Trusted Design

WEBC2-GREENCAT (FAMILY)

概要

A WEBC2 backdoor is designed to retrieve a Web page from a pre-determined C2 server. It expects the Web page to contain special HTML tags; the backdoor will attempt to interpret the data between the tags as commands. This malware is a variant on the GREENCAT family, using a fixed web C2. This family is a full featured backdoor which provides remote command execution, file transfer, process and service enumeration and manipulation. It installs itself persistently through the current user's registry Run key.

Created: 2026-02-23

Indicators

Indicatorsは見つかっていない。

類似Pulses

このPulseに関連する脅威アクター (事実ベース)

Dragonfly

Score: 7.83
Matched TTPs:
  • T1505.003 - Web Shell
  • T1195.002 - Compromise Software Supply Chain
  • T1203 - Exploitation for Client Execution
  • T1021.001 - Remote Desktop Protocol
MITREへのリンク →

APT28

Score: 18.95
Matched TTPs:
  • T1505.003 - Web Shell
  • T1102.002 - Bidirectional Communication
  • T1203 - Exploitation for Client Execution
  • T1030 - Data Transfer Size Limits
  • T1071.001 - Web Protocols
  • T1137.002 - Office Test
  • T1550.001 - Application Access Token
MITREへのリンク →

OilRig

Score: 16.82
Matched TTPs:
  • T1505.003 - Web Shell
  • T1218.001 - Compiled HTML File
  • T1203 - Exploitation for Client Execution
  • T1137.004 - Outlook Home Page
  • T1071.001 - Web Protocols
  • T1021.001 - Remote Desktop Protocol
  • T1048.003 - Exfiltration Over Unencrypted Non-C2 Protocol
MITREへのリンク →

FIN13

Score: 4.60
Matched TTPs:
  • T1505.003 - Web Shell
  • T1071.001 - Web Protocols
  • T1021.001 - Remote Desktop Protocol
MITREへのリンク →

Agrius

Score: 3.41
Matched TTPs:
  • T1505.003 - Web Shell
  • T1021.001 - Remote Desktop Protocol
MITREへのリンク →

APT39

Score: 7.00
Matched TTPs:
  • T1505.003 - Web Shell
  • T1102.002 - Bidirectional Communication
  • T1071.001 - Web Protocols
  • T1021.001 - Remote Desktop Protocol
MITREへのリンク →

Mustang Panda

Score: 11.33
Matched TTPs:
  • T1505.003 - Web Shell
  • T1203 - Exploitation for Client Execution
  • T1071.001 - Web Protocols
  • T1027.007 - Dynamic API Resolution
  • T1048.003 - Exfiltration Over Unencrypted Non-C2 Protocol
MITREへのリンク →

Threat Group-3390

Score: 13.97
Matched TTPs:
  • T1505.003 - Web Shell
  • T1195.002 - Compromise Software Supply Chain
  • T1203 - Exploitation for Client Execution
  • T1030 - Data Transfer Size Limits
  • T1071.001 - Web Protocols
  • T1027.015 - Compression
MITREへのリンク →

Tropic Trooper

Score: 4.45
Matched TTPs:
  • T1505.003 - Web Shell
  • T1203 - Exploitation for Client Execution
  • T1071.001 - Web Protocols
MITREへのリンク →

Ember Bear

Score: 3.26
Matched TTPs:
  • T1505.003 - Web Shell
  • T1203 - Exploitation for Client Execution
MITREへのリンク →

HAFNIUM

Score: 7.09
Matched TTPs:
  • T1505.003 - Web Shell
  • T1071.001 - Web Protocols
  • T1550.001 - Application Access Token
MITREへのリンク →

Sandworm Team

Score: 9.77
Matched TTPs:
  • T1505.003 - Web Shell
  • T1195.002 - Compromise Software Supply Chain
  • T1102.002 - Bidirectional Communication
  • T1203 - Exploitation for Client Execution
  • T1071.001 - Web Protocols
MITREへのリンク →

Fox Kitten

Score: 3.41
Matched TTPs:
  • T1505.003 - Web Shell
  • T1021.001 - Remote Desktop Protocol
MITREへのリンク →

Tonto Team

Score: 3.26
Matched TTPs:
  • T1505.003 - Web Shell
  • T1203 - Exploitation for Client Execution
MITREへのリンク →

Volt Typhoon

Score: 7.55
Matched TTPs:
  • T1505.003 - Web Shell
  • T1614 - System Location Discovery
  • T1021.001 - Remote Desktop Protocol
MITREへのリンク →

APT38

Score: 10.93
Matched TTPs:
  • T1505.003 - Web Shell
  • T1218.001 - Compiled HTML File
  • T1071.001 - Web Protocols
  • T1036.006 - Space after Filename
MITREへのリンク →

APT29

Score: 11.64
Matched TTPs:
  • T1505.003 - Web Shell
  • T1550.003 - Pass the Ticket
  • T1203 - Exploitation for Client Execution
  • T1027.006 - HTML Smuggling
MITREへのリンク →

Magic Hound

Score: 7.00
Matched TTPs:
  • T1505.003 - Web Shell
  • T1102.002 - Bidirectional Communication
  • T1071.001 - Web Protocols
  • T1021.001 - Remote Desktop Protocol
MITREへのリンク →

BlackByte

Score: 4.60
Matched TTPs:
  • T1505.003 - Web Shell
  • T1071.001 - Web Protocols
  • T1021.001 - Remote Desktop Protocol
MITREへのリンク →

APT5

Score: 3.41
Matched TTPs:
  • T1505.003 - Web Shell
  • T1021.001 - Remote Desktop Protocol
MITREへのリンク →

APT32

Score: 11.04
Matched TTPs:
  • T1505.003 - Web Shell
  • T1550.003 - Pass the Ticket
  • T1203 - Exploitation for Client Execution
  • T1071.001 - Web Protocols
  • T1048.003 - Exfiltration Over Unencrypted Non-C2 Protocol
MITREへのリンク →

Medusa Group

Score: 4.60
Matched TTPs:
  • T1505.003 - Web Shell
  • T1071.001 - Web Protocols
  • T1021.001 - Remote Desktop Protocol
MITREへのリンク →

Leviathan

Score: 8.06
Matched TTPs:
  • T1505.003 - Web Shell
  • T1203 - Exploitation for Client Execution
  • T1021.001 - Remote Desktop Protocol
  • T1027.015 - Compression
MITREへのリンク →

Sea Turtle

Score: 4.45
Matched TTPs:
  • T1505.003 - Web Shell
  • T1203 - Exploitation for Client Execution
  • T1071.001 - Web Protocols
MITREへのリンク →

Kimsuky

Score: 10.28
Matched TTPs:
  • T1505.003 - Web Shell
  • T1102.002 - Bidirectional Communication
  • T1071.001 - Web Protocols
  • T1021.001 - Remote Desktop Protocol
  • T1102.001 - Dead Drop Resolver
MITREへのリンク →

BRONZE BUTLER

Score: 9.81
Matched TTPs:
  • T1550.003 - Pass the Ticket
  • T1203 - Exploitation for Client Execution
  • T1071.001 - Web Protocols
  • T1102.001 - Dead Drop Resolver
MITREへのリンク →

Dark Caracal

Score: 4.63
Matched TTPs:
  • T1218.001 - Compiled HTML File
  • T1071.001 - Web Protocols
MITREへのリンク →

Silence

Score: 5.09
Matched TTPs:
  • T1218.001 - Compiled HTML File
  • T1021.001 - Remote Desktop Protocol
MITREへのリンク →

APT41

Score: 17.42
Matched TTPs:
  • T1218.001 - Compiled HTML File
  • T1195.002 - Compromise Software Supply Chain
  • T1203 - Exploitation for Client Execution
  • T1030 - Data Transfer Size Limits
  • T1071.001 - Web Protocols
  • T1021.001 - Remote Desktop Protocol
  • T1102.001 - Dead Drop Resolver
MITREへのリンク →

Cobalt Group

Score: 7.26
Matched TTPs:
  • T1195.002 - Compromise Software Supply Chain
  • T1203 - Exploitation for Client Execution
  • T1071.001 - Web Protocols
  • T1021.001 - Remote Desktop Protocol
MITREへのリンク →

Daggerfly

Score: 4.12
Matched TTPs:
  • T1195.002 - Compromise Software Supply Chain
  • T1071.001 - Web Protocols
MITREへのリンク →

Moonstone Sleet

Score: 4.12
Matched TTPs:
  • T1195.002 - Compromise Software Supply Chain
  • T1071.001 - Web Protocols
MITREへのリンク →

FIN7

Score: 6.97
Matched TTPs:
  • T1195.002 - Compromise Software Supply Chain
  • T1102.002 - Bidirectional Communication
  • T1021.001 - Remote Desktop Protocol
MITREへのリンク →

APT37

Score: 5.08
Matched TTPs:
  • T1102.002 - Bidirectional Communication
  • T1203 - Exploitation for Client Execution
  • T1071.001 - Web Protocols
MITREへのリンク →

Lazarus Group

Score: 13.61
Matched TTPs:
  • T1102.002 - Bidirectional Communication
  • T1203 - Exploitation for Client Execution
  • T1071.001 - Web Protocols
  • T1027.007 - Dynamic API Resolution
  • T1021.001 - Remote Desktop Protocol
  • T1048.003 - Exfiltration Over Unencrypted Non-C2 Protocol
MITREへのリンク →

APT12

Score: 3.89
Matched TTPs:
  • T1102.002 - Bidirectional Communication
  • T1203 - Exploitation for Client Execution
MITREへのリンク →

Turla

Score: 3.59
Matched TTPs:
  • T1102.002 - Bidirectional Communication
  • T1071.001 - Web Protocols
MITREへのリンク →

HEXANE

Score: 4.05
Matched TTPs:
  • T1102.002 - Bidirectional Communication
  • T1021.001 - Remote Desktop Protocol
MITREへのリンク →

MuddyWater

Score: 5.08
Matched TTPs:
  • T1102.002 - Bidirectional Communication
  • T1203 - Exploitation for Client Execution
  • T1071.001 - Web Protocols
MITREへのリンク →

Gamaredon Group

Score: 6.74
Matched TTPs:
  • T1102.002 - Bidirectional Communication
  • T1071.001 - Web Protocols
  • T1027.015 - Compression
MITREへのリンク →

Patchwork

Score: 6.43
Matched TTPs:
  • T1203 - Exploitation for Client Execution
  • T1021.001 - Remote Desktop Protocol
  • T1102.001 - Dead Drop Resolver
MITREへのリンク →

Axiom

Score: 7.68
Matched TTPs:
  • T1203 - Exploitation for Client Execution
  • T1021.001 - Remote Desktop Protocol
  • T1001.002 - Steganography
MITREへのリンク →

Higaisa

Score: 5.83
Matched TTPs:
  • T1203 - Exploitation for Client Execution
  • T1071.001 - Web Protocols
  • T1027.015 - Compression
MITREへのリンク →

APT3

Score: 3.14
Matched TTPs:
  • T1203 - Exploitation for Client Execution
  • T1021.001 - Remote Desktop Protocol
MITREへのリンク →

APT33

Score: 5.43
Matched TTPs:
  • T1203 - Exploitation for Client Execution
  • T1071.001 - Web Protocols
  • T1048.003 - Exfiltration Over Unencrypted Non-C2 Protocol
MITREへのリンク →

Play

Score: 3.44
Matched TTPs:
  • T1030 - Data Transfer Size Limits
MITREへのリンク →

LuminousMoth

Score: 4.63
Matched TTPs:
  • T1030 - Data Transfer Size Limits
  • T1071.001 - Web Protocols
MITREへのリンク →

SideCopy

Score: 4.13
Matched TTPs:
  • T1614 - System Location Discovery
MITREへのリンク →

Wizard Spider

Score: 5.58
Matched TTPs:
  • T1071.001 - Web Protocols
  • T1021.001 - Remote Desktop Protocol
  • T1048.003 - Exfiltration Over Unencrypted Non-C2 Protocol
MITREへのリンク →

FIN8

Score: 5.58
Matched TTPs:
  • T1071.001 - Web Protocols
  • T1021.001 - Remote Desktop Protocol
  • T1048.003 - Exfiltration Over Unencrypted Non-C2 Protocol
MITREへのリンク →

Rocke

Score: 4.47
Matched TTPs:
  • T1071.001 - Web Protocols
  • T1102.001 - Dead Drop Resolver
MITREへのリンク →

Equation

Score: 4.13
Matched TTPs:
  • T1564.005 - Hidden File System
MITREへのリンク →

Strider

Score: 4.13
Matched TTPs:
  • T1564.005 - Hidden File System
MITREへのリンク →

FIN6

Score: 4.39
Matched TTPs:
  • T1021.001 - Remote Desktop Protocol
  • T1048.003 - Exfiltration Over Unencrypted Non-C2 Protocol
MITREへのリンク →

Blue Mockingbird

Score: 6.19
Matched TTPs:
  • T1021.001 - Remote Desktop Protocol
  • T1574.012 - COR_PROFILER
MITREへのリンク →

RTM

Score: 3.29
Matched TTPs:
  • T1102.001 - Dead Drop Resolver
MITREへのリンク →

Molerats

Score: 3.15
Matched TTPs:
  • T1027.015 - Compression
MITREへのリンク →

TA2541

Score: 3.15
Matched TTPs:
  • T1027.015 - Compression
MITREへのリンク →

Mofang

Score: 3.15
Matched TTPs:
  • T1027.015 - Compression
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)

APT28

Score: 0.78
Matched TTPs:
  • T1550.001 - Application Access Token
  • T1137.002 - Office Test
  • T1203 - Exploitation for Client Execution
  • T1030 - Data Transfer Size Limits
  • T1102.002 - Bidirectional Communication
  • T1071.001 - Web Protocols
  • T1505.003 - Web Shell
MITREへのリンク →

APT41

Score: 0.71
Matched TTPs:
  • T1102.001 - Dead Drop Resolver
  • T1218.001 - Compiled HTML File
  • T1195.002 - Compromise Software Supply Chain
  • T1203 - Exploitation for Client Execution
  • T1030 - Data Transfer Size Limits
  • T1021.001 - Remote Desktop Protocol
  • T1071.001 - Web Protocols
MITREへのリンク →

OilRig

Score: 0.68
Matched TTPs:
  • T1218.001 - Compiled HTML File
  • T1203 - Exploitation for Client Execution
  • T1137.004 - Outlook Home Page
  • T1021.001 - Remote Desktop Protocol
  • T1071.001 - Web Protocols
  • T1505.003 - Web Shell
  • T1048.003 - Exfiltration Over Unencrypted Non-C2 Protocol
MITREへのリンク →

Threat Group-3390

Score: 0.61
Matched TTPs:
  • T1195.002 - Compromise Software Supply Chain
  • T1203 - Exploitation for Client Execution
  • T1030 - Data Transfer Size Limits
  • T1027.015 - Compression
  • T1071.001 - Web Protocols
  • T1505.003 - Web Shell
MITREへのリンク →

Lazarus Group

Score: 0.57
Matched TTPs:
  • T1203 - Exploitation for Client Execution
  • T1027.007 - Dynamic API Resolution
  • T1102.002 - Bidirectional Communication
  • T1021.001 - Remote Desktop Protocol
  • T1071.001 - Web Protocols
  • T1048.003 - Exfiltration Over Unencrypted Non-C2 Protocol
MITREへのリンク →

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