Malicious Windows Script Components File Execution by TAEF Detection

calendar Feb 26, 2024 · attack.defense_evasion attack.t1218  ·
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Windows Test Authoring and Execution Framework (TAEF) framework allows you to run automation by executing tests files written on different languages (C, C#, Microsoft COM Scripting interfaces Adversaries may execute malicious code (such as WSC file with VBScript, dll and so on) directly by running te.exe

Sigma rule (View on GitHub)

 1title: Malicious Windows Script Components File Execution by TAEF Detection
 2id: 634b00d5-ccc3-4a06-ae3b-0ec8444dd51b
 3status: test
 4description: |
 5  Windows Test Authoring and Execution Framework (TAEF) framework allows you to run automation by executing tests files written on different languages (C, C#, Microsoft COM Scripting interfaces
 6  Adversaries may execute malicious code (such as WSC file with VBScript, dll and so on) directly by running te.exe  
 7references:
 8    - https://lolbas-project.github.io/lolbas/OtherMSBinaries/Te/
 9    - https://twitter.com/pabraeken/status/993298228840992768
10    - https://docs.microsoft.com/en-us/windows-hardware/drivers/taef/
11author: 'Agro (@agro_sev) oscd.community'
12date: 2020/10/13
13modified: 2021/11/27
14tags:
15    - attack.defense_evasion
16    - attack.t1218
17logsource:
18    category: process_creation
19    product: windows
20detection:
21    selection:
22        - Image|endswith: '\te.exe'
23        - ParentImage|endswith: '\te.exe'
24        - OriginalFileName: '\te.exe'
25    condition: selection
26falsepositives:
27    - It's not an uncommon to use te.exe directly to execute legal TAEF tests
28level: low

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