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Malicious package

@kyriba/mf-kitnpm

Malicious code in @kyriba/mf-kit (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-165
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall @kyriba/mf-kit

What this malware does

The package @kyriba/mf-kit was found to contain malicious code.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

The OpenSSF Package Analysis project identified '@kyriba/mf-kit' @ 1.0.3 (npm) as malicious.

It is considered malicious because:

  • The package communicates with a domain associated with malicious activity.

  • The package executes one or more commands associated with malicious behavior.

Malicious versions

1 flagged
1.0.3

Indicators of compromise (SHA-256)

c79fa513677c2f0d2cd3c56b216959c44395c65ef382d1fbdb86db6a6d0a8e16
fa1b2dd3479a677d975d11f8fe29e2cb24cbcc3a90c05081fa1632822c7c2f5a
5316d385b586e69d62f54165ad5c9a973bf0bdfc3ef7023a0f7f53c784bb7131

Detection & response playbook

Malicious package
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for @kyriba/mf-kit (version 1.0.3). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging @kyriba/mf-kit across your stack and pipelines.

  2. If you installed it — respond

    Remove @kyriba/mf-kit from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.

  3. Did it already run?

    If @kyriba/mf-kit 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 @kyriba/mf-kit 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. @kyriba/mf-kit on npm has been identified as a malicious package (version 1.0.3 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GHSA-vm49-whhj-p386

References

Credits

  • Amazon Inspector · finder
  • OpenSSF: Package Analysis · finder

Detect & block this

O3 blocks @kyriba/mf-kit-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

@kyriba/mf-kit (npm) malicious package — MAL-2026-165 | O3 Security