Emerging Threatcriticalstable
Exploiting CVE-2019-1388
Detects an exploitation attempt in which the UAC consent dialogue is used to invoke an Internet Explorer process running as LOCAL_SYSTEM
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Launch
Florian Roth (Nextron Systems)Created Wed Nov 20Updated Sun Dec 0102e0b2ea-a597-428e-b04a-af6a1a403e5c2019
Emerging Threat
Active Threat
Developed to detect an active or emerging threat. Prioritize investigation of any alerts and correlate with threat intelligence.
Log Source
WindowsProcess Creation
ProductWindows← raw: windows
CategoryProcess Creation← raw: process_creation
Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.
Detection Logic
Detection Logic2 selectors
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_*False Positives
Unknown
False positive likelihood has not been assessed. Additional context may be needed during triage.
MITRE ATT&CK
Other
cve.2019-1388detection.emerging-threats
Rule Metadata
Rule ID
02e0b2ea-a597-428e-b04a-af6a1a403e5c
Status
stable
Level
critical
Type
Emerging Threat
Created
Wed Nov 20
Modified
Sun Dec 01
Path
rules-emerging-threats/2019/Exploits/CVE-2019-1388/proc_creation_win_exploit_cve_2019_1388.yml
Raw Tags
attack.privilege-escalationattack.t1068cve.2019-1388detection.emerging-threats