Audio Capture via SoundRecorder

Hunt Hypothesis

Detect attacker collecting audio via SoundRecorder application.

Detection Rule

Sigma (Original)

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

KQL (Azure Sentinel)

imProcessCreate
| where TargetProcessName endswith "\\SoundRecorder.exe" and TargetProcessCommandLine contains "/FILE"

Required Data Sources

False Positive Guidance

• Legitimate audio capture by legitimate user.

MITRE ATT&CK Context

• Tactic: Collection
• Technique: T1123 — T1123

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
• SigmaHQ Rule