mal-2025-191620
Vulnerability from ossf_malicious_packages
Published
2025-10-25 15:44
Modified
2025-12-03 00:04
Summary
Malicious code in benign-lib (PyPI)
Details
-= Per source details. Do not edit below this line.=-
Source: kam193 (09477b048d84611002417894ccb3265d246be0156b096a8b47776960d45e9d3d)
Package hides an executable inside, and starts it when imported. The sandbox analysis shows only starting a calculator, which suggests it's a research attempt without a big harm.
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: 2025-10-benign-lib
Reasons (based on the campaign):
-
malware
-
obfuscation
Credits
ReversingLabs
www.reversinglabs.com
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "benign-lib",
"purl": "pkg:pypi/benign-lib"
},
"versions": [
"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"
},
{
"contact": [
"https://www.reversinglabs.com"
],
"name": "ReversingLabs",
"type": "FINDER"
}
],
"database_specific": {
"malicious-packages-origins": [
{
"id": "RLMA-2025-05587",
"import_time": "2025-12-02T09:09:36.125262494Z",
"modified_time": "2025-12-01T12:54:05Z",
"sha256": "376aeae73b37815142b47e2fba740d180196b7e5f760475ae3333b3e87bc4d70",
"source": "reversing-labs",
"versions": [
"1.0.0"
]
},
{
"id": "pypi/2025-10-benign-lib/benign-lib",
"import_time": "2025-12-02T22:30:55.880575921Z",
"modified_time": "2025-10-25T15:44:07.884053Z",
"sha256": "dde05c4a0256dc32b25188e40f8bd2b4d3e3348cea23c0160994d46728c4c6bb",
"source": "kam193",
"versions": [
"1.0.0"
]
},
{
"id": "pypi/2025-10-benign-lib/benign-lib",
"import_time": "2025-12-02T23:07:19.063999962Z",
"modified_time": "2025-10-25T15:44:07.884053Z",
"sha256": "09477b048d84611002417894ccb3265d246be0156b096a8b47776960d45e9d3d",
"source": "kam193",
"versions": [
"1.0.0"
]
}
]
},
"details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (09477b048d84611002417894ccb3265d246be0156b096a8b47776960d45e9d3d)\nPackage hides an executable inside, and starts it when imported. The sandbox analysis shows only starting a calculator, which suggests it\u0027s a research attempt without a big harm.\n\n\n---\n\nCategory: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research \u0026 co, with clearly low-harm possibilities.\n\n\nCampaign: 2025-10-benign-lib\n\n\nReasons (based on the campaign):\n\n\n - malware\n\n\n - obfuscation\n",
"id": "MAL-2025-191620",
"modified": "2025-12-03T00:04:26Z",
"published": "2025-10-25T15:44:07Z",
"references": [
{
"type": "EVIDENCE",
"url": "https://www.virustotal.com/gui/file/55d6a867c72897ad721d5b56d3c98dd37fdff119bc06458c45a6a90f05e71096/behavior"
},
{
"type": "EVIDENCE",
"url": "https://tria.ge/251025-s3e1cafs3c/behavioral2"
},
{
"type": "WEB",
"url": "https://bad-packages.kam193.eu/pypi/package/benign-lib"
}
],
"schema_version": "1.7.4",
"summary": "Malicious code in benign-lib (PyPI)"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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