title: HH.exe Execution
author: E.M. Anhaus (originally from Atomic Blue Detections, Dan Beavin), oscd.community
date: 2019/10/24
description: Identifies usage of hh.exe executing recently modified .chm files.
detection:
  SELECTION_1:
    EventID: 1
  SELECTION_2:
    Image: '*\hh.exe'
  SELECTION_3:
    CommandLine: '*.chm*'
  condition: (SELECTION_1 and SELECTION_2 and SELECTION_3)
falsepositives:
- unlike
fields:
- ComputerName
- User
- CommandLine
id: 68c8acb4-1b60-4890-8e82-3ddf7a6dba84
level: high
logsource:
  category: process_creation
  product: windows
modified: 2019/11/11
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
status: experimental
tags:
- attack.defense_evasion
- attack.t1218.001
- attack.execution
- attack.t1223
ruletype: SIGMA