hello-test-s1PyPI
Malicious code in hello-test-s1 (PyPI) Remove it immediately and rotate any exposed credentials.
What this malware does
The package was found to contain malicious code or consuming dependency that contains malicious code
During installation or importing the module, the package starts a reverse shell to hardcoded locatiom
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2025-12-aiogram-sever-patch
Reasons (based on the campaign):
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The package contains code to create a reverse shell, allowing an attacker to execute any commands on the victim's machine.
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The package overrides the install command in setup.py to execute malicious code during installation.
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dependency-confusion
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for hello-test-s1 (3 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging hello-test-s1 across your stack and pipelines.
If you installed it — respond
hello-test-s1 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.
Did it already run?
If hello-test-s1 was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.
How O3 protects you
O3 blocks hello-test-s1 before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.
Frequently asked questions
Campaign
References
Credits
- Amazon Inspector · finder
- Kamil Mańkowski (kam193) · reporter
Detect & block this
O3 blocks hello-test-s1-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.