pypi · Malicious package advisory
Malwareidnna
MAL-2026-13488
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
Compromised versions (4)
- 0.1.1
- 0.1.2
- 0.2.0
- 0.3.0
Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.