Sigma rule: Suspicious Speech Runtime Binary Child Process

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-eef2b85c03e4, updated 2025-10-23T00:00:00.000Z.

Rule

Title
Suspicious Speech Runtime Binary Child Process
Status
experimental
Level
high
Author
andrewdanis
Date
2025-10-23
File
rules/windows/process_creation/proc_creation_win_speechruntime_child_process.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects suspicious Speech Runtime Binary Execution by monitoring its child processes.
Child processes spawned by SpeechRuntime.exe could indicate an attempt for lateral movement via COM & DCOM hijacking.

Log source

product
windows
category
process_creation

Detection

selection:
    ParentImage|endswith: '\SpeechRuntime.exe'
condition: selection

False positives (as the rule lists them)

  • Unlikely.

Tags

  • attack.lateral-movement
  • attack.stealth
  • attack.t1021.003
  • attack.t1218

MITRE ATT&CK ids this rule names

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_speechruntime_child_process.yml

Sources and licences

  • SigmaHQ

    "Suspicious Speech Runtime Binary Child Process" by andrewdanis (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_speechruntime_child_process.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: Suspicious Speech Runtime Binary Child Process",
entity page, dataset version ref-eef2b85c03e4, updated 2025-10-23T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/78f10490-f2f4-4d19-a75b-4e0683bf3b8d (accessed 2026-11-03).
Underlying source: SigmaHQ rule 78f10490-f2f4-4d19-a75b-4e0683bf3b8d, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.