Ransomware Defense Using the Wazuh Open Source Platform

Ransomware remains a major threat, with the article noting that it encrypts data to demand payment and may use double extortion to steal and publish sensitive information. According to Wazuh, a free and open source security platform, ransomware detection and response are supported through its unified XDR and SIEM capabilities, including malware and vulnerability detection, log data analysis, file integrity monitoring, and regulatory compliance monitoring.

The piece highlights concrete use cases, such as detecting DOGE Big Balls ransomware with CBD lists and specific rules that flag reconnaissance commands and ransom notes like readme.txt, and it describes automated responses that, when a match is found, can delete malicious files and log the action. It also covers Gunra ransomware where Wazuh’s FIM monitors the Downloads folder in real time and can trigger VirusTotal-scored scans with a custom active response to delete threats.

Additionally, the article describes Windows-focused protection, including VSS integration for snapshots to recover files before encryption, and notes that Wazuh can block ransomware activities via active response and integration with other security tools. Published on 4 November 2025, the piece emphasizes a multi-layered approach combining detection and rapid response to minimise data loss and downtime.