Suspicious JavaScript Execution Via Mshta.EXE

Title: Suspicious JavaScript Execution Via Mshta.EXE
Status: test
Description:Detects execution of javascript code using "mshta.exe".
References:
  -https://eqllib.readthedocs.io/en/latest/analytics/6bc283c4-21f2-4aed-a05c-a9a3ffa95dd4.html
  -https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218.005/T1218.005.md
Author: E.M. Anhaus (originally from Atomic Blue Detections, Endgame), oscd.community
Date: 2019-10-24
modified:2023-02-07
Tags:

• -'attack.stealth'
• -'attack.t1218.005'

Logsource:

• category: process_creation
• product: windows

Detection:
  selection_img:
Image|endswith:'\mshta.exe' OriginalFileName:'MSHTA.EXE'   selection_cli:
    CommandLine|contains: 'javascript'
  condition:all of selection_*
Falsepositives:
  -Unknown
Level: high