How to Make Antivirus Software | A Full Step By Step Guide

When browsing the technical forums, you frequently see folks (many of whom have little knowledge) asking, “How do I develop an antivirus?” Antivirus can be a nightmare for developers. Let’s take the example of PHP, which is often used in web applications and blogs due to its simplicity. Because it doesn’t have any built-in features like Java does (to check if an app running on your website has been hacked or modified), you need to use third-party libraries that do this task for us – but are also prone to vulnerabilities themselves! So there are two things happening here. Let’s learn how to make antivirus software.

Firstly some malware will target one particular library found solely within these files just so they have access into our system; secondly whatever code gets bypassed by said virus ALSO triggers another signature file no bigger than 100 lines long located next door at precise coordinates “X”.

We’ve also seen a lot of “antivirus software” created by kids, with only a few people still in school and roughly 4 hours of coding per day for several weeks. Hey! We are not implying that children aren’t capable. But developing an antivirus engine necessitates many highly talented individuals working full-time and either a large amount of time or a large sum of money to compensate them (in case they are not volunteers).

As a result, we’ll go over the guidelines for basic antivirus writing in Windows and C/C++. Here you can discover advice on developing an antivirus engine or study how most of it works.

How to Make Antivirus Software

How To Make Antivirus Software

An antivirus needs at least one driver to execute code in the kernel. In general, have access to the kernel APIs to provide adequate protection. So, Microsoft noticed that the antivirus business needed keys to enter the kernel and activate filters in strategic locations, such as the file system, registry, and network, starting with Vista. Don’t be shocked if developing an antivirus for pre-Vista systems is a pain, given it wasn’t meant for it.

  • Antivirus firms employed rootkit-like capabilities in pre-Vista systems to defend doors (even though Microsoft didn’t encourage them) and protect your PC. They used “Hooks,” as we call them (API bypasses for filtering purposes).
  • Microsoft supplied APIs in Vista+ that allowed us to put our low-level driver between user-area calls and kernel APIs. 
  • So, it is simple to register an antiviral product in the kernel in this manner. Furthermore, a registry-based approach allows us to spread our system’s security across layers, allowing multiple products with different goals to coexist. Hooks, on the other hand, were completely product-dependent in their implementation.

The first line of defense for the user is to prevent launching harmful processes. This is the foundation.

PsSetCreateProcessNotifyRoutineEx must be registered by the antivirus. The antiviral callback is notified and receives all essential information when each process is created and before the main thread starts executing (and producing bad things).

It is given the process name, the file object, the PID, and other information. While the process is in progress, the driver can instruct its service to check the process memory for harmful code. If anything is found, the driver will return and set Creation Status to FALSE.

An Easy Way to Make Your Antivirus – Ultimate Tech DIY

How To Make Antivirus Software

The majority of people use AVG, Avast, and other well-known antivirus programs. The primary purpose of any antivirus program is to discover and remove unwanted or malicious files that can cause your computer to slow down.

Here’s a quick tip to assist you in creating your antivirus. So, this antivirus analyzes your entire computer and removes all malicious or unwanted files using the command prompt.

Steps To Make Your Antivirus

  • Step 1: Copy and then paste the following code into a new text document:
Install ScaryBugs
Find the data.csv file
Copy each model the system gives
When you have your winner, save it!
Give the commands and that’s it!


@echo off

Title OnlineCmag Antivirus

Echo OnlineCmag Antivirus

Echo created by its name

: start

IF EXISTS virus.bat go infected

IF NO virus.bat exists, go to clean up

Cd C: Windowssystem32




goto start

: Clean

Echo ¡Safe system!



(If this doen’s work, try this code)

@echo off

Color cb

Title OnlineCmag Antivirus


echo ===============

Echo [Batch-Master]

Echo ===============

Echo If there is no message, you are protected.

Set / pa = Enter a batch file to scan:

For / f %% x in (

‘findtr / i / m “virus rip byebye HaHaHa Hacked Hack”% a% .bat’

) do (

If / i %% x equals % a% .bat (

For / f %% z in (

‘findtr / i / i / b / m “tskill del copy shutdown ipconfig ren reg”% a% .bat’

) do (

if / i %% z equals % a% .bat (!

Virus detected

cls echo !!!

Del% a% .bat

Echo% a% .bat was removed by OnlineCmag antivirus ….

Pause> nul





Pause> null

  • Save this code as “OnlineCmag.bat” in Step 2. The extension “.bat” is required in this case.

=> Set Save as type: All files

=> Codification: ANSI

  • Step 3: Run the file you just saved: 

=> Enter the name of the batch file to scan.

Code Explanation Summary

Code Explanation Summary

According to studies, at least one data breach has impacted 64 percent of Americans. 1 Personal data, including Social Security numbers, birth dates, bank account numbers, and credit card numbers, is at risk. The data is then made available on the dark web, which can be utilized to wreck your finances. In reality, on the dark web, high-credit-score individuals’ personal information can be sold for a small fee.

Business cyber-attacks are extremely costly. In 2021, the costs of compromised records, attack mitigation, downtime and repairs, and other factors were $4.24 billion. 2 Installing the correct antivirus software at home or work is one step you can take to avoid becoming a statistic in the future.

Antivirus software has evolved to include Malware and other threat defense in addition to virus detection. It might be tough to select which antivirus software solution is ideal for you when there are hundreds to choose from.

We looked over 20 options that cybersecurity professionals advised about their preferred software, including antivirus, malware, and software ransomware. We also took into account features such as various device safeguards and free versions. Here are a few of our favorites.

You Don’t Need to Buy Antivirus Software.

But, in the end, trusting any application to secure your system, data, and privacy is a bad idea, especially because practically all antivirus software is vulnerable at times. No antivirus software, whether commercial or free, will be able to detect every harmful program that enters your computer.

Strong passwords, two-factor authentication, data encryption, system-wide backups, automated software updates, and smart privacy tools in your browser are also required. So, it would be best to be cautious about what you download, and wherever feasible, always download software from legitimate sites such as the Microsoft App Store and Apple Mac App Store.

Unless you know what you’re doing, you should avoid downloading and reading email attachments. See our complete guide on setting up all of these layers of security for more information.

Frequently Asked Questions

What Is the Difference Between Antivirus Software and Antimalware?

Viruses multiply and go over the whole place, whereas Malware is any malicious code that harms a computer or network.

Malware is not always a virus, and viruses are not always Malware. Antivirus software uses signature detection to identify threats, taking into account what they previously knew in the signature database. So, this is why antivirus software should be updated regularly.

More advanced malware attacks are detected by antimalware software. The two types of defensive software complement each other, and some AV software includes antimalware, but the two are distinct, and real protection requires protection against both.

How do antivirus software programs work?

Antivirus (AV) software detects, blocks, and removes dangerous Malware from a computer or network. Antivirus software is a recommended layer of any cybersecurity system since it is frequently the first line of defense in protecting the computer before dangerous Malware has a chance to become too entrenched. 

Is It Worth Paying for Antivirus Software?

Hackers don’t simply make money by selling your personal information. They may use that data to fraudulently buy products, ruin your credit score, deplete your bank account, and generally wreak havoc on your financial life and that of your business.

The very least you can do to protect yourself is install antivirus software on your PCs. Antivirus software, on average, thwarted up to 95 percent of threats between November 2019 and May 2020, according to research.

Viruses perform to exploit operating system flaws continue to infect Windows. Therefore, antivirus software is the first line of defense until they repair those flaws. Windows 10 is the first version of the operating system to incorporate its antivirus software.

Microsoft Defender is a decent free solution that provides basic security without requiring consumers to worry about it. However, if you require certain protections, the best alternative is to purchase a commercial version that fulfills your requirements.

How We Chose the Best Antivirus Software?

There are software options to choose from. We have over 20 unusual solutions that relate to the software of choice by cybersecurity professionals. The ease of use with all vendors was critical, as it had to be something that any consumer could navigate and use.

Next, we looked into whether the provider provided services other than antivirus software. So, Malware, ransomware, and multi-device protection were all included. They give priority to those who had a free or trial version. 

Do You Need Antivirus Software?

Free antivirus software has vastly improved over the years. So, anyone running Windows 10 already has free antivirus software that performs admirably. Free is good if all you want is software that detects harmful software. In addition, prevents it from causing harm and checks your system.

On the other hand, Paid versions will include web browsing security, identity protection, VPN services, password managers, and parental controls across various devices and OS systems. As more people work remotely or use a single device for business and personal computing, these are becoming more important.

Bottom line

We’ve found that Malware bytes is mostly unintrusive and can identify Malware that Windows Defender may have missed or Malware that has made its way onto a Mac, if you spend a lot of time in the sketchier corners of the Internet or if you think you’ve already downloaded malicious software that Windows Defender didn’t detect. 

For the most part, though, you will need to pay to get all the features.

So, Malware bytes can detect zero-day exploits that Windows Defender may miss. Therefore, the two products can operate well together when used in tandem (provided you set it up correctly).

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