MAL-2026-2293 Malicious code in thisismytestnouser (PyPI)
Malicious package
Published
MAL-2026-2293 is a malicious package: thisismytestnouser (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-2026-2293/ (Markdown: https://insights.sbomify.com/MAL-2026-2293/index.md)
- Package
- thisismytestnouser
- Registry
- PyPI
What is MAL-2026-2293?
MAL-2026-2293 is a malicious package in thisismytestnouser, published on 29 Mar 2026.
Official description
During installation, if run under a specific username, the package downloads and installs two executables identified as backdoors trojans.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-03-thisismytest123
Reasons (based on the campaign):
Downloads and executes a remote executable.
backdoor
malware
What should I do about MAL-2026-2293?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.