Out1

MITRE

Malware Type:
Tool

First seen:
Unknown

Last seen:
Unknown

Details:

[Out1](https://attack.mitre.org/software/S0594) is a remote access tool written in python and used by [MuddyWater](https://attack.mitre.org/groups/G0069) since at least 2021.(Citation: Trend Micro Muddy Water March 2021)

Associated Techniques (5)

ID	ATT&CK	Tactics
T1005	Data from Local System	-
T1027	Obfuscated Files or Information	-
T1059.003	Windows Command Shell	-
T1071.001	Web Protocols	-
T1114.001	Local Email Collection	-

Used by Actors (1)

MuddyWater
Nation-state

Metadata

ID:	740
Created:	13/01/2026 17:48
Updated:	20/04/2026 16:00