Malware Detection Using Yara Rules in SIEM

Abstract

In this cyber world, working from the office to the home, security has never been more challenging. To detect attacks on the host computers and prevent further malicious activities, host intrusion detection systems (HIDS) are often used. Use of open-source SEIM tool Wazuh for monitoring and combines with YARA for file analysis. YARA rules are like those of a programming language that operates by specifying variables that indicate patterns identified in malware, depending on the rule. If any or all the conditions are satisfied, it can be used to effectively identify at least a portion of malware that defines variable parameters. YARA rules help SIEM operators analyse the file tag for malware detection before using it to its full potential. In this chapter, we are going to learn and implement malware analysis using Wazuh, and YARA rules before infecting the system fully. A flexible and effective method for detecting malware in system logs, network traffic, and other data sources is produced by combining WAZUH and YARA rules. By utilising the advantages of YARA rules and the sophisticated features of WAZUH, security teams can quickly identify malware attacks and respond to them. This lessens the effect on their business. A modern cybersecurity strategy must contain WAZUH SIEM and YARA rules. With YARA rules, security teams may spot malware attacks in WAZUH and take appropriate action to maintain the security and integrity of their organization's data and systems.