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Malicious package

thisisthedaventestPyPI

Advisory published Updated

thisisthedaventest is a confirmed malicious PyPI package (MAL-2025-41780) that steals credentials and exfiltrates sensitive data (malicious version 99.99.99). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in thisisthedaventest (PyPI)

MAL-2025-41780
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall thisisthedaventest

What this malware does

Installing the package or importing the module exfiltrates basic information about the host, and the package has no other purpose.

Category: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research & co, with clearly low-harm possibilities.

Campaign: GENERIC-standard-pypi-install-pentest

Reasons (based on the campaign):

  • The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.

  • The package overrides the install command in setup.py to execute malicious code during installation.

Malicious versions

1 flagged
99.99.99

Indicators of compromise (SHA-256)

2eac14e0c5b6120dd7654d3243ac8340eb7028bd8389fb5d760e3331a774cc2b
437fd78095b480973972fcae0d7b224b838146558ce20c6ac47713dc37dfa972
c7f6701b95670bcfd620d23e4cc410957fb3cf0cc783ef0ab6d9f3ebe596ac8b
f16c797503d11dcc8a7737b93e3e58e1456433c09a5baf9fc064d8c6e99336dc
e5c62a8f30de5ed1d617650cfd68e43af674040e90cfc767ddf73a3115dc5b9c

Detection & response playbook

Credential / info stealer
  1. Find it

    Search your lockfiles and build artifacts for thisisthedaventest (version 99.99.99).

  2. If you installed it — respond

    thisisthedaventest is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

  3. Did it already run?

    If thisisthedaventest was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. thisisthedaventest on PyPI has been identified as a malicious package (version 99.99.99 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-04278GENERIC-standard-pypi-install-pentestRLUA-2026-00819

References

Credits

  • Kamil Mańkowski (kam193)
  • ReversingLabs · finder

Detect & block this

O3 blocks thisisthedaventest-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Explore

thisisthedaventest (PyPI) malicious package — MAL-2025-41780 | O3 Security