Suspicious JavaScript Execution Via Mshta.EXE

calendar Feb 7, 2023 · attack.defense_evasion attack.t1218.005  ·
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Detects execution of javascript code using "mshta.exe".

Sigma rule (View on GitHub)

 1title: Suspicious JavaScript Execution Via Mshta.EXE
 2id: 67f113fa-e23d-4271-befa-30113b3e08b1
 3status: test
 4description: Detects execution of javascript code using "mshta.exe".
 5references:
 6    - https://eqllib.readthedocs.io/en/latest/analytics/6bc283c4-21f2-4aed-a05c-a9a3ffa95dd4.html
 7    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218.005/T1218.005.md
 8author: E.M. Anhaus (originally from Atomic Blue Detections, Endgame), oscd.community
 9date: 2019/10/24
10modified: 2023/02/07
11tags:
12    - attack.defense_evasion
13    - attack.t1218.005
14logsource:
15    category: process_creation
16    product: windows
17detection:
18    selection_img:
19        - Image|endswith: '\mshta.exe'
20        - OriginalFileName: 'MSHTA.EXE'
21    selection_cli:
22        CommandLine|contains: 'javascript'
23    condition: all of selection_*
24falsepositives:
25    - Unknown
26level: high

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