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This rule identifies clients with a high NXDomain count, which could be indicative of a DGA (cycling through possible C2 domains where most C2s are not live). An alert is generated when a new IP address is seen (based on not being seen associated with NXDomain records in prior 10-day baseline period). It utilizes ASIM normalization and is applied to any source that supports the ASIM DNS schema.
| Attribute | Value |
|---|---|
| Type | Analytic Rule |
| Solution | DNS Essentials |
| ID | 89ba52fa-96a7-4653-829a-ca49bb13336c |
| Severity | Medium |
| Status | Available |
| Kind | Scheduled |
| Tactics | CommandAndControl |
| Techniques | T1568, T1008 |
| Source | View on GitHub |
Browse: 🏠 · Solutions · Connectors · Methods · Tables · Content · Parsers · ASIM Parsers · ASIM Products · 📊