// MITRE ATT&CK
T1568.003 · DNS Calculation
Sub-technique of T1568 · Dynamic Resolution.
Adversaries may perform calculations on addresses returned in DNS results to determine which port and IP address to use for command and control, rather than relying on a predetermined port number or the actual returned IP address. A IP and/or port number calculation can be used to bypass egress filt...
How to detect & mitigate it
Detecting DNS Calculation starts with your SIEM/EDR telemetry. Write a detection rule with the Sigma generator, analyze suspicious logs in the log analyzer, and place the technique on your coverage with the ATT&CK matrix.
Related techniques
T1132.001
Standard Encoding T1568.002
Domain Generation Algorithms T1071.004
DNS T1071.005
Publish/Subscribe Protocols T1573.001
Symmetric Cryptography T1568.001
Fast Flux DNS T1071
Application Layer Protocol T1219
Remote Access Tools
Standard Encoding T1568.002
Domain Generation Algorithms T1071.004
DNS T1071.005
Publish/Subscribe Protocols T1573.001
Symmetric Cryptography T1568.001
Fast Flux DNS T1071
Application Layer Protocol T1219
Remote Access Tools
Source: MITRE ATT&CK®. ATT&CK is a registered trademark of The MITRE Corporation. Content for educational purposes.