Potential Persistence Via Mpnotify

Hunt Hypothesis

Detects when an attacker register a new SIP provider for persistence and defense evasion

Detection Rule

Sigma (Original)

title: Potential Persistence Via Mpnotify
id: 92772523-d9c1-4c93-9547-b0ca500baba3
status: test
description: Detects when an attacker register a new SIP provider for persistence and defense evasion
references:
    - https://persistence-info.github.io/Data/mpnotify.html
    - https://www.youtube.com/watch?v=ggY3srD9dYs&ab_channel=GrzegorzTworek
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-07-21
modified: 2023-08-17
tags:
    - attack.persistence
logsource:
    category: registry_set
    product: windows
detection:
    selection:
        TargetObject|contains: '\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\mpnotify'
    condition: selection
falsepositives:
    - Might trigger if a legitimate new SIP provider is registered. But this is not a common occurrence in an environment and should be investigated either way
level: high

KQL (Azure Sentinel)

imRegistry
| where RegistryKey contains "\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Winlogon\\mpnotify"

KQL (Microsoft 365 Defender)

DeviceRegistryEvents
| where RegistryKey contains "\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Winlogon\\mpnotify"

Required Data Sources

False Positive Guidance

• Might trigger if a legitimate new SIP provider is registered. But this is not a common occurrence in an environment and should be investigated either way

MITRE ATT&CK Context

• Tactic: Persistence

References

• https://persistence-info.github.io/Data/mpnotify.html
• https://www.youtube.com/watch?v=ggY3srD9dYs&ab_channel=GrzegorzTworek
• SigmaHQ Rule