Potential CVE-2023-36874 Exploitation - Uncommon Report.Wer Location

title: Potential CVE-2023-36874 Exploitation - Uncommon Report.Wer Location
id: 92389a99-5215-43b0-a09f-e334453b2ed3
status: test
description: Detects the creation of a "Report.wer" file in an uncommon folder structure. This could be a sign of potential exploitation of CVE-2023-36874.
references:
    - https://github.com/Wh04m1001/CVE-2023-36874
    - https://www.crowdstrike.com/blog/falcon-complete-zero-day-exploit-cve-2023-36874/
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-08-23
tags:
    - attack.execution
    - cve.2023-36874
    - detection.emerging-threats
logsource:
    category: file_event
    product: windows
detection:
    selection:
        TargetFilename|contains: ':\ProgramData\Microsoft\Windows\WER\ReportArchive\'
        TargetFilename|endswith: '\Report.wer'
    filter_main_locations:
        TargetFilename|contains:
            # Note: This list is non exhaustive. Use this as a start for hunting for suspicious folder report
            - '\ReportArchive\AppCrash_'
            - '\ReportArchive\AppHang_'
            - '\ReportArchive\Critical_'
            - '\ReportArchive\Kernel_'
            - '\ReportArchive\NonCritical_'
    condition: selection and not 1 of filter_main_*
falsepositives:
    - Unknown
level: medium