Lateral Movement Speechruntime

Date: 2025-08-25 ID: 54417fe2-a9c5-46f8-895a-591f5d87231e Author: Raven Tait, Splunk Environment: attack_range Directory: lateral_movement_speechruntime

Description

Using DLL to start a process on a remote endpoint leveraging COM Hijacking against SpeechRuntime to perform lateral movement and remote code execution.

MITRE ATT&CK Techniques

ID	Technique	Tactic
T1021.003	Distributed Component Object Model	Lateral Movement

Environment Details

Field	Value
Environment	attack_range
Directory	lateral_movement_speechruntime
Test Date	2025-08-25

Datasets

The following datasets were collected during this attack simulation:

Windows-Sysmon

Path: /datasets/attack_techniques/T1021.003/lateral_movement_speechruntime/windows-sysmon.log
Sourcetype: XmlWinEventLog
Source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational

The following detections in our security content repository use this attack data for testing:

Detection Name	Type	Source	MITRE ATT&CK	Analytic Story
Windows SpeechRuntime COM Hijacking DLL Load	`TTP`	Endpoint	T1021.003	Active Directory Lateral Movement, Compromised Windows Host, Scattered Lapsus$ Hunters
Windows SpeechRuntime Suspicious Child Process	`TTP`	Endpoint	T1021.003	Active Directory Lateral Movement, Compromised Windows Host

Usage Instructions

Replay with Splunk Attack Data

Replay attack data with replay.py from Splunk Attack Data.

1python replay.py --dataset /datasets/attack_techniques/T1021.003/lateral_movement_speechruntime/windows-sysmon.log --index attack_data

Manual Import

Download the dataset files from the paths listed above
Configure your Splunk instance with the appropriate sourcetypes
Import the logs using the Splunk Add Data wizard

Find more detections and analytics for this attack technique in our security content repository.

Source: GitHub | Version: 1.0