Narrator's Feedback-Hub Persistence

Hunt Hypothesis

Detects abusing Windows 10 Narrator’s Feedback-Hub

Detection Rule

Sigma (Original)

title: Narrator's Feedback-Hub Persistence
id: f663a6d9-9d1b-49b8-b2b1-0637914d199a
status: test
description: Detects abusing Windows 10 Narrator's Feedback-Hub
references:
    - https://giuliocomi.blogspot.com/2019/10/abusing-windows-10-narrators-feedback.html
author: Dmitriy Lifanov, oscd.community
date: 2019-10-25
modified: 2022-03-26
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.t1547.001
logsource:
    category: registry_event
    product: windows
detection:
    selection1:
        EventType: DeleteValue
        TargetObject|endswith: '\AppXypsaf9f1qserqevf0sws76dx4k9a5206\Shell\open\command\DelegateExecute'
    selection2:
        TargetObject|endswith: '\AppXypsaf9f1qserqevf0sws76dx4k9a5206\Shell\open\command\(Default)'
    # Add the payload in the (Default)
    condition: 1 of selection*
falsepositives:
    - Unknown
level: high

KQL (Azure Sentinel)

imRegistry
| where (EventType =~ "DeleteValue" and RegistryKey endswith "\\AppXypsaf9f1qserqevf0sws76dx4k9a5206\\Shell\\open\\command\\DelegateExecute") or RegistryKey endswith "\\AppXypsaf9f1qserqevf0sws76dx4k9a5206\\Shell\\open\\command\\(Default)"

KQL (Microsoft 365 Defender)

DeviceRegistryEvents
| where (ActionType =~ "DeleteValue" and RegistryKey endswith "\\AppXypsaf9f1qserqevf0sws76dx4k9a5206\\Shell\\open\\command\\DelegateExecute") or RegistryKey endswith "\\AppXypsaf9f1qserqevf0sws76dx4k9a5206\\Shell\\open\\command\\(Default)"

Required Data Sources

False Positive Guidance

• Unknown

MITRE ATT&CK Context

• Tactic: Privilege Escalation
• Tactic: Persistence
• Technique: T1547.001 — T1547.001

References

• https://giuliocomi.blogspot.com/2019/10/abusing-windows-10-narrators-feedback.html
• SigmaHQ Rule