mal-2026-1036
Vulnerability from ossf_malicious_packages
-= Per source details. Do not edit below this line.=-
Source: kam193 (ff0b75197d8e7cd361d61461260811fba8920c54b8538cb5f21ec2fc1c885ec3)
The package implements an undocumented way to execute code hidden in image files, and a function that searches for images in the current directory and attempts to execute the code.
It's used in the GitHub repository https://github.com/OR-6/PassCheck/blob/main/main.py#L190 to silently execute the command hidden in the image https://github.com/OR-6/PassCheck/blob/b09b3f1ec5d7345c614b1d956840ee2774f7131b/demo.png when the user interacts with the repository code. The decrypted command attempted to download and execute code from hxxps://or-6.github[.]io, which at the time of analysis didn't host any code.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-01-uitil
Reasons (based on the campaign):
-
typosquatting
-
steganography
-
The malicious code is intentionally included in a dependency of the package
-
action-hidden-in-lib-usage
-
The package contains code to execute remote commands (probably limited to a specific set) on the victim's machine.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "uitil"
},
"versions": [
"0.1.4",
"0.1.5"
]
}
],
"credits": [
{
"contact": [
"https://github.com/kam193",
"https://bad-packages.kam193.eu/"
],
"name": "Kamil Ma\u0144kowski (kam193)",
"type": "ANALYST"
},
{
"contact": [
"https://github.com/kam193",
"https://bad-packages.kam193.eu/"
],
"name": "Kamil Ma\u0144kowski (kam193)",
"type": "REPORTER"
}
],
"database_specific": {
"iocs": {
"domains": [
"or-6.github.io"
],
"urls": [
"https://github.com/OR-6/PassCheck/",
"https://or-6.github.io"
]
},
"malicious-packages-origins": [
{
"id": "pypi/2026-01-uitil/uitil",
"import_time": "2026-02-25T23:42:59.090660365Z",
"modified_time": "2026-01-16T21:32:25.526282Z",
"sha256": "ff0b75197d8e7cd361d61461260811fba8920c54b8538cb5f21ec2fc1c885ec3",
"source": "kam193",
"versions": [
"0.1.4",
"0.1.5"
]
},
{
"id": "pypi/2026-01-uitil/uitil",
"import_time": "2026-02-26T00:31:51.239635054Z",
"modified_time": "2026-01-16T21:32:25.526282Z",
"sha256": "243b442528547767d2f56c9ced8cb1b6791997d176602ecc4725194f684fdb05",
"source": "kam193",
"versions": [
"0.1.4",
"0.1.5"
]
}
]
},
"details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (ff0b75197d8e7cd361d61461260811fba8920c54b8538cb5f21ec2fc1c885ec3)\nThe package implements an undocumented way to execute code hidden in image files, and a function that searches for images in the current directory and attempts to execute the code. \n\nIt\u0027s used in the GitHub repository https://github.com/OR-6/PassCheck/blob/main/main.py#L190 to silently execute the command hidden in the image https://github.com/OR-6/PassCheck/blob/b09b3f1ec5d7345c614b1d956840ee2774f7131b/demo.png when the user interacts with the repository code. The decrypted command attempted to download and execute code from hxxps://or-6.github[.]io, which at the time of analysis didn\u0027t host any code.\n\n\n---\n\nCategory: MALICIOUS - The campaign has clearly malicious intent, like infostealers.\n\n\nCampaign: 2026-01-uitil\n\n\nReasons (based on the campaign):\n\n\n - typosquatting\n\n\n - steganography\n\n\n - The malicious code is intentionally included in a dependency of the package\n\n\n - action-hidden-in-lib-usage\n\n\n - The package contains code to execute remote commands (probably limited to a specific set) on the victim\u0027s machine.\n",
"id": "MAL-2026-1036",
"modified": "2026-02-26T00:33:40Z",
"published": "2026-01-16T21:32:25Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/OR-6/PassCheck/blob/main/main.py#L190"
},
{
"type": "WEB",
"url": "https://github.com/OR-6/PassCheck/blob/b09b3f1ec5d7345c614b1d956840ee2774f7131b/demo.png"
},
{
"type": "WEB",
"url": "https://bad-packages.kam193.eu/pypi/package/uitil"
}
],
"schema_version": "1.7.4",
"summary": "Malicious code in uitil (PyPI)"
}
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.