Virus Definitions Heuristics, Behavioral Blocking, Sandbox, Data Mining

Virus Definitions Heuristics, Behavioral Blocking, Sandbox, Data Mining

1) Virus Definitions:

This is practically the first method of traditional antivirus software to identify malware. These programs rely on signatures to detect new malware. Provided that the company has already analyzed the proper signatures of the file and extracted and placed it in the database. Threats are compared to this database, and your device is protected when it matches the signature.

But while this approach prevents malware from spreading, cybercriminals try to stay one step ahead by writing new types of viruses that do not match the virus definition nor encrypt themselves and modify their code.


2) Heuristics:

Heuristic-based detection is used to detect malware in combination with virus definitions that base on known and modified malware.

Even without a modified malware definition, antivirus software is capable of detecting malware variants and adding them to quarantine.

Antivirus uses extensive signatures for this purpose and can detect malware with different fingerprints.

Another method of antivirus software files analysis in which it is seen that executables do not have instructions to change or delete certain files.

Regular software does not attempt to modify or delete important system software and therefore this action can be considered malicious behavior and should, therefore, be considered as a malware.


3) Behavioral Blocking:

Behavior detection is a signature-free approach to detecting malware that helps build a complete context around all process executable paths in real-time.

Suspicious behavior includes unpacking malicious code, modifying host files, or tracking strokes. Such an action allows an antivirus program to detect malware previously unseen on the system.


4) About sandbox

In a general way, a sandbox is an isolated computing environment in which a program or file can be executed without affecting any application in which it runs.

The best way to detect unknown threats is to allow these files to be executed in a secure, virtual environment. In this sandbox, attention is paid to this execution and the malicious activity is detected in it.

Once the malicious activity is detected, the signature is created so that it can be immediately blocked the next time such an attack occurs.

Besides, it is recommended to automatically update the IP blacklist in a firewall or proxy.


5) Data Mining:

This is one of the latest methods to detect malware that security vendors have now provided with their antivirus and anti-malware products.

With a set of program features, data mining helps to know whether programs are malicious or not.

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