mal-2026-13488
Vulnerability from ossf_malicious_packages
Published
2026-08-07 07:05
Modified
2026-08-07 12:25
Summary
Malicious code in idnna (PyPI)
Details
-= Per source details. Do not edit below this line.=-
Source: amazon-inspector (da6f2ec3b09fbcf061a9f4ffefe1c179983ad8cdc0af705f2218280ade3c1da3)
The package publishes under a name that closely resembles the widely-used idna package and advertises itself as 'HTTP client utilities', but the only importable module is djangoo containing a trivial hello() function. setup.py registers a custom install cmdclass (LinuxInstall) whose post-install step base64-decodes a hidden Python payload stored in _HOOK_B64 and executes it via exec(compile(...)). On Linux, the decoded payload uses urlretrieve to download an opaque binary named something from https://github.com/totti2188/8gp1Q7iZD3h4VW/releases/download/v1.3A/something — an unrelated personal GitHub account whose repository has no connection to the package's stated purpose — chmods it to 0o755, and spawns it detached via Popen. The download destination is not publisher-matched, the fetched artifact is unpinned by hash, and the payload is obfuscated to evade casual review. This fires automatically on pip install of the sdist.
Source: kam193 (c3caa6af02ad3844d721b93e94796fed92506f24517c3b990d741b147eee5acf)
Package imitates name of a popula library. During installation, obfuscated code downloads a malicious executable and starts it. It then exfiltrates at least cryptocurrency wallet data, probably more.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-08-flasq
Reasons (based on the campaign):
-
typosquatting
-
The package overrides the install command in setup.py to execute malicious code during installation.
-
exfiltration-generic
-
Downloads and executes a remote executable.
-
obfuscation
-
exfiltration-crypto
CWE
- CWE-506 - The product contains code that appears to be malicious in nature.
- CWE-506 - The product contains code that appears to be malicious in nature.
- CWE-506 - The product contains code that appears to be malicious in nature.
- CWE-506 - The product contains code that appears to be malicious in nature.
{
"affected": [
{
"database_specific": {
"cwes": [
{
"cweId": "CWE-506",
"description": "The product contains code that appears to be malicious in nature.",
"name": "Embedded Malicious Code"
},
{
"cweId": "CWE-506",
"description": "The product contains code that appears to be malicious in nature.",
"name": "Embedded Malicious Code"
},
{
"cweId": "CWE-506",
"description": "The product contains code that appears to be malicious in nature.",
"name": "Embedded Malicious Code"
},
{
"cweId": "CWE-506",
"description": "The product contains code that appears to be malicious in nature.",
"name": "Embedded Malicious Code"
}
],
"indicators": {
"evidence_files": [
{
"path": "setup.py",
"sha256": "1f73bbeef78e8cd5df29ed6ae14b72b10041b327c80d89f04d7db821cead4e6d",
"tlsh": "d521865b8e2510b06c18c7845843411f162baae1ac2074e4beed33642bcd249ca7f0d7"
}
],
"package_integrity": [
{
"filename": "idnna-0.1.1.tar.gz",
"hashes": {
"blake2b_256": "27f53dca917dfa8519f1bd08672a9b6b3a82cc047f7ac451ed2a325d77b9181d",
"md5": "5d403c75dc6bcec98d20110f0b24eea5",
"sha256": "3813650277e31545307c7c65a240f26e13de959bdd67db854fdc95debeed9eb1"
}
}
]
}
},
"package": {
"ecosystem": "PyPI",
"name": "idnna"
},
"versions": [
"0.1.1",
"0.1.2",
"0.2.0",
"0.3.0"
]
}
],
"credits": [
{
"contact": [
"inspector-research@amazon.com"
],
"name": "Amazon Inspector",
"type": "FINDER"
},
{
"contact": [
"https://github.com/kam193",
"https://bad-packages.kam193.eu/"
],
"name": "Kamil Ma\u0144kowski (kam193)",
"type": "REPORTER"
}
],
"database_specific": {
"iocs": {
"ips": [
"193.70.34.101"
],
"urls": [
"https://github.com/totti2188/8gp1Q7iZD3h4VW/releases/download/v1.3A/something"
]
},
"malicious-packages-origins": [
{
"id": "pypi/2026-08-flasq/idnna",
"import_time": "2026-08-07T07:35:19.074850456Z",
"modified_time": "2026-08-07T07:05:56.025428Z",
"sha256": "c3caa6af02ad3844d721b93e94796fed92506f24517c3b990d741b147eee5acf",
"source": "kam193",
"versions": [
"0.1.1",
"0.1.2",
"0.2.0",
"0.3.0"
]
},
{
"id": "pypi/2026-08-flasq/idnna",
"import_time": "2026-08-07T08:57:13.352632455Z",
"modified_time": "2026-08-07T07:05:56.025428Z",
"sha256": "9a15a7dcdc8b4d5a392976f6abb8ae4615189125f0c910703a3d96ade5bce5ad",
"source": "kam193",
"versions": [
"0.1.1",
"0.1.2",
"0.2.0",
"0.3.0"
]
},
{
"id": "IN-MAL-2026-016908",
"import_time": "2026-08-07T12:23:26.765397561Z",
"modified_time": "2026-08-07T12:16:04Z",
"sha256": "23ef36d00422f5968da72dbf01a4f9f6cea7adee00b4454956ba4dea8b13d020",
"source": "amazon-inspector",
"versions": [
"0.1.1"
]
},
{
"id": "IN-MAL-2026-016906",
"import_time": "2026-08-07T12:23:26.643627946Z",
"modified_time": "2026-08-07T12:15:47Z",
"sha256": "557fd8e5f5101a40c97cf36a05feb66d99c597290096922b08d5d3b9797ce4af",
"source": "amazon-inspector",
"versions": [
"0.2.0"
]
},
{
"id": "IN-MAL-2026-016903",
"import_time": "2026-08-07T12:23:26.513212497Z",
"modified_time": "2026-08-07T12:15:22Z",
"sha256": "c844cdd84d197bad25f5616870eb1d728b4ca22ded9ba1b0514a6620c0d31d7d",
"source": "amazon-inspector",
"versions": [
"0.1.2"
]
},
{
"id": "IN-MAL-2026-016907",
"import_time": "2026-08-07T12:23:26.730670293Z",
"modified_time": "2026-08-07T12:15:57Z",
"sha256": "da6f2ec3b09fbcf061a9f4ffefe1c179983ad8cdc0af705f2218280ade3c1da3",
"source": "amazon-inspector",
"versions": [
"0.3.0"
]
}
]
},
"details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (da6f2ec3b09fbcf061a9f4ffefe1c179983ad8cdc0af705f2218280ade3c1da3)\nThe package publishes under a name that closely resembles the widely-used `idna` package and advertises itself as \u0027HTTP client utilities\u0027, but the only importable module is `djangoo` containing a trivial `hello()` function. setup.py registers a custom `install` cmdclass (`LinuxInstall`) whose post-install step base64-decodes a hidden Python payload stored in `_HOOK_B64` and executes it via `exec(compile(...))`. On Linux, the decoded payload uses `urlretrieve` to download an opaque binary named `something` from https://github.com/totti2188/8gp1Q7iZD3h4VW/releases/download/v1.3A/something \u2014 an unrelated personal GitHub account whose repository has no connection to the package\u0027s stated purpose \u2014 chmods it to 0o755, and spawns it detached via `Popen`. The download destination is not publisher-matched, the fetched artifact is unpinned by hash, and the payload is obfuscated to evade casual review. This fires automatically on `pip install` of the sdist.\n\n## Source: kam193 (c3caa6af02ad3844d721b93e94796fed92506f24517c3b990d741b147eee5acf)\nPackage imitates name of a popula library. During installation, obfuscated code downloads a malicious executable and starts it. It then exfiltrates at least cryptocurrency wallet data, probably more.\n\n\n---\n\nCategory: MALICIOUS - The campaign has clearly malicious intent, like infostealers.\n\n\nCampaign: 2026-08-flasq\n\n\nReasons (based on the campaign):\n\n\n - typosquatting\n\n\n - The package overrides the install command in setup.py to execute malicious code during installation.\n\n\n - exfiltration-generic\n\n\n - Downloads and executes a remote executable.\n\n\n - obfuscation\n\n\n - exfiltration-crypto\n",
"id": "MAL-2026-13488",
"modified": "2026-08-07T12:25:23.112395952Z",
"published": "2026-08-07T07:05:56Z",
"references": [
{
"type": "EVIDENCE",
"url": "https://www.virustotal.com/gui/file/425f5336182e359211b5d751786d2ce1d31a673ea9c82107358a888803742649/detection"
},
{
"type": "WEB",
"url": "https://bad-packages.kam193.eu/pypi/package/idnna"
},
{
"type": "EVIDENCE",
"url": "https://tria.ge/260807-fkycrazzg1/behavioral1"
},
{
"type": "PACKAGE",
"url": "https://pypi.org/project/idnna/0.1.1/"
},
{
"type": "PACKAGE",
"url": "https://pypi.org/project/idnna/0.2.0/"
},
{
"type": "PACKAGE",
"url": "https://pypi.org/project/idnna/0.1.2/"
},
{
"type": "PACKAGE",
"url": "https://pypi.org/project/idnna/0.3.0/"
}
],
"schema_version": "1.7.4",
"summary": "Malicious code in idnna (PyPI)"
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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