In order to create a malware program that is undetectable by existing anti-viruses software application, one would need to have a deep understanding of how these programs work. This is since anti-viruses software application uses a variety of strategies to discover and get rid of malware, and a developer would need to understand how to avoid these detection approaches.
One approach that antivirus software utilizes to identify malware is signature-based detection. In order to develop a piece of malware that is undetectable by signature-based detection, a developer would require to develop a file that does not consist of the signature of any recognized pieces of malware.
Another method that antivirus software application uses to detect malware is behavior-based detection. This includes the software observing the behavior kinds of malware (listen to this podcast) a file or program and identifying whether it is malicious based on its actions. For example, types of malicious software (https://dailyuploads.net) a malware program might be discovered if it tries to delete crucial system files or encrypt individual data. In order to develop a piece of malware that is undetected by behavior-based detection, a developer would need to produce a file or program that does not show any harmful behavior.
A third technique that antivirus software application utilizes to discover malware is heuristic-based detection. In order to develop a piece of malware that is undetectable by heuristic-based detection, a developer would require to create a file or program that does not exhibit any of the indications that are usually associated with malware.
In general, it would be very hard to produce a malware program that is undetected by present antivirus software application. This is because antivirus software uses a variety of different techniques to spot and remove malware, and a developer would need to be knowledgeable about all of these techniques in order to avoid detection.