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2026-03-16 13:19:47 +00:00

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YAML

---
Name: write.exe
Description: 'Windows Write'
Author: Michal Belzak
Created: 2025-06-17
Commands:
- Command: write.exe
Description: 'Executes a binary provided in default value of `HKCU\Software\Microsoft\Windows\CurrentVersion\App Paths\wordpad.exe`.'
Usecase: Execute binary through legitimate proxy. This might be utilized to confuse detection solutions that rely on parent-child relationships.
Category: Execute
Privileges: User
MitreID: T1218
OperatingSystem: Windows 10, Windows 11 (before 24H2)
Tags:
- Execute: EXE
- Requires: Registry Change
Full_Path:
- Path: 'C:\Windows\write.exe'
- Path: 'C:\Windows\System32\write.exe'
- Path: 'C:\Windows\SysWOW64\write.exe'
Detection:
- IOC: 'Changes to HKCU:\Software\Microsoft\Windows\CurrentVersion\App Paths\wordpad.exe'
- Sigma: https://github.com/SigmaHQ/sigma/blob/master/rules/windows/registry/registry_set/registry_set_persistence_app_paths.yml
Resources:
- Link: https://gist.github.com/mblzk/b8c5ff7c2bd0fb2b385cc2fdd119874b
Acknowledgement:
- Person: Michal Belzak