Are there any open-source tools that can help detect MatrixTM MHddos activity?

While no single open-source tool specifically detects MatrixTM MHddos, several tools can help identify suspicious P2P activity and network anomalies that might indicate its presence. Tools like Suricata, Zeek (formerly Bro), and various intrusion detection systems (IDS) can be configured with custom rules to detect patterns associated with MHddos.