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How to Implement Antivirus and Anti malware in OMNeT++

To implement the antivirus and anti-malware functionalities in OMNeT++, we have to simulate environment that replicates the identification and managing software on networked devices. It can complet by simulating network traffic including capably malicious payloads and integrating modules that detect, quarantine, or remove these threats. Follow the step-by-step guide on how to implement antivirus and anti-malware features in OMNeT++ with examples.

Step-by-Step Implementation:

  1. Define the Network Topology

Stating a network topology that has numerous client, an antivirus server, and a database server for storing virus definitions. This setup will permits us to simulate the interaction amongst clients and the antivirus system.

network AntivirusNetwork

{

submodules:

client1: StandardHost {

@display(“p=100,100”);

}

client2: StandardHost {

@display(“p=100,200”);

}

router: Router {

@display(“p=300,150”);

}

antivirusServer: AntivirusServerModule {

@display(“p=500,150”);

}

dbServer: StandardHost {

@display(“p=700,150”);

}

connections:

client1.ethg++ <–> Eth100M <–> router.ethg++;

client2.ethg++ <–> Eth100M <–> router.ethg++;

router.ethg++ <–> Eth100M <–> antivirusServer.ethg++;

antivirusServer.ethg++ <–> Eth100M <–> dbServer.ethg++;

}

  1. Implement the Antivirus Server Module

The antivirus server module is accountable for scanning incoming network traffic for malicious content, comparing it against known virus signatures stored in a database, and taking proper actions like quarantining or deleting weak files.

Antivirus Server Module

// AntivirusServerModule.cc

#include <omnetpp.h>

#include “inet/common/INETDefs.h”

#include “inet/common/packet/Packet.h”

#include <string>

#include <vector>

#include <algorithm>

using namespace omnetpp;

using namespace inet;

class AntivirusServerModule : public cSimpleModule

{

protected:

std::vector<std::string> virusSignatures;

virtual void initialize() override;

virtual void handleMessage(cMessage *msg) override;

bool scanForMalware(Packet *packet);

void quarantineFile(Packet *packet);

void removeFile(Packet *packet);

};

Define_Module(AntivirusServerModule);

void AntivirusServerModule::initialize()

{

EV << “Antivirus Server Initialized” << endl;

// Load virus signatures (simulated)

virusSignatures.push_back(“malicious_code_1”);

virusSignatures.push_back(“malware_signature_A”);

virusSignatures.push_back(“virus_code_XYZ”);

}

void AntivirusServerModule::handleMessage(cMessage *msg)

{

if (Packet *packet = dynamic_cast<Packet *>(msg)) {

if (scanForMalware(packet)) {

EV << “Malware detected. Quarantining file…” << endl;

quarantineFile(packet);

} else {

EV << “No malware detected. Processing packet…” << endl;

send(packet, “out”);

}

}

}

bool AntivirusServerModule::scanForMalware(Packet *packet)

{

const auto& payload = packet->peekData();

std::string data(payload->str());

// Scan the packet data for known virus signatures

return std::any_of(virusSignatures.begin(), virusSignatures.end(),

[&data](const std::string& signature) {

return data.find(signature) != std::string::npos;

});

}

void AntivirusServerModule::quarantineFile(Packet *packet)

{

// Simulate quarantining the file

EV << “File quarantined: ” << packet->str() << endl;

delete packet; // For simulation, simply delete the packet to simulate quarantine

}

void AntivirusServerModule::removeFile(Packet *packet)

{

// Simulate removing the file

EV << “File removed: ” << packet->str() << endl;

delete packet;

}

  1. Implement Client-Side Antivirus Protection

Client devices should also have a module to replicate local antivirus protection. This module will scan files and network traffic before sending them to the server.

Client-Side Antivirus Module

// ClientAntivirusModule.cc

#include <omnetpp.h>

#include “inet/common/INETDefs.h”

#include “inet/common/packet/Packet.h”

#include <string>

#include <vector>

#include <algorithm>

using namespace omnetpp;

using namespace inet;

class ClientAntivirusModule : public cSimpleModule

{

protected:

std::vector<std::string> virusSignatures;

virtual void initialize() override;

virtual void handleMessage(cMessage *msg) override;

bool scanForMalware(Packet *packet);

void blockTransmission(Packet *packet);

};

Define_Module(ClientAntivirusModule);

void ClientAntivirusModule::initialize()

{

EV << “Client Antivirus Initialized” << endl;

// Load virus signatures (simulated)

virusSignatures.push_back(“malicious_code_1”);

virusSignatures.push_back(“malware_signature_A”);

virusSignatures.push_back(“virus_code_XYZ”);

}

void ClientAntivirusModule::handleMessage(cMessage *msg)

{

if (Packet *packet = dynamic_cast<Packet *>(msg)) {

if (scanForMalware(packet)) {

EV << “Malware detected on client. Blocking transmission…” << endl;

blockTransmission(packet);

} else {

EV << “No malware detected. Sending packet…” << endl;

send(packet, “out”);

}

}

}

bool ClientAntivirusModule::scanForMalware(Packet *packet)

{

const auto& payload = packet->peekData();

std::string data(payload->str());

 

// Scan the packet data for known virus signatures

return std::any_of(virusSignatures.begin(), virusSignatures.end(),

[&data](const std::string& signature) {

return data.find(signature) != std::string::npos;

});

}

void ClientAntivirusModule::blockTransmission(Packet *packet)

{

// Simulate blocking the transmission of the infected file

EV << “Transmission blocked: ” << packet->str() << endl;

delete packet; // For simulation, simply delete the packet to block transmission

}

  1. Integrate the Antivirus Modules

Simulate a system where both client-side and server-side antivirus protections are active by integrating the antivirus modules into the network.

network AntivirusNetwork

{

submodules:

client1: ClientAntivirusModule {

@display(“p=100,100”);

}

client2: ClientAntivirusModule {

@display(“p=100,200”);

}

router: Router {

@display(“p=300,150”);

}

antivirusServer: AntivirusServerModule {

@display(“p=500,150”);

}

dbServer: StandardHost {

@display(“p=700,150”);

}

connections:

client1.ethg++ <–> Eth100M <–> router.ethg++;

client2.ethg++ <–> Eth100M <–> router.ethg++;

router.ethg++ <–> Eth100M <–> antivirusServer.ethg++;

antivirusServer.ethg++ <–> Eth100M <–> dbServer.ethg++;

}

  1. Simulate Malware Detection and Response

Simulate difficult situations where the network traffic includes potentially malicious content and monitor how the antivirus systems respond.

Malware Simulation Module

// MalwareSimulationModule.cc

#include <omnetpp.h>

#include “inet/applications/tcpapp/TcpAppBase.h”

using namespace omnetpp;

using namespace inet;

class MalwareSimulationModule : public TcpAppBase

{

protected:

virtual void initialize(int stage) override;

virtual void handleMessageWhenUp(cMessage *msg) override;

void simulateMalwareTransmission();

};

Define_Module(MalwareSimulationModule);

void MalwareSimulationModule::initialize(int stage)

{

TcpAppBase::initialize(stage);

if (stage == inet::INITSTAGE_APPLICATION_LAYER) {

scheduleAt(simTime() + 3, new cMessage(“simulateMalwareTransmission”));

}

}

void MalwareSimulationModule::handleMessageWhenUp(cMessage *msg)

{

if (strcmp(msg->getName(), “simulateMalwareTransmission”) == 0) {

simulateMalwareTransmission();

delete msg;

} else {

TcpAppBase::handleMessageWhenUp(msg);

}

}

void MalwareSimulationModule::simulateMalwareTransmission()

{

EV << “Simulating malware transmission…” << endl;

sendRequest(“GET /infected_file HTTP/1.1\r\nHost: client1\r\n\r\nmalicious_code_1”);

}

  1. Run the Simulation

Compile and run the simulation in OMNeT++. The ClientAntivirusModule will scan outgoing packets for malware before they are transmitted, and the AntivirusServerModule will scan incoming packets before they are processed further.

  1. Analyze the Results

Check the OMNeT++ simulation log to see how the antivirus modules reacted to the simulated malware transmission. Verify that:

  • The client-side antivirus blocked the transmission of infected files.
  • The server-side antivirus quarantined or removed malicious files identified on the server.
  1. Extend the Antivirus Features

You can extend this setup by:

  • Implementing real-time scanning: Simulate real-time scanning of files being downloaded or uploaded to the network.
  • Enhancing detection techniques: Use more advanced pattern matching, heuristic analysis, or machine learning models to identify unknown malware.
  • Simulating updates to virus definitions: Accomplish a mechanism where the antivirus modules receive updates with new virus signatures.
  • Integrating with an incident response system: Simulate automated reacted to detected threats like notifying administrators or isolating infected devices.

At the end, this guide will walk you through the process of implementing Antivirus and Anti-malware in OMNeT++. For further queries or references, we can provide the required information.

Stay in touch with omnet-manual.com, we help you implement antivirus and anti-malware in the omnet++ tool, and we help you with networking comparison analysis. Connect with us for the best  project results.

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