Malware

Malware Overview

Malware, short for malicious software, is any software intentionally designed to cause damage to a computer, server, client, or computer network. It includes various types of threats such as viruses, worms, trojan horses, ransomware, spyware, adware, and more.

Examples

C Code

```c

1. include <stdio.h>
2. include <stdlib.h>

int main() {

   FILE *fp;
   fp = fopen("malicious_file.txt", "w");
   if (fp == NULL) {
       printf("Error opening file!\n");
       return 1;
   }
   fprintf(fp, "This is a malicious file.\n");
   fclose(fp);
   system("del malicious_file.txt"); // Example of a destructive action
   return 0;

} ```

Python Code

```python import os

def create_malicious_file():

   with open("malicious_file.txt", "w") as f:
       f.write("This is a malicious file.\n")
   os.remove("malicious_file.txt")  # Example of a destructive action

create_malicious_file() ```

Rust Code

```rust use std::fs; use std::io::Write;

fn main() {

   let mut file = fs::File::create("malicious_file.txt").expect("Unable to create file");
   file.write_all(b"This is a malicious file.\n").expect("Unable to write data");
   fs::remove_file("malicious_file.txt").expect("Unable to delete file"); // Example of a destructive action

} ```

C# Code

```csharp using System; using System.IO;

class Program {

   static void Main()
   {
       string path = "malicious_file.txt";
       File.WriteAllText(path, "This is a malicious file.\n");
       File.Delete(path); // Example of a destructive action
   }

} ```