1200KM / sigma-rule
Malicious Windows Script Components File Execution by TAEF Detection — Sigma Rule
Sigma rule 634b00d5-ccc3-4a06-ae3b-0ec8444dd51b. Malicious Windows Script Components File Execution by TAEF Detection — Sigma Rule. 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
Rule metadata and linked tags
Author: Agro (@agro_sev) oscd.community. Source status: test; severity: low. Source dates: 2020-10-13 / 2021-11-27.
{
"category": "process_creation",
"product": "windows"
}Pinned original Sigma rule · Detection Rule License 1.1
Source SHA-256: 0b60dbe6b03a527e451286b05c803a710b29aba4080a4d502271815e123fdeeb
Detection logic
Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.
title: Malicious Windows Script Components File Execution by TAEF Detection
id: 634b00d5-ccc3-4a06-ae3b-0ec8444dd51b
status: test
description: |
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
references:
- https://lolbas-project.github.io/lolbas/OtherMSBinaries/Te/
- https://twitter.com/pabraeken/status/993298228840992768
- https://learn.microsoft.com/en-us/windows-hardware/drivers/taef/
author: 'Agro (@agro_sev) oscd.community'
date: 2020-10-13
modified: 2021-11-27
tags:
- attack.stealth
- attack.t1218
logsource:
category: process_creation
product: windows
detection:
selection:
- Image|endswith: '\te.exe'
- ParentImage|endswith: '\te.exe'
- OriginalFileName: '\te.exe'
condition: selection
falsepositives:
- It's not an uncommon to use te.exe directly to execute legal TAEF tests
level: low
False positives
- It's not an uncommon to use te.exe directly to execute legal TAEF tests
Source references
Connected ecosystem references
Exact source-tagged techniques
Telemetry review
Read the original logsource above, then inspect the linked detection workspaces for technique-level sensor context. No per-rule telemetry equivalence is inferred.
Pinned research references. No browser attack runner, live simulation result or validated detector is asserted. Source mappings and validation limits are preserved. ATT&CK / Atomic provenance · Detection provenance.