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Malicious package

synapseml-utilsPyPI

Malicious code in synapseml-utils (PyPI) Remove it immediately and rotate any exposed credentials.

MAL-2026-1325
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall synapseml-utils

What this malware does

Installing the package starts encrypting the user's file and demanding ransom for the decryption.

Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.

Campaign: 2026-03-synapseml-utils

Reasons (based on the campaign):

  • ransomware

Malicious versions

6 flagged
0.1.00.1.10.1.20.1.30.1.40.1.5

Indicators of compromise (SHA-256)

4ddf16f7a9941918ea74e21a3742e8f03d7b5c6f5720d7d031d2c69f8d6495c3

Detection & response playbook

Credential / info stealer
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for synapseml-utils (6 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging synapseml-utils across your stack and pipelines.

  2. If you installed it — respond

    synapseml-utils 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.

  3. Did it already run?

    If synapseml-utils 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.

  4. How O3 protects you

    O3 blocks synapseml-utils 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

No. synapseml-utils on PyPI has been identified as a malicious package (versions 0.1.0, 0.1.1, 0.1.2, 0.1.3, 0.1.4, 0.1.5 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2026-03-synapseml-utils

References

Credits

  • Kamil Mańkowski (kam193) · reporter

Detect & block this

O3 blocks synapseml-utils-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

synapseml-utils (PyPI) malicious package — MAL-2026-1325 | O3 Security