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Malicious package

krisp-audioPyPI

Advisory published Updated

krisp-audio is a confirmed malicious PyPI package (MAL-2025-191643) that steals credentials and exfiltrates sensitive data (malicious versions 0.0.0, 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in krisp-audio (PyPI)

MAL-2025-191643
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall krisp-audio

What this malware does

Installing the package or importing the module exfiltrates basic information about the host, and the package has no other purpose.

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: GENERIC-standard-pypi-install-pentest

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.

  • The package overrides the install command in setup.py to execute malicious code during installation.

Malicious versions

2 flagged
0.0.01.0.0

Indicators of compromise (SHA-256)

645738abfcbd7a8e67f921ccc133aaf306bea38832f8effd55a379570aac8889
d0951a25e0000fc6bec3b366f80c003b6ee300acf67acfdedb4c6cc99db069cf
1940a2f9c0907fd633cc07fcc96fad89f2e4c55cbd38d5fe8df09d1c4048c906
e006d5a3b7d18be847d5708c763d2c2ef0dd97f43b74bbfe2b040ad0fc8df7d1
b88a36f67339ba5726ac683bafac242a18d2d91fd99d64e4ec494f6d8419867a

Detection & response playbook

Credential / info stealer
  1. Find it

    Search your lockfiles and build artifacts for krisp-audio (2 malicious versions).

  2. If you installed it — respond

    krisp-audio 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 krisp-audio 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

No. krisp-audio on PyPI has been identified as a malicious package (versions 0.0.0, 1.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-05614GENERIC-standard-pypi-install-pentestRLUA-2026-00460

References

Credits

  • Kamil Mańkowski (kam193)
  • ReversingLabs · finder

Detect & block this

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

Explore

krisp-audio (PyPI) malicious package — MAL-2025-191643 | O3 Security