Suspicious Camera and Microphone Access

SIGMA detection rule by Den Iuzvyk · NOASSERTION

Detects Processes accessing the camera and microphone from suspicious folder

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

[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

7f97006f-ea19-4746-bea7-bcabc18af4d0

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Executable code, not a declarative rule

This submission is arbitrary [[ currentRule.format ? currentRule.format.toUpperCase() : '' ]] code, not a declarative detection rule — review it as you would any script before running it, and note that it cannot be safely aggregated or auto-executed alongside YARA/Sigma/Suricata/CRS rules.

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Not a security issue — this rule is valid and was accepted as-is. These are optional fields/conventions its own format recommends, mainly affecting its quality score and how well it documents itself for other reviewers.

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[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

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