neutrl-contractsPyPI
neutrl-contracts is a confirmed malicious PyPI package (MAL-2026-13709) that steals credentials and exfiltrates sensitive data (malicious versions 2.0.0, 2.0.1, 2.0.2). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in neutrl-contracts (PyPI)
What this malware does
Review of neutrl-contracts 2.0.2 on PyPI did not surface any code paths that exfiltrate installer data, execute attacker-controlled payloads at install or import time, relay caller data to a hardcoded third-party destination, ship live third-party credentials, or establish a backdoor. No install-time network I/O, no lifecycle-hook shell execution, and no credential or filesystem reconnaissance were observed in the package's files.
This package intentionally depends on a malicious package.
This campaign exfiltrates sensitive environment variables, SSH keys, dotenv files and other credentials. The malicious code is hidden in a dependency package (e.g. neutrl-core) in a function disguised as telemetry, and requires activates once the attacker-controlled endpoint delivers the command. While the user can provide their blockchain endpoints, the code makes sure the malicious endpoint is always included in the configuration. In analyzed versions, the dependent packages did not use the malicious code but were clearly prepared for the supply chain attack.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-08-neutrl-core
Reasons (based on the campaign):
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files-exfiltration
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exfiltration-env-variables
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exfiltration-ssh-keys
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crypto-related
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action-hidden-in-lib-usage
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The malicious code is intentionally included in a dependency of the package
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exfiltration-crypto
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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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exfiltration-credentials
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 neutrl-contracts (3 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging neutrl-contracts across your stack and pipelines.
If you installed it — respond
neutrl-contracts 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 neutrl-contracts 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 neutrl-contracts 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 neutrl-contracts-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.