H3XA — Operational Evidence

TypeMalware

External ID—

First seen2026-08-14

Last seen2026-08-14

Confidence

—

[Crimson](https://attack.mitre.org/software/S0115) is a remote access Trojan that has been used by [Transparent Tribe](https://attack.mitre.org/groups/G0134) since at least 2016.(Citation: Proofpoint Operation Transparent Tribe March 2016)(Citation: Kaspersky Transparent Tribe August 2020)

Labels

malware

32 recorded

Relationships

uses

from C0011

Campaign

uses

to Audio Capture

Technique

uses

to Credentials from Web Browsers

Technique

uses

to Data from Local System

Technique

uses

to Data from Removable Media

Technique

uses

to Deobfuscate/Decode Files or Information

Technique

uses

to Exfiltration Over C2 Channel

Technique

uses

to File and Directory Discovery

Technique

uses

to File Deletion

Technique

uses

to Ingress Tool Transfer

Technique

uses

Technique

uses

to Local Email Collection

Technique

uses

to Local Storage Discovery

Technique

uses

to Modify Registry

Technique

uses

to Non-Application Layer Protocol

Technique

uses

to Peripheral Device Discovery

Technique

uses

to Process Discovery

Technique

uses

to Query Registry

Technique

uses

to Registry Run Keys / Startup Folder

Technique

uses

to Replication Through Removable Media

Technique

uses

to Screen Capture

Technique

uses

to Security Software Discovery

Technique

uses

to System Information Discovery

Technique

uses

to System Location Discovery

Technique

uses

to System Network Configuration Discovery

Technique

uses

to System Owner/User Discovery

Technique

uses

to System Time Discovery

Technique

uses

to Time Based Checks

Technique

uses

to Video Capture

Technique

uses

to Web Protocols

Technique

uses

to Windows Command Shell

Technique

uses

from Transparent Tribe

Group

4 external

References

mitre-attack

S0115

MSIL/Crimson

—

Kaspersky Transparent Tribe August 2020

https://securelist.com/transparent-tribe-part-1/98127/

Proofpoint Operation Transparent Tribe March 2016

https://www.proofpoint.com/sites/default/files/proofpoint-operation-transparent-tribe-threat-insight-en.pdf