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Malicious package

BunifuNuGet

Malicious code in Bunifu (NuGet) Remove it immediately and rotate any exposed credentials.

MAL-2024-4378
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
remove Bunifu

Malicious versions

52 flagged
1.0.11.0.21.0.31.0.41.0.51.0.61.0.71.0.81.0.91.0.101.0.111.0.121.0.131.0.141.0.151.0.161.0.171.0.181.0.191.0.201.0.211.0.221.0.231.0.241.0.251.0.261.0.271.0.281.0.291.0.301.0.311.0.321.0.331.0.341.0.351.0.361.0.371.0.381.0.391.0.401.0.411.0.421.0.431.0.441.0.451.0.461.0.471.0.481.0.491.0.506.3.06.3.1

Indicators of compromise (SHA-256)

c0a42e44bfde0836856451afd543fd2cc3ecb23c0f482f98a11acc20c6daee04
93e88f44740f209f2c531cf2e7c85bceabe9fec608225c9a9e9f1f894b8eb9b8

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 Bunifu (52 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging Bunifu across your stack and pipelines.

  2. If you installed it — respond

    Remove Bunifu 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 Bunifu 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 Bunifu 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. Bunifu on NuGet has been identified as a malicious package (versions 1.0.1, 1.0.2, 1.0.3, 1.0.4, 1.0.5, 1.0.6, 1.0.7, 1.0.8, and 44 more flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2024-03207RLUA-2024-07640

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks Bunifu-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.

Bunifu (NuGet) malicious package — MAL-2024-4378 | O3 Security