YARA is a pattern matching framework. It is used to identify and classify malware and other IT Security threats. It has a long standing history in the IT security landscape and has gotten support from a large list of global tech firms and leading cyber security vendors.
Yara rules – An Introduction
YARA is an effective means to search for any interesting patterns in multiple files, analyze them, and make informed decisions based on the results. As a result of this it is an essential part of network protection and endpoint security.
These rules are used to specify characteristics of a particular malware strain or classification of malware and then scans files or memory to determine if they have any of those malware indicators.
These rules can be compared to regex (regular expression) in the sense they use pattern matching. The main focus for regex is for text search and manipulation.
YARA rules, given they are designed for malware analysis and detection, can be used to match various features of a file, including its size, the type and its digital signature in addition to the text in it.
While looking similar to JSON, YARA rules are designed specifically to define pattern matching rules for malware analysis rather thing functioning as a data serialization format which is the use case for JSON.
These types of rules are built into malware scanners and are featured in a variety of IT security products such as EDR (Extended Detection & Response) IDS/IPS (Intrusion Detection & Prevention Systems), SIEM (Security Information & Event Management), and threat intelligence platforms.
YARA can also be integrated into custom developed tools and scripts for analyzing & detecting malware and other security threats.