H3XA — Operational Evidence

TypeMalware

External ID—

First seen2026-08-14

Last seen2026-08-14

Confidence

—

[Elise](https://attack.mitre.org/software/S0081) is a custom backdoor Trojan that appears to be used exclusively by [Lotus Blossom](https://attack.mitre.org/groups/G0030). It is part of a larger group of tools referred to as LStudio, ST Group, and APT0LSTU.(Citation: Lotus Blossom Jun 2015)(Citation: Accenture Dragonfish Jan 2018)

Labels

malware

20 recorded

Relationships

uses

to Dynamic-link Library Injection

Technique

uses

to Encrypted/Encoded File

Technique

uses

to File and Directory Discovery

Technique

uses

to File Deletion

Technique

uses

to Ingress Tool Transfer

Technique

uses

to Local Account

Technique

uses

to Local Data Staging

Technique

uses

to Match Legitimate Resource Name or Location

Technique

uses

to Process Discovery

Technique

uses

to Registry Run Keys / Startup Folder

Technique

uses

to Rundll32

Technique

uses

to Standard Encoding

Technique

uses

to Symmetric Cryptography

Technique

uses

to System Information Discovery

Technique

uses

to System Network Configuration Discovery

Technique

uses

to System Service Discovery

Technique

uses

to Timestomp

Technique

uses

to Web Protocols

Technique

uses

to Windows Service

Technique

uses

from Lotus Blossom

Group

6 external

References

mitre-attack

S0081

open

Elise

—

BKDR_ESILE

—

Page

—

Accenture Dragonfish Jan 2018

https://web.archive.org/web/20190508165226/https://www.accenture.com/t20180127T003755Z_w_/us-en/_acnmedia/PDF-46/Accenture-Security-Dragonfish-Threat-Analysis.pdf

open

Lotus Blossom Jun 2015

https://www.paloaltonetworks.com/resources/research/unit42-operation-lotus-blossom.html

open