title: OpenCanary - SIP Request
id: e30de276-68ec-435c-ab99-ef3befec6c61
status: test
description: Detects instances where an SIP service on an OpenCanary node has had a SIP request.
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Security Onion Solutions
date: 2024-03-08
tags:
    - attack.collection
    - attack.t1123
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 15001
    condition: selection
falsepositives:
    - Unlikely
level: high

title: Suspicious Camera and Microphone Access
id: 62120148-6b7a-42be-8b91-271c04e281a3
status: test
description: Detects Processes accessing the camera and microphone from suspicious folder
references:
    - https://medium.com/@7a616368/can-you-track-processes-accessing-the-camera-and-microphone-7e6885b37072
author: Den Iuzvyk
date: 2020-06-07
modified: 2022-10-09
tags:
    - attack.collection
    - attack.t1125
    - attack.t1123
logsource:
    category: registry_event
    product: windows
detection:
    selection_1:
        TargetObject|contains|all:
            - '\Software\Microsoft\Windows\CurrentVersion\CapabilityAccessManager\ConsentStore\'
            - '\NonPackaged'
    selection_2:
        TargetObject|contains:
            - microphone
            - webcam
    selection_3:
        TargetObject|contains:
            - ':#Windows#Temp#'
            - ':#$Recycle.bin#'
            - ':#Temp#'
            - ':#Users#Public#'
            - ':#Users#Default#'
            - ':#Users#Desktop#'
    condition: all of selection_*
falsepositives:
    - Unlikely, there could be conferencing software running from a Temp folder accessing the devices
level: high

title: Audio Capture via PowerShell
id: 932fb0d8-692b-4b0f-a26e-5643a50fe7d6
status: test
description: Detects audio capture via PowerShell Cmdlet.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1123/T1123.md
    - https://eqllib.readthedocs.io/en/latest/analytics/ab7a6ef4-0983-4275-a4f1-5c6bd3c31c23.html
    - https://github.com/frgnca/AudioDeviceCmdlets
author: E.M. Anhaus (originally from Atomic Blue Detections, Endgame), oscd.community, Nasreddine Bencherchali (Nextron Systems)
date: 2019-10-24
modified: 2023-04-06
tags:
    - attack.collection
    - attack.t1123
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains:
            - 'WindowsAudioDevice-Powershell-Cmdlet'
            - 'Toggle-AudioDevice'
            - 'Get-AudioDevice '
            - 'Set-AudioDevice '
            - 'Write-AudioDevice '
    condition: selection
falsepositives:
    - Legitimate audio capture by legitimate user.
level: medium

title: Audio Capture via SoundRecorder
id: 83865853-59aa-449e-9600-74b9d89a6d6e
status: test
description: Detect attacker collecting audio via SoundRecorder application.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1123/T1123.md
    - https://eqllib.readthedocs.io/en/latest/analytics/f72a98cb-7b3d-4100-99c3-a138b6e9ff6e.html
author: E.M. Anhaus (originally from Atomic Blue Detections, Endgame), oscd.community
date: 2019-10-24
modified: 2021-11-27
tags:
    - attack.collection
    - attack.t1123
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith: '\SoundRecorder.exe'
        CommandLine|contains: '/FILE'
    condition: selection
falsepositives:
    - Legitimate audio capture by legitimate user.
level: medium

title: Processes Accessing the Microphone and Webcam
id: 8cd538a4-62d5-4e83-810b-12d41e428d6e
status: test
description: Potential adversaries accessing the microphone and webcam in an endpoint.
references:
    - https://twitter.com/duzvik/status/1269671601852813320
    - https://medium.com/@7a616368/can-you-track-processes-accessing-the-camera-and-microphone-7e6885b37072
author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)
date: 2020-06-07
modified: 2021-11-27
tags:
    - attack.collection
    - attack.t1123
logsource:
    product: windows
    service: security
detection:
    selection:
        EventID:
            - 4657
            - 4656
            - 4663
        ObjectName|contains:
            - '\SOFTWARE\Microsoft\Windows\CurrentVersion\CapabilityAccessManager\ConsentStore\microphone\NonPackaged'
            - '\SOFTWARE\Microsoft\Windows\CurrentVersion\CapabilityAccessManager\ConsentStore\webcam\NonPackaged'
    condition: selection
falsepositives:
    - Unknown
level: medium

title: Audio Capture
id: a7af2487-9c2f-42e4-9bb9-ff961f0561d5
status: test
description: Detects attempts to record audio using the arecord and ecasound utilities.
references:
    - https://linux.die.net/man/1/arecord
    - https://linuxconfig.org/how-to-test-microphone-with-audio-linux-sound-architecture-alsa
    - https://manpages.debian.org/unstable/ecasound/ecasound.1.en.html
    - https://ecasound.seul.org/ecasound/Documentation/examples.html#fconversions
author: Pawel Mazur, Milad Cheraghi
date: 2021-09-04
modified: 2025-12-05
tags:
    - attack.collection
    - attack.t1123
logsource:
    product: linux
    service: auditd
detection:
    selection_execve:
        type: EXECVE
        a0: arecord
        a1: '-vv'
        a2: '-fdat'
    selection_syscall_memfd_create:
        type: SYSCALL
        exe|endswith: "/ecasound"
        SYSCALL: 'memfd_create'
    condition: 1 of selection_*
falsepositives:
    - Unknown
level: low