py-wormPyPI
Advisory published Updated
py-worm is a confirmed malicious PyPI package (MAL-2026-17883) that steals credentials and exfiltrates sensitive data (malicious versions 0.1.0, 2.0.0, 2.0.1). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in py-worm (PyPI)
What this malware does
The package installs a persistent job that allows the attacker for exfiltrating files and executing remote code on the victim's machine.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-10-agentaix
Reasons (based on the campaign):
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files-exfiltration
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peristence-autorun
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The package contains code to execute remote commands (probably limited to a specific set) on the victim's machine.
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rat
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persistence
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Downloads and executes a remote malicious script.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for py-worm (3 malicious versions).
If you installed it — respond
py-worm 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 py-worm 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) · reporter
Detect & block this
O3 blocks py-worm-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.