// MITRE ATT&CK
T1102.002 · Bidirectional Communication
Sub-technique of T1102 · Web Service.
Adversaries may use an existing, legitimate external Web service as a means for sending commands to and receiving output from a compromised system over the Web service channel. Compromised systems may leverage popular websites and social media to host command and control (C2) instructions. Those inf...
How to detect & mitigate it
Detecting Bidirectional Communication 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.