MAL-2025-47453 Malicious code in sisaws (PyPI)
Malicious package
Published
MAL-2025-47453 is a malicious package: sisaws (PyPI). Every version was published to cause harm.
Task:
1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.
2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.
3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.
4. If the package is not used anywhere, say so and change nothing.
Reference: https://insights.sbomify.com/MAL-2025-47453/ (Markdown: https://insights.sbomify.com/MAL-2025-47453/index.md)
- Package
- sisaws
- Registry
- PyPI
What is MAL-2025-47453?
MAL-2025-47453 is a malicious package in sisaws, published on 4 Aug 2025.
Official description
This package installs the SilentSync remote access trojan and allows remote code execution and data exfiltration. Windows machines are targetted by this malicious package.
Calling a method starts downloading and starting an infostealer script
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2025-08-secmeasure
Reasons (based on the campaign):
action-hidden-in-lib-usage
Downloads and executes a remote malicious script.
infostealer
What should I do about MAL-2025-47453?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.