title: Suspicious HWP Sub Processes
id: 023394c4-29d5-46ab-92b8-6a534c6f447b
status: test
description: Detects suspicious Hangul Word Processor (Hanword) sub processes that could indicate an exploitation
author: Florian Roth
references:
  - https://www.securitynewspaper.com/2016/11/23/technical-teardown-exploit-malware-hwp-files/
  - https://www.hybrid-analysis.com/search?query=context:74940dcc5b38f9f9b1a0fea760d344735d7d91b610e6d5bd34533dd0153402c5&from_sample=5db135000388385a7644131f&block_redirect=1
  - https://twitter.com/cyberwar_15/status/1187287262054076416
  - https://blog.alyac.co.kr/1901
  - https://en.wikipedia.org/wiki/Hangul_(word_processor)
date: 2019/10/24
modified: 2021/11/27
logsource:
  category: process_creation
  product: windows
detection:
  selection:
    ParentImage|endswith: '\Hwp.exe'
    Image|endswith: '\gbb.exe'
  condition: selection
falsepositives:
  - Unknown
level: high
tags:
  - attack.initial_access
  - attack.t1566.001
  - attack.execution
  - attack.t1203
  - attack.t1059.003
  - attack.g0032
