H3XA — Operational Evidence

TypeMalware

External ID—

First seen2026-08-14

Last seen2026-08-14

Confidence

—

[Pandora](https://attack.mitre.org/software/S0664) is a multistage kernel rootkit with backdoor functionality that has been in use by [Threat Group-3390](https://attack.mitre.org/groups/G0027) since at least 2020.(Citation: Trend Micro Iron Tiger April 2021)

Labels

malware

15 recorded

Relationships

uses

from Cinnamon Tempest

Group

uses

to Code Signing Policy Modification

Technique

uses

Technique

uses

to DLL

Technique

uses

to Exploitation for Privilege Escalation

Technique

uses

to Ingress Tool Transfer

Technique

uses

to Modify Registry

Technique

uses

to Process Discovery

Technique

uses

to Process Injection

Technique

uses

to Service Execution

Technique

uses

to Symmetric Cryptography

Technique

uses

to Traffic Signaling

Technique

uses

to Web Protocols

Technique

uses

to Windows Service

Technique

uses

from Threat Group-3390

Group

2 external

References

mitre-attack

S0664

Trend Micro Iron Tiger April 2021

https://www.trendmicro.com/en_us/research/21/d/iron-tiger-apt-updates-toolkit-with-evolved-sysupdate-malware-va.html