title: Exploiting CVE-2019-1388
id: 02e0b2ea-a597-428e-b04a-af6a1a403e5c
status: stable
description: Detects an exploitation attempt in which the UAC consent dialogue is used to invoke an Internet Explorer process running as LOCAL_SYSTEM
references:
    - https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1388
    - https://www.zerodayinitiative.com/blog/2019/11/19/thanksgiving-treat-easy-as-pie-windows-7-secure-desktop-escalation-of-privilege
author: Florian Roth (Nextron Systems)
date: 2019-11-20
modified: 2024-12-01
tags:
    - attack.privilege-escalation
    - attack.t1068
    - cve.2019-1388
    - detection.emerging-threats
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        ParentImage|endswith: '\consent.exe'
        Image|endswith: '\iexplore.exe'
        CommandLine|contains: ' http'
    selection_rights:
        - IntegrityLevel:
              - 'System'  # for Sysmon users
              - 'S-1-16-16384' # System
        - User|contains: # covers many language settings
              - 'AUTHORI'
              - 'AUTORI'
    condition: all of selection_*
falsepositives:
    - Unknown
level: critical