MAL-2026-13487

    Dashboard / Malicious Package / MAL-2026-13487

    MAL-2026-13487

    Published: 7 Aug 2026Last Modified: 7 Aug 2026

    Summary: Malicious code in flasq (PyPI)

    Details: Source: amazon-inspector (79bdf17d9c07586ddc0b7121037c2c10019d7be01d2dd49685680a8e876342c6) setup.py registers a custom install cmdclass whose post-install hook is stored as a base64-encoded blob and decoded+exec'd at install time. On Linux, the decoded hook uses urllib.request.urlretrieve to download a binary from https://github.com/totti2188/8gp1Q7iZD3h4VW/releases/download/v1.3A/something, writes it to /tmp/something, chmods it 0755, and spawns it detached via subprocess.Popen(..., start_new_session=True). The download source is an unrelated personal GitHub account; there is no hash or signature verification; and the base64-obfuscation of an install-time code path is an evasion signal. The package advertises itself as 'HTTP client utilities' — this behavior is unrelated to that purpose. The setup.py also defaults the published PyPI name to 'requestss' (name=os.environ.get('PYPI_PACKAGE_NAME', 'requestss')), a one-character typosquat of the popular 'requests' package, indicating the artifact is intended to reach developers mistyping 'requests'. Source: kam193 (2498f9d207b216ad7438cd262c9136cc5453d288f97a74d4cd44a9a2accf9141) 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/flasq, https://tria.ge/260807-fkycrazzg1/behavioral1, https://pypi.org/project/flasq/0.1.2/, https://pypi.org/project/flasq/0.1.1/, https://pypi.org/project/flasq/0.2.0/, https://pypi.org/project/flasq/0.3.0/

    Affected packages

    Package

    Name: flasq

    Purl: pkg:pypi/flasq

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    0.1.1
    0.1.2