Registry Hide Function from User

Hunt Hypothesis

Ad

Detection Rule

Sigma (Original)

title: Registry Hide Function from User
id: 5a93eb65-dffa-4543-b761-94aa60098fb6
status: test
description: Detects registry modifications that hide internal tools or functions from the user (malware like Agent Tesla, Hermetic Wiper uses this technique)
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1564.001/T1564.001.md
author: frack113
date: 2022-03-18
modified: 2023-08-17
tags:
    - attack.persistence
    - attack.defense-impairment
    - attack.t1112
logsource:
    category: registry_set
    product: windows
detection:
    selection_set_1:
        TargetObject|endswith:
            - 'SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\HideClock'
            - 'SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\HideSCAHealth'
            - 'SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\HideSCANetwork'
            - 'SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\HideSCAPower'
            - 'SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\HideSCAVolume'
        Details: 'DWORD (0x00000001)'
    selection_set_0:
        TargetObject|endswith:
            - 'SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowInfoTip'
            - 'SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowCompColor'
        Details: 'DWORD (0x00000000)'
    condition: 1 of selection_set_*
falsepositives:
    - Legitimate admin script
level: medium

KQL (Azure Sentinel)

imRegistry
| where ((RegistryKey endswith "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer\\HideClock" or RegistryKey endswith "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer\\HideSCAHealth" or RegistryKey endswith "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer\\HideSCANetwork" or RegistryKey endswith "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer\\HideSCAPower" or RegistryKey endswith "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer\\HideSCAVolume") and RegistryValueData =~ "DWORD (0x00000001)") or ((RegistryKey endswith "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Advanced\\ShowInfoTip" or RegistryKey endswith "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Advanced\\ShowCompColor") and RegistryValueData =~ "DWORD (0x00000000)")

KQL (Microsoft 365 Defender)

DeviceRegistryEvents
| where ((RegistryKey endswith "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer\\HideClock" or RegistryKey endswith "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer\\HideSCAHealth" or RegistryKey endswith "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer\\HideSCANetwork" or RegistryKey endswith "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer\\HideSCAPower" or RegistryKey endswith "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer\\HideSCAVolume") and RegistryValueData =~ "DWORD (0x00000001)") or ((RegistryKey endswith "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Advanced\\ShowInfoTip" or RegistryKey endswith "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Advanced\\ShowCompColor") and RegistryValueData =~ "DWORD (0x00000000)")

Required Data Sources

False Positive Guidance

• Legitimate admin script

MITRE ATT&CK Context

• Tactic: Persistence
• Technique: T1112 — T1112

References

• https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1564.001/T1564.001.md
• SigmaHQ Rule