MAL-2026-17757

    Dashboard / Malicious Package / MAL-2026-17757

    MAL-2026-17757

    Published: 10 Oct 2026Last Modified: 20 Oct 2026

    Summary: Malicious code in webreader (PyPI)

    Details: Source: kam193 (165632b7385ab993b6a8aa74c76ff55cc1ef55748c67b5dfabca284bc8ced087) In this campaign, the main package (webreader) has an embeded pickle disguised as a config. A related dependency (pafer) contains code to load the pickle. During unpickling, malicious code embeded in the pickle file is automatically executed. It then establishes persistence via a PTH file and downloads the next stage payload. It finally acts like a RAT, allowing remote exfiltration and code execution. Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers. Campaign: 2026-10-webreader Reasons (based on the campaign): - rat - Downloads and executes a remote malicious script. - obfuscation - The package contains code to execute remote commands (probably limited to a specific set) on the victim's machine. - abuses-pth - persistence - The malicious code is intentionally included in a dependency of the package - files-exfiltration

    References: https://bad-packages.kam193.eu/pypi/package/webreader

    Affected packages

    Package

    Name: webreader

    Purl: pkg:pypi/webreader

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    2.3.8