title: HH.exe Execution
id: 68c8acb4-1b60-4890-8e82-3ddf7a6dba84
status: test
description: Identifies usage of hh.exe executing recently modified .chm files.
author: E.M. Anhaus (originally from Atomic Blue Detections, Dan Beavin), oscd.community
references:
  - https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1218.001/T1218.001.md
  - https://eqllib.readthedocs.io/en/latest/analytics/b25aa548-7937-11e9-8f5c-d46d6d62a49e.html
date: 2019/10/24
modified: 2021/11/27
logsource:
  category: process_creation
  product: windows
detection:
  selection:
    Image|endswith: '\hh.exe'
    CommandLine|contains: '.chm'
  condition: selection
fields:
  - ComputerName
  - User
  - CommandLine
falsepositives:
  - Unlikely
level: high
tags:
  - attack.defense_evasion
  - attack.t1218.001