MAL-2026-13488

Dashboard / Malicious Package / MAL-2026-13488

MAL-2026-13488

Summary: Malicious code in idnna (PyPI)

Details: 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

References: https://www.virustotal.com/gui/file/425f5336182e359211b5d751786d2ce1d31a673ea9c82107358a888803742649/detection, https://bad-packages.kam193.eu/pypi/package/idnna, https://tria.ge/260807-fkycrazzg1/behavioral1, https://pypi.org/project/idnna/0.1.1/, https://pypi.org/project/idnna/0.2.0/, https://pypi.org/project/idnna/0.1.2/, https://pypi.org/project/idnna/0.3.0/