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blue-team-tools/rules/windows/registry_event/sysmon_uac_bypass_shell_open.yml
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2021-09-03 13:26:34 +02:00

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YAML

title: UAC Bypass Using Registry Shell Open Keys
id: 152f3630-77c1-4284-bcc0-4cc68ab2f6e7
description: Detects the pattern of UAC Bypass using fodhelper.exe, computerdefaults.exe, slui.exe via registry keys (e.g. UACMe 33 or 62)
author: Christian Burkard
date: 2021/08/30
status: experimental
references:
- https://github.com/hfiref0x/UACME
- https://winscripting.blog/2017/05/12/first-entry-welcome-and-uac-bypass/
- https://github.com/RhinoSecurityLabs/Aggressor-Scripts/tree/master/UACBypass
tags:
- attack.defense_evasion
- attack.privilege_escalation
- attack.t1548.002
logsource:
category: registry_event
product: windows
detection:
selection1:
TargetObject|endswith: '_Classes\ms-settings\shell\open\command\SymbolicLinkValue'
Details|contains: '\Software\Classes\{'
selection2:
TargetObject|endswith: '_Classes\ms-settings\shell\open\command\DelegateExecute'
selection3:
TargetObject|endswith:
- '_Classes\ms-settings\shell\open\command\(Default)'
- '_Classes\exefile\shell\open\command\(Default)'
filter_sel3:
Details: '(Empty)'
condition: selection1 or selection2 or (selection3 and not filter_sel3)
falsepositives:
- Unknown
level: high