MAL-2025-191915

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/ultrafasttelethon/MAL-2025-191915.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2025-191915
Published
2025-04-04T12:54:50Z
Modified
2025-12-12T20:43:42.143576Z
Summary
Malicious code in ultrafasttelethon (PyPI)
Details

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

Source: kam193 (73a960b0cd2d21f8bde61f22f956a4c2a02ccddd9e1277eef23d3d8e0406cba4)

Clone of Telethon package that exfiltrates credentials. See client/telegrambaseclient.py L608-626 (exfiltration function) and client/auth.py L163 (usage).

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

Campaign: 2025-04-fastgram

Reasons (based on the campaign):

  • clones-real-package

  • action-hidden-in-lib-usage

  • exfiltration-generic

Database specific 
{
    "iocs": {
        "domains": [
            "a1091388.xsph.ru",
            "a1124634.xsph.ru"
        ]
    },
    "malicious-packages-origins": [
        {
            "id": "pypi/2025-04-fastgram/ultrafasttelethon",
            "modified_time": "2025-04-04T12:54:50Z",
            "import_time": "2025-12-02T22:30:55.689812488Z",
            "sha256": "2f2335d63eb797b5edb8c95d3c5c088e72acab99487bbea8294706207e379ad0",
            "ranges": [
                {
                    "type": "ECOSYSTEM",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ],
            "source": "kam193"
        },
        {
            "id": "pypi/2025-04-fastgram/ultrafasttelethon",
            "modified_time": "2025-04-04T12:54:50Z",
            "import_time": "2025-12-02T23:07:18.736046313Z",
            "sha256": "73a960b0cd2d21f8bde61f22f956a4c2a02ccddd9e1277eef23d3d8e0406cba4",
            "ranges": [
                {
                    "type": "ECOSYSTEM",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ],
            "source": "kam193"
        },
        {
            "versions": [
                "1.39.0",
                "1.39.0.1",
                "1.39.0.2",
                "1.39.0.3"
            ],
            "id": "pypi/2025-04-fastgram/ultrafasttelethon",
            "modified_time": "2025-04-04T12:54:50Z",
            "import_time": "2025-12-10T21:38:57.908035501Z",
            "sha256": "29602e2cd7f36a4d478bdcd0bb75c12f7c61a35d253b73bd36f9a1e6975adab2",
            "source": "kam193"
        }
    ]
}
References
Credits

Affected packages

PyPI / ultrafasttelethon

Package

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

Affected ranges

Affected versions

1.*
1.39.0
1.39.0.1
1.39.0.2
1.39.0.3

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/ultrafasttelethon/MAL-2025-191915.json"