T1123
Audio Capture
Linux · macOS · Windowsnothing on this site yetT1123 on attack.mitre.org
An adversary can leverage a computer's peripheral devices (e.g., microphones and webcams) or applications (e.g., voice and video call services) to capture audio recordings for the purpose of listening into sensitive conversations to gather information. Malware or scripts may be used to interact with the devices through an available API provided by the operating system or an application to capture audio.
If this is happening now
Checklists and playbooks to open while the alert is still live.
Playbook for this stage
Suspected data theft by an insider
A resignation with unusual file access, a DLP alert, or an unexplained large transfer.
how MITRE says to see it
Behavioral Detection Strategy for T1123 Audio Capture Across Windows, Linux, macOS
- Unusual or unauthorized processes accessing microphone APIs (e.g., winmm.dll, avrt.dll) followed by audio file writes to user-accessible or temp directories.
- Processes accessing ALSA/PulseAudio devices or executing audio capture binaries like 'arecord', followed by file creation or suspicious child process spawning.
- Processes invoking AVFoundation or CoreAudio frameworks, accessing input devices via TCC logs or Unified Logs, followed by writing AIFF/WAV/MP3 files to disk.