Sigma rule: Exploiting CVE-2019-1388

Rule

Title

Exploiting CVE-2019-1388

Status

stable

Level

critical

Author

Florian Roth (Nextron Systems)

Date

2019-11-20

Modified

2024-12-01

File

rules-emerging-threats/2019/Exploits/CVE-2019-1388/proc_creation_win_exploit_cve_2019_1388.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects an exploitation attempt in which the UAC consent dialogue is used to invoke an Internet Explorer process running as LOCAL_SYSTEM

Log source

product

windows

category

process_creation

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 (as the rule lists them)

• Unknown

Tags

• attack.privilege-escalation
• attack.t1068
• cve.2019-1388
• detection.emerging-threats

CVEs this rule names

• CVE-2019-1388

MITRE ATT&CK ids this rule names

• T1068

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

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2019/Exploits/CVE-2019-1388/proc_creation_win_exploit_cve_2019_1388.yml