273Z",
            "source": "kam193",
            "sha256": "448ec8ad7c978d60f142f12780be3bb6ae7b90870fa4c2bf2d50ca7d4111cdfd",
            "id": "pypi/2026-06-textwrap-toolkit-stager/lebinfmt"
        },
        {
            "versions": [
                "1.0.0"
            ],
            "modified_time": "2026-08-05T06:12:15Z",
            "import_time": "2026-08-05T07:06:43.259654343Z",
            "source": "amazon-inspector",
            "sha256": "9eaa5c1d1ed763b9e392bd199c360d75b25531b287de9f224e5626e121d649d4",
            "id": "IN-MAL-2026-013361"
        }
    ]
}
References
Credits

Affected packages

PyPI / lebinfmt

Package

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

Affected ranges

Affected versions

1.*
1.0.0

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/lebinfmt/MAL-2026-10977.json"
cwes 
[
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    }
]
indicators 
{
    "package_integrity": [
        {
            "hashes": {
                "md5": "98aa03e96c6d0e83579cbf9bd67daacc",
                "blake2b_256": "e5cbfe201de714d847671e0d9b87ef1c786a19ca778ed290769205a184be485c",
                "sha256": "04f5bd7f9404b48fd87d434bc4d7b0e5266d48bde385c9d940fe69a09639d7e8"
            },
            "filename": "lebinfmt-1.0.0-py3-none-any.whl"
        }
    ]
}