Trusted Design

Octopus-Rex. Evolution of a multi task Botnet

概要

During the last decade, different types of malware have been targeting Linux servers; Elknot, Encoder, Mirai, LuaBot, NyaDrop, Gayfgt etc. Most of them are used for DDoS purpose but there are some exceptions. Rex is one of them. In this article we’ll try to present a detailed analysis of Rex. Rex is a new malware developed in Go. Monitoring its activity over the last seven months brought out the efforts for developing various features.

Created: 2026-02-23

Indicators

Indicatorsは見つかっていない。

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このPulseに関連する脅威アクター (事実ベース)

Kimsuky

Score: 18.16

Matched TTPs:

T1036.007 - Double File Extension
T1587.001 - Malware
T1007 - System Service Discovery
T1608.001 - Upload Malware
T1583.006 - Web Services
T1518.001 - Security Software Discovery
T1059.006 - Python
T1071.001 - Web Protocols

MITREへのリンク →

Mustang Panda

Score: 21.57

Matched TTPs:

T1036.007 - Double File Extension
T1587.001 - Malware
T1608.001 - Upload Malware
T1583.006 - Web Services
T1678 - Delay Execution
T1203 - Exploitation for Client Execution
T1071.001 - Web Protocols
T1027.007 - Dynamic API Resolution

MITREへのリンク →

FIN13

Score: 3.28

Matched TTPs:

T1587.001 - Malware
T1071.001 - Web Protocols

MITREへのリンク →

Moonstone Sleet

Score: 7.78

Matched TTPs:

T1587.001 - Malware
T1608.001 - Upload Malware
T1071.001 - Web Protocols
T1566.003 - Spearphishing via Service

MITREへのリンク →

Indrik Spider

Score: 7.45

Matched TTPs:

T1587.001 - Malware
T1007 - System Service Discovery
T1584.004 - Server

MITREへのリンク →

Lazarus Group

Score: 16.28

Matched TTPs:

T1587.001 - Malware
T1583.006 - Web Services
T1203 - Exploitation for Client Execution
T1071.001 - Web Protocols
T1584.004 - Server
T1027.007 - Dynamic API Resolution
T1566.003 - Spearphishing via Service

MITREへのリンク →

Contagious Interview

Score: 15.48

Matched TTPs:

T1587.001 - Malware
T1608.001 - Upload Malware
T1583.006 - Web Services
T1059.006 - Python
T1543.001 - Launch Agent
T1566.003 - Spearphishing via Service

MITREへのリンク →

OilRig

Score: 16.33

Matched TTPs:

T1587.001 - Malware
T1007 - System Service Discovery
T1608.001 - Upload Malware
T1203 - Exploitation for Client Execution
T1137.004 - Outlook Home Page
T1071.001 - Web Protocols
T1566.003 - Spearphishing via Service

MITREへのリンク →

UNC3886

Score: 8.39

Matched TTPs:

T1587.001 - Malware
T1588.001 - Malware
T1203 - Exploitation for Client Execution
T1059.006 - Python

MITREへのリンク →

LuminousMoth

Score: 7.72

Matched TTPs:

T1587.001 - Malware
T1608.001 - Upload Malware
T1588.001 - Malware
T1071.001 - Web Protocols

MITREへのリンク →

Sandworm Team

Score: 17.74

Matched TTPs:

T1587.001 - Malware
T1608.001 - Upload Malware
T1584.005 - Botnet
T1203 - Exploitation for Client Execution
T1499 - Endpoint Denial of Service
T1071.001 - Web Protocols
T1584.004 - Server

MITREへのリンク →

APT29

Score: 10.47

Matched TTPs:

T1587.001 - Malware
T1583.006 - Web Services
T1203 - Exploitation for Client Execution
T1059.006 - Python
T1566.003 - Spearphishing via Service

MITREへのリンク →

Play

Score: 3.99

Matched TTPs:

T1587.001 - Malware
T1518.001 - Security Software Discovery

MITREへのリンク →

Aoqin Dragon

Score: 3.59

Matched TTPs:

T1587.001 - Malware
T1203 - Exploitation for Client Execution

MITREへのリンク →

RedCurl

Score: 5.62

Matched TTPs:

T1587.001 - Malware
T1059.006 - Python
T1071.001 - Web Protocols

MITREへのリンク →

Turla

Score: 17.35

Matched TTPs:

T1587.001 - Malware
T1007 - System Service Discovery
T1588.001 - Malware
T1583.006 - Web Services
T1518.001 - Security Software Discovery
T1059.006 - Python
T1071.001 - Web Protocols
T1584.004 - Server

MITREへのリンク →

Ke3chang

Score: 9.65

Matched TTPs:

T1587.001 - Malware
T1583.005 - Botnet
T1007 - System Service Discovery
T1071.001 - Web Protocols

MITREへのリンク →

TeamTNT

Score: 9.68

Matched TTPs:

T1587.001 - Malware
T1007 - System Service Discovery
T1608.001 - Upload Malware
T1518.001 - Security Software Discovery
T1071.001 - Web Protocols

MITREへのリンク →

FIN7

Score: 6.08

Matched TTPs:

T1587.001 - Malware
T1608.001 - Upload Malware
T1583.006 - Web Services

MITREへのリンク →

HAFNIUM

Score: 10.67

Matched TTPs:

T1583.005 - Botnet
T1584.005 - Botnet
T1583.006 - Web Services
T1071.001 - Web Protocols

MITREへのリンク →

APT5

Score: 3.84

Matched TTPs:

T1583.005 - Botnet

MITREへのリンク →

BRONZE BUTLER

Score: 7.55

Matched TTPs:

T1007 - System Service Discovery
T1203 - Exploitation for Client Execution
T1059.006 - Python
T1071.001 - Web Protocols

MITREへのリンク →

Aquatic Panda

Score: 6.88

Matched TTPs:

T1007 - System Service Discovery
T1588.001 - Malware
T1518.001 - Security Software Discovery

MITREへのリンク →

Chimera

Score: 3.71

Matched TTPs:

T1007 - System Service Discovery
T1071.001 - Web Protocols

MITREへのリンク →

Earth Lusca

Score: 14.14

Matched TTPs:

T1007 - System Service Discovery
T1608.001 - Upload Malware
T1588.001 - Malware
T1583.006 - Web Services
T1059.006 - Python
T1584.004 - Server

MITREへのリンク →

Volt Typhoon

Score: 8.98

Matched TTPs:

T1007 - System Service Discovery
T1584.005 - Botnet
T1584.004 - Server

MITREへのリンク →

admin@338

Score: 4.02

Matched TTPs:

T1007 - System Service Discovery
T1203 - Exploitation for Client Execution

MITREへのリンク →

APT1

Score: 4.98

Matched TTPs:

T1007 - System Service Discovery
T1588.001 - Malware

MITREへのリンク →

TA2541

Score: 8.34

Matched TTPs:

T1608.001 - Upload Malware
T1588.001 - Malware
T1583.006 - Web Services
T1518.001 - Security Software Discovery

MITREへのリンク →

LazyScripter

Score: 6.44

Matched TTPs:

T1608.001 - Upload Malware
T1588.001 - Malware
T1583.006 - Web Services

MITREへのリンク →

Gamaredon Group

Score: 7.07

Matched TTPs:

T1608.001 - Upload Malware
T1583.006 - Web Services
T1518.001 - Security Software Discovery
T1071.001 - Web Protocols

MITREへのリンク →

Threat Group-3390

Score: 8.79

Matched TTPs:

T1608.001 - Upload Malware
T1608.002 - Upload Tool
T1203 - Exploitation for Client Execution
T1071.001 - Web Protocols

MITREへのリンク →

SideCopy

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Matched TTPs:

T1608.001 - Upload Malware
T1518.001 - Security Software Discovery

MITREへのリンク →

TA505

Score: 5.62

Matched TTPs:

T1608.001 - Upload Malware
T1588.001 - Malware
T1071.001 - Web Protocols

MITREへのリンク →

BlackByte

Score: 5.06

Matched TTPs:

T1608.001 - Upload Malware
T1518.001 - Security Software Discovery
T1071.001 - Web Protocols

MITREへのリンク →

BITTER

Score: 4.65

Matched TTPs:

T1608.001 - Upload Malware
T1203 - Exploitation for Client Execution
T1071.001 - Web Protocols

MITREへのリンク →

APT32

Score: 6.67

Matched TTPs:

T1608.001 - Upload Malware
T1583.006 - Web Services
T1203 - Exploitation for Client Execution
T1071.001 - Web Protocols

MITREへのリンク →

Saint Bear

Score: 5.48

Matched TTPs:

T1608.001 - Upload Malware
T1583.006 - Web Services
T1203 - Exploitation for Client Execution

MITREへのリンク →

EXOTIC LILY

Score: 5.99

Matched TTPs:

T1608.001 - Upload Malware
T1203 - Exploitation for Client Execution
T1566.003 - Spearphishing via Service

MITREへのリンク →

APT42

Score: 5.06

Matched TTPs:

T1608.001 - Upload Malware
T1518.001 - Security Software Discovery
T1071.001 - Web Protocols

MITREへのリンク →

APT38

Score: 7.62

Matched TTPs:

T1480.002 - Mutual Exclusion
T1518.001 - Security Software Discovery
T1071.001 - Web Protocols

MITREへのリンク →

Medusa Group

Score: 9.23

Matched TTPs:

T1608.002 - Upload Tool
T1583.006 - Web Services
T1518.001 - Security Software Discovery
T1071.001 - Web Protocols

MITREへのリンク →

Ember Bear

Score: 3.95

Matched TTPs:

T1588.001 - Malware
T1203 - Exploitation for Client Execution

MITREへのリンク →

Metador

Score: 3.65

Matched TTPs:

T1588.001 - Malware
T1071.001 - Web Protocols

MITREへのリンク →

Andariel

Score: 3.95

Matched TTPs:

T1588.001 - Malware
T1203 - Exploitation for Client Execution

MITREへのリンク →

Axiom

Score: 9.65

Matched TTPs:

T1584.005 - Botnet
T1203 - Exploitation for Client Execution
T1001.002 - Steganography

MITREへのリンク →

ZIRCONIUM

Score: 4.35

Matched TTPs:

T1583.006 - Web Services
T1059.006 - Python

MITREへのリンク →

MuddyWater

Score: 8.93

Matched TTPs:

T1583.006 - Web Services
T1203 - Exploitation for Client Execution
T1518.001 - Security Software Discovery
T1059.006 - Python
T1071.001 - Web Protocols

MITREへのリンク →

APT28

Score: 9.23

Matched TTPs:

T1583.006 - Web Services
T1203 - Exploitation for Client Execution
T1498 - Network Denial of Service
T1071.001 - Web Protocols

MITREへのリンク →

Confucius

Score: 4.69

Matched TTPs:

T1583.006 - Web Services
T1203 - Exploitation for Client Execution
T1071.001 - Web Protocols

MITREへのリンク →

Magic Hound

Score: 5.72

Matched TTPs:

T1583.006 - Web Services
T1071.001 - Web Protocols
T1566.003 - Spearphishing via Service

MITREへのリンク →

Sidewinder

Score: 4.58

Matched TTPs:

T1203 - Exploitation for Client Execution
T1518.001 - Security Software Discovery
T1071.001 - Web Protocols

MITREへのリンク →

Dragonfly

Score: 6.67

Matched TTPs:

T1203 - Exploitation for Client Execution
T1059.006 - Python
T1584.004 - Server

MITREへのリンク →

The White Company

Score: 3.39

Matched TTPs:

T1203 - Exploitation for Client Execution
T1518.001 - Security Software Discovery

MITREへのリンク →

Patchwork

Score: 3.39

Matched TTPs:

T1203 - Exploitation for Client Execution
T1518.001 - Security Software Discovery

MITREへのリンク →

Cobalt Group

Score: 4.58

Matched TTPs:

T1203 - Exploitation for Client Execution
T1518.001 - Security Software Discovery
T1071.001 - Web Protocols

MITREへのリンク →

Leviathan

Score: 4.33

Matched TTPs:

T1203 - Exploitation for Client Execution
T1584.004 - Server

MITREへのリンク →

APT37

Score: 5.02

Matched TTPs:

T1203 - Exploitation for Client Execution
T1059.006 - Python
T1071.001 - Web Protocols

MITREへのリンク →

Tropic Trooper

Score: 4.58

Matched TTPs:

T1203 - Exploitation for Client Execution
T1518.001 - Security Software Discovery
T1071.001 - Web Protocols

MITREへのリンク →

Tonto Team

Score: 3.83

Matched TTPs:

T1203 - Exploitation for Client Execution
T1059.006 - Python

MITREへのリンク →

Darkhotel

Score: 3.39

Matched TTPs:

T1203 - Exploitation for Client Execution
T1518.001 - Security Software Discovery

MITREへのリンク →

Windshift

Score: 5.61

Matched TTPs:

T1518.001 - Security Software Discovery
T1071.001 - Web Protocols
T1566.003 - Spearphishing via Service

MITREへのリンク →

FIN8

Score: 3.09

Matched TTPs:

T1518.001 - Security Software Discovery
T1071.001 - Web Protocols

MITREへのリンク →

Wizard Spider

Score: 3.09

Matched TTPs:

T1518.001 - Security Software Discovery
T1071.001 - Web Protocols

MITREへのリンク →

ToddyCat

Score: 4.42

Matched TTPs:

T1518.001 - Security Software Discovery
T1566.003 - Spearphishing via Service

MITREへのリンク →

Rocke

Score: 5.43

Matched TTPs:

T1518.001 - Security Software Discovery
T1059.006 - Python
T1071.001 - Web Protocols

MITREへのリンク →

APT39

Score: 3.53

Matched TTPs:

T1059.006 - Python
T1071.001 - Web Protocols

MITREへのリンク →

Dark Caracal

Score: 3.71

Matched TTPs:

T1071.001 - Web Protocols
T1566.003 - Spearphishing via Service

MITREへのリンク →

Daggerfly

Score: 4.02

Matched TTPs:

T1071.001 - Web Protocols
T1584.004 - Server

MITREへのリンク →

このPulseに関連する脅威アクター (推論ベース)

Mustang Panda

Score: 0.80

Matched TTPs:

T1036.007 - Double File Extension
T1678 - Delay Execution
T1587.001 - Malware
T1203 - Exploitation for Client Execution
T1583.006 - Web Services
T1027.007 - Dynamic API Resolution
T1071.001 - Web Protocols
T1608.001 - Upload Malware

MITREへのリンク →

Sandworm Team

Score: 0.71

Matched TTPs:

T1584.005 - Botnet
T1587.001 - Malware
T1203 - Exploitation for Client Execution
T1584.004 - Server
T1499 - Endpoint Denial of Service
T1071.001 - Web Protocols
T1608.001 - Upload Malware

MITREへのリンク →

Turla

Score: 0.70

Matched TTPs:

T1059.006 - Python
T1587.001 - Malware
T1007 - System Service Discovery
T1584.004 - Server
T1583.006 - Web Services
T1588.001 - Malware
T1071.001 - Web Protocols
T1518.001 - Security Software Discovery

MITREへのリンク →

Kimsuky

Score: 0.69

Matched TTPs:

T1036.007 - Double File Extension
T1059.006 - Python
T1587.001 - Malware
T1007 - System Service Discovery
T1583.006 - Web Services
T1071.001 - Web Protocols
T1518.001 - Security Software Discovery
T1608.001 - Upload Malware

MITREへのリンク →

Lazarus Group

Score: 0.63

Matched TTPs:

T1587.001 - Malware
T1203 - Exploitation for Client Execution
T1584.004 - Server
T1566.003 - Spearphishing via Service
T1583.006 - Web Services
T1027.007 - Dynamic API Resolution
T1071.001 - Web Protocols

MITREへのリンク →

OilRig

Score: 0.60

Matched TTPs:

T1587.001 - Malware
T1137.004 - Outlook Home Page
T1203 - Exploitation for Client Execution
T1007 - System Service Discovery
T1566.003 - Spearphishing via Service
T1071.001 - Web Protocols
T1608.001 - Upload Malware

MITREへのリンク →

Contagious Interview

Score: 0.59

Matched TTPs:

T1059.006 - Python
T1587.001 - Malware
T1543.001 - Launch Agent
T1566.003 - Spearphishing via Service
T1583.006 - Web Services
T1608.001 - Upload Malware

MITREへのリンク →

Earth Lusca

Score: 0.55

Matched TTPs:

T1059.006 - Python
T1007 - System Service Discovery
T1584.004 - Server
T1583.006 - Web Services
T1588.001 - Malware
T1608.001 - Upload Malware

MITREへのリンク →

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