Your RSA-2048 keys break in 2030. Find every one of them before attackers do.
Malicious package

binance.csharpNuGet

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

MAL-2025-191604
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
remove binance.csharp

Malicious versions

43 flagged
1.1.351.56.71.56.81.56.91.56.101.56.111.56.121.56.131.56.141.56.151.56.161.56.171.56.181.56.191.56.201.56.211.56.221.56.231.56.241.56.251.56.261.56.271.56.281.56.291.56.301.56.311.56.321.56.331.56.341.56.351.56.361.56.371.56.381.56.391.56.401.56.411.56.421.56.431.56.441.56.451.56.461.56.474.1.35

Indicators of compromise (SHA-256)

d5f0872222a51f6fa0c15b003fac6cf7d99c9f2db45572ddea7e875889bd6fed

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 binance.csharp (43 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging binance.csharp across your stack and pipelines.

  2. If you installed it — respond

    Remove binance.csharp 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 binance.csharp 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 binance.csharp 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. binance.csharp on NuGet has been identified as a malicious package (versions 1.1.35, 1.56.7, 1.56.8, 1.56.9, 1.56.10, 1.56.11, 1.56.12, 1.56.13, and 35 more flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-05571

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks binance.csharp-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.

binance.csharp (NuGet) malicious package — MAL-2025-191604 | O3 Security