Vulnerability-Lookup

MAL-2026-14488

Vulnerability from ossf_malicious_packages

Published

2026-08-25 08:34

Modified

2026-08-25 08:34

Summary

Malicious code in python-walletlibr-v (PyPI)

Details

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

Source: amazon-inspector (6783cffec9c8f9377babacd1cb4490a278bace564b34861bf49b35258be7220c)

python-walletlibr-v is a wallet-lookalike PyPI package that ships no wallet functionality — only a stub hello() that prints 'Hello from my custom library!' and placeholder author metadata (author = 'Your Name'). Its setup.py registers a CustomInstall command that, on Windows at pip install time, writes a.bat file into %TEMP%, spawns a new cmd.exe console to execute it via subprocess.Popen(['cmd.exe','/k', bat_path], CREATE_NEW_CONSOLE), and calls os.system('calc'). Arbitrary local command execution fires automatically during pip install on Windows hosts, unrelated to any advertised functionality.

CWE

CWE-506 - The product contains code that appears to be malicious in nature.

Credits

Amazon Inspector inspector-research@amazon.com

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cwes": [
          {
            "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": "d0b7ed3487fb76de391846693737f7cd9b1a385d967854c5ca111ea2c06f5126",
              "tlsh": "6f2120028977097516b1036b0916cc06ffaea4a35775b28636fc4e349fba021060e93f"
            },
            {
              "path": "pycryptoshuffle/__init__.py",
              "sha256": "a9eed37934c714a36a35e6adea50014e0fad2d323d1628b1d8e4a92bbaa2c134",
              "tlsh": "25c09b450657155191dcc47f5500691179fd40b03fd55015573c311e79571555de524c"
            }
          ],
          "package_integrity": [
            {
              "filename": "python_walletlibr_v-0.7.9.tar.gz",
              "hashes": {
                "blake2b_256": "caf2051e75361d70d22f00732f27905e1223cb70ba0be6c6f831f8f191384905",
                "md5": "16935464ca0bc132b702dccd08a04b5a",
                "sha256": "7450765e50d74a4aed668e4159b58fa1b82a5d709bb6376fec84ed4776ecc6a5"
              }
            }
          ]
        }
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "python-walletlibr-v"
      },
      "versions": [
        "0.7.9"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "inspector-research@amazon.com"
      ],
      "name": "Amazon Inspector",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "IN-MAL-2026-018733",
        "import_time": "2026-08-25T08:49:18.077188637Z",
        "modified_time": "2026-08-25T08:34:01Z",
        "sha256": "6783cffec9c8f9377babacd1cb4490a278bace564b34861bf49b35258be7220c",
        "source": "amazon-inspector",
        "versions": [
          "0.7.9"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (6783cffec9c8f9377babacd1cb4490a278bace564b34861bf49b35258be7220c)\npython-walletlibr-v is a wallet-lookalike PyPI package that ships no wallet functionality \u2014 only a stub hello() that prints \u0027Hello from my custom library!\u0027 and placeholder author metadata (__author__ = \u0027Your Name\u0027). Its setup.py registers a CustomInstall command that, on Windows at pip install time, writes a.bat file into %TEMP%, spawns a new cmd.exe console to execute it via subprocess.Popen([\u0027cmd.exe\u0027,\u0027/k\u0027, bat_path], CREATE_NEW_CONSOLE), and calls os.system(\u0027calc\u0027). Arbitrary local command execution fires automatically during pip install on Windows hosts, unrelated to any advertised functionality.\n",
  "id": "MAL-2026-14488",
  "modified": "2026-08-25T08:34:01Z",
  "published": "2026-08-25T08:34:01Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/python-walletlibr-v/0.7.9/"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in python-walletlibr-v (PyPI)"
}

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.

Detection rules are retrieved from Rulezet.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.