The victim would execute notepad2.exe and create a backdoor connection. This trick makes use only of Notepad and is surprisingly amazing. The final product notepad2.exe was produced by using notepad.exe as a template. Note:-Its not a full fledged ANTIVIRUS, its only the internal searching mechanism of any ANTIVIRUS. Here’s the coolest trick you may find useful when finding out whether or not you’ve got active and working antivirus software installed. To make you people understand the basics of ANTIVIRUS internal searching mechanism. The below written code is how an ANTIVIRUS works in actual or you can say its the algorithm(written in JAVA) Place the AntivirusAlgoInJava.java, defination.txt and your virus file in the same folder and then compile and run the java code from command line. Now create a virus definition using the identifiable characters along with there line numbers and save them in a text file, say defination.txtĬopy the below source code in file named AntivirusAlgoInJava.java.

Binary Code in Notepad ++ of File to be scanned

Create an antivirus using notepad