Havoc C2 Configuration

Modern C++ post-exploitation framework setup

Havoc C2 Framework

Havoc is a modern, customizable post-exploitation framework designed by C5pider. Its primary agent, the Demon, is written in C++ and assembly, featuring state-of-the-art EDR evasion techniques.

Server & Client Setup

We host the Havoc Teamserver on a Debian server. The configuration file havoc.yaotl defines IP bindings and operators:

# Teamserver configuration snippet
[Teamserver]
Host = "0.0.0.0"
Port = 40056

[Operators]
"operator58" = "SecurePBKDF2PasswordHash"

To run the teamserver:

./havoc server --profile havoc.yaotl -v

Demon Agent Features & Customization

The Demon agent uses several stealth mechanisms to bypass detection:

  • Sleep Obfuscation: Uses Ekko or Z0ne memory protection techniques to encrypt its memory space during sleep, leaving it undetectable by scanner tools like Moneta or PE-Sieve.
  • System Calls: Uses direct or indirect syscalls dynamically resolved at runtime to bypass API hooks placed by EDRs on NTDLL functions (like NtAllocateVirtualMemory).
  • Payload Customization:
    • Implant type: Executable (EXE) or Dynamic Link Library (DLL).
    • Injection: Configured to use Custom Thread Start or Thread APC hijacking.

Configuring Listeners

We configure a secure HTTPS listener inside the Havoc GUI client console, specifying user agent parameters matching standard Chrome traffic to mask network communications.