octopus32PyPI
Advisory published Updated
octopus32 is a confirmed malicious PyPI package (MAL-2025-5122) that steals credentials and exfiltrates sensitive data (malicious versions 0.1.0, 0.1.1). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in octopus32 (PyPI)
What this malware does
The obfuscated code downloads and starts a remote executable. The remote file has limited detection in VT, but contains at least code to add Defender exclusion paths.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2025-05-octopus32
Reasons (based on the campaign):
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Downloads and executes a remote executable.
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obfuscation
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for octopus32 (2 malicious versions).
If you installed it — respond
octopus32 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 octopus32 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
Campaign
References
Credits
- Kamil Mańkowski (kam193)
- ReversingLabs · finder
Detect & block this
O3 blocks octopus32-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.