mal-2025-191723
Vulnerability from ossf_malicious_packages
Published
2025-04-04 12:54
Modified
2025-12-31 02:45
Summary
Malicious code in fastertelethon (PyPI)
Details
-= Per source details. Do not edit below this line.=-
Source: kam193 (3ccfc281c2541df7e1354e6de8c64624fdc75dcc229d33962b171b0a95087edf)
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
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "fastertelethon"
},
"versions": [
"1.0.5",
"1.0.0"
]
}
],
"credits": [
{
"contact": [
"https://github.com/kam193",
"https://bad-packages.kam193.eu/"
],
"name": "Kamil Ma\u0144kowski (kam193)"
},
{
"contact": [
"https://github.com/kam193",
"https://bad-packages.kam193.eu/"
],
"name": "Kamil Ma\u0144kowski (kam193)",
"type": "REPORTER"
}
],
"database_specific": {
"iocs": {
"domains": [
"a1091388.xsph.ru",
"a1124634.xsph.ru"
]
},
"malicious-packages-origins": [
{
"id": "pypi/2025-04-fastgram/fastertelethon",
"import_time": "2025-12-02T22:30:55.18520753Z",
"modified_time": "2025-04-04T12:54:50Z",
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"sha256": "b24babfe443100b225270a7cc7bff07ed10e39121be0694653ec59a91ef88a3b",
"source": "kam193"
},
{
"id": "pypi/2025-04-fastgram/fastertelethon",
"import_time": "2025-12-02T23:07:18.193739151Z",
"modified_time": "2025-04-04T12:54:50Z",
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"sha256": "3ccfc281c2541df7e1354e6de8c64624fdc75dcc229d33962b171b0a95087edf",
"source": "kam193"
},
{
"id": "pypi/2025-04-fastgram/fastertelethon",
"import_time": "2025-12-10T21:38:57.478070426Z",
"modified_time": "2025-04-04T12:54:50Z",
"sha256": "ca8244ca6a84b757f58716bc8bb3a219e381ba136bb9c637d29fc549f928cef6",
"source": "kam193",
"versions": [
"1.0.5",
"1.0.0"
]
},
{
"id": "pypi/2025-04-fastgram/fastertelethon",
"import_time": "2025-12-30T22:39:04.081852736Z",
"modified_time": "2025-04-04T12:54:50Z",
"sha256": "8ab64081fd1ef60d3b7ca9424cbe8653e1b3716d9fc8bb721919501ccef08714",
"source": "kam193",
"versions": [
"1.0.0",
"1.0.5"
]
}
]
},
"details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (3ccfc281c2541df7e1354e6de8c64624fdc75dcc229d33962b171b0a95087edf)\nClone of Telethon package that exfiltrates credentials. See client/telegrambaseclient.py L608-626 (exfiltration function) and client/auth.py L163 (usage).\n\n\n---\n\nCategory: MALICIOUS - The campaign has clearly malicious intent, like infostealers.\n\n\nCampaign: 2025-04-fastgram\n\n\nReasons (based on the campaign):\n\n\n - clones-real-package\n\n\n - action-hidden-in-lib-usage\n\n\n - exfiltration-generic\n",
"id": "MAL-2025-191723",
"modified": "2025-12-31T02:45:15Z",
"published": "2025-04-04T12:54:50Z",
"references": [
{
"type": "WEB",
"url": "https://bad-packages.kam193.eu/pypi/package/fastertelethon"
}
],
"schema_version": "1.7.4",
"summary": "Malicious code in fastertelethon (PyPI)"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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