Added new tool for recording audio - ecasound #5385
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frack113
reviewed
Apr 27, 2025
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pre class="color-fg-muted ws-pre-wrap">Co-authored-by: frack113 <62423083+frack113@users.noreply.github.com>
Co-authored-by: frack113 <62423083+frack113@users.noreply.github.com>
phantinuss
approved these changes
May 21, 2025
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Summary of the Pull Request
The Audio Capture technique detects attempts to record audio using the arecord and ecasound utilities. These tools are commonly used in Linux environments for audio recording and sound manipulation. arecord is a command-line utility for recording audio via ALSA (Advanced Linux Sound Architecture), while ecasound is an audio processing tool that provides advanced features for multi-track recording. Detection rules are based on monitoring for specific execution commands or system calls that involve these utilities.
Changelog
Example Log Event
{ "type": "SYSCALL", "msg": "audit(1745697050.075:2344):", "arch": "c000003e", "syscall": 319, "success": "yes", "exit": 19, "a0": "7ffe5b4fdb40", "a1": 3, "a2": 0, "a3": 0, "items": 0, "ppid": 17756, "pid": 18259, "auid": 1000, "uid": 1000, "gid": 1000, "euid": 1000, "suid": 1000, "fsuid": 1000, "egid": 1000, "sgid": 1000, "fsgid": 1000, "tty": "pts3", "ses": 3, "comm": "ecasound", "exe": "/usr/bin/ecasound", "subj": "unconfined", "key": "anon_file_create" }Fixed Issues
SigmaHQ Rule Creation Conventions