captcha-solve-apiPyPI
Malicious code in captcha-solve-api (PyPI) Remove it immediately and rotate any exposed credentials.
What this malware does
The package advertises itself as a REST client for a captcha-solving API, but the shipped captcha_solve_api module is a ~20-line stub. The tarball's real payload is two top-level modules (_telemetry_init, _telemetry_transport, ~117 KB) installed as global site modules together with a telemetry.pth file copied into site-packages by a custom install command. The.pth contains import _telemetry_init, which Python auto-executes on every interpreter start — independent of whether captcha_solve_api is ever imported. _telemetry_init spawns a daemon thread that instantiates _telemetry_transport.Client and calls initialize()/track(). The runtime collects host identifiers (platform.node() hostname, cpu_count, OS/arch, Python version, session identifiers) and POSTs JSON envelopes to /api/envelope on a destination host that is not hardcoded: a ServiceDiscovery class issues DNS TXT queries to 8.8.8.8 and 1.1.1.1 and base64-decodes concatenated TXT chunks to reconstruct the endpoint, allowing the operator to rotate destinations after install and evade domain/IP allowlists. Author metadata is a generic placeholder ('Platform Engineering') and the DSN docstring uses [email protected]. The 'telemetry'/'analytics SDK' framing does not match the advertised captcha-solving purpose and is not part of the captcha_solve_api namespace.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for captcha-solve-api (version 0.0.1). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging captcha-solve-api across your stack and pipelines.
If you installed it — respond
Remove captcha-solve-api from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.
Did it already run?
If captcha-solve-api 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 captcha-solve-api 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
Detect & block this
O3 blocks captcha-solve-api-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.