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Malicious package

incaperrorPyPI

Malicious code in incaperror (PyPI) Remove it immediately and rotate any exposed credentials.

MAL-2025-41690
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall incaperror

What this malware does

Category: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research & co, with clearly low-harm possibilities.

Campaign: umbrella-campaign-oastify-on-install

Reasons (based on the campaign):

  • The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.

Malicious versions

1 flagged
7.0.0

Indicators of compromise (SHA-256)

3d0aa0a32562a00a2762cf0ff0258050e809d229acf9c09a6d634d0f292ff3b5
f5ab16d8e896a5abaaab938fb5ecd3f719951ed62d5025f1aa2f25e7336f8d00
35f38cf0821699586461d39581721c83cbeb67ee3e2001fecda0419e8b5adab5
c646c262d2896f5e7c09fa3d2ec2ef2f3f8f8a096770a5be3d004da57883897e
e0dfa35a65a6d6ca933360043c4d1c58103640ad6c97c2eca64992af42f3da26

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 incaperror (version 7.0.0). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging incaperror across your stack and pipelines.

  2. If you installed it — respond

    incaperror 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 incaperror 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 incaperror 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. incaperror on PyPI has been identified as a malicious package (version 7.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-04182umbrella-campaign-oastify-on-installRLUA-2026-00424

References

Credits

  • Kamil Mańkowski (kam193)
  • ReversingLabs · finder

Detect & block this

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

incaperror (PyPI) malicious package — MAL-2025-41690 | O3 Security