
Summary
The rule named 'Large Volume of DNS ANY Queries' is designed to detect potential DNS amplification attacks by identifying an anomalous volume of DNS queries of type 'ANY.' Utilizing the Network_Resolution data model, it aggregates the count of 'ANY' queries directed to specific destinations. This behavior typically signifies an attempt to exploit the DNS infrastructure to overwhelm it, which can lead to Denial of Service (DoS) conditions. If the rule triggers, it suggests a distortion in normal DNS query patterns, which may indicate malicious activity that can degrade network performance and potentially contribute to Distributed Denial of Service (DDoS) attacks affecting critical services. The implementation requires proper data flow into the Network_Resolution data model, and the threshold count is adjustable based on typical volumes seen in the environment to minimize false positives from legitimate requests.
Categories
- Network
Data Sources
- Network Traffic
ATT&CK Techniques
- T1498
- T1498.002
Created: 2024-11-15