Exploit for CVE-2017-0261

Detects Winword starting uncommon sub process FLTLDR.exe as used in exploits for CVE-2017-0261 and CVE-2017-0262

Detection logic

selection

ParentImage|endswith: \WINWORD.EXE
Image|contains: \FLTLDR.exe

Condition

selection

Raw YAML

title: Exploit for CVE-2017-0261
id: 864403a1-36c9-40a2-a982-4c9a45f7d833
status: test
description: Detects Winword starting uncommon sub process FLTLDR.exe as used in exploits for CVE-2017-0261 and CVE-2017-0262
references:
    - https://www.fireeye.com/blog/threat-research/2017/05/eps-processing-zero-days.html
author: Florian Roth (Nextron Systems)
date: 2018-02-22
modified: 2021-11-27
tags:
    - attack.execution
    - attack.t1203
    - attack.t1204.002
    - attack.initial-access
    - attack.t1566.001
    - cve.2017-0261
    - detection.emerging-threats
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        ParentImage|endswith: '\WINWORD.EXE'
        Image|contains: '\FLTLDR.exe'
    condition: selection
falsepositives:
    - Several false positives identified, check for suspicious file names or locations (e.g. Temp folders)
level: medium