Trusted Design

Braincrypt Ransomware

概要

This ransomware encrypts files and uses .braincrypt as file name extension for encrypted files. It leaves a ransom note with the following filename: !!! how to decrypt files !!!.txt The ransom note contains the following text: YOUR FILES WERE ENCRYPTED. TO DECRYPT FILES, PLEASE, CONTACT US WRITING ON THIS EMAIL: headlessbuild@india.com YOUR PERSONAL ID: <Personal ID of your computer, for example: 4df7065b1d049d098526344faaabf3f8> This ransomware is developed using the Go programming language. It connects to a certain URL, likely controlled by the attacker, using a specific Go user-agent: URL: hxxp:// alex-luthor. myjino .ru/ htdocs/gateway/gate.php?uuid=<Personal ID of your computer, for example: 4df7065b1d049d098526344faaabf3f8> User-agent: Go-http-client/1.1 The ransomware makes this connection presumably to report that your computer has been compromised. However, during analysis, the URL is inaccessible.

Created: 2026-02-23

Indicators

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このPulseに関連する脅威アクター (事実ベース)

FIN6

Score: 7.65
Matched TTPs:
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CopyKittens

Score: 3.15
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Mustang Panda

Score: 9.70
Matched TTPs:
  • T1560.003 - Archive via Custom Method
  • T1583.006 - Web Services
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Kimsuky

Score: 13.10
Matched TTPs:
  • T1560.003 - Archive via Custom Method
  • T1036.004 - Masquerade Task or Service
  • T1583.006 - Web Services
  • T1102.002 - Bidirectional Communication
  • T1585 - Establish Accounts
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UNC3886

Score: 5.25
Matched TTPs:
  • T1560.003 - Archive via Custom Method
  • T1036.004 - Masquerade Task or Service
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Lotus Blossom

Score: 3.15
Matched TTPs:
  • T1560.003 - Archive via Custom Method
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Lazarus Group

Score: 14.89
Matched TTPs:
  • T1560.003 - Archive via Custom Method
  • T1036.004 - Masquerade Task or Service
  • T1583.006 - Web Services
  • T1571 - Non-Standard Port
  • T1102.002 - Bidirectional Communication
  • T1584.004 - Server
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Higaisa

Score: 9.79
Matched TTPs:
  • T1029 - Scheduled Transfer
  • T1036.004 - Masquerade Task or Service
  • T1027.015 - Compression
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APT29

Score: 10.40
Matched TTPs:
  • T1550.003 - Pass the Ticket
  • T1583.006 - Web Services
  • T1090.004 - Domain Fronting
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APT32

Score: 12.75
Matched TTPs:
  • T1550.003 - Pass the Ticket
  • T1036.004 - Masquerade Task or Service
  • T1583.006 - Web Services
  • T1571 - Non-Standard Port
  • T1569.002 - Service Execution
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BRONZE BUTLER

Score: 3.84
Matched TTPs:
  • T1550.003 - Pass the Ticket
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Carbanak

Score: 4.49
Matched TTPs:
  • T1036.004 - Masquerade Task or Service
  • T1102.002 - Bidirectional Communication
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FIN7

Score: 16.57
Matched TTPs:
  • T1036.004 - Masquerade Task or Service
  • T1583.006 - Web Services
  • T1571 - Non-Standard Port
  • T1486 - Data Encrypted for Impact
  • T1195.002 - Compromise Software Supply Chain
  • T1102.002 - Bidirectional Communication
  • T1569.002 - Service Execution
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APT-C-36

Score: 4.49
Matched TTPs:
  • T1036.004 - Masquerade Task or Service
  • T1571 - Non-Standard Port
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Wizard Spider

Score: 4.49
Matched TTPs:
  • T1036.004 - Masquerade Task or Service
  • T1569.002 - Service Execution
MITREへのリンク →

Fox Kitten

Score: 5.53
Matched TTPs:
  • T1036.004 - Masquerade Task or Service
  • T1585 - Establish Accounts
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ZIRCONIUM

Score: 6.51
Matched TTPs:
  • T1036.004 - Masquerade Task or Service
  • T1583.006 - Web Services
  • T1102.002 - Bidirectional Communication
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Magic Hound

Score: 11.24
Matched TTPs:
  • T1036.004 - Masquerade Task or Service
  • T1583.006 - Web Services
  • T1571 - Non-Standard Port
  • T1486 - Data Encrypted for Impact
  • T1102.002 - Bidirectional Communication
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Storm-0501

Score: 8.06
Matched TTPs:
  • T1036.004 - Masquerade Task or Service
  • T1486 - Data Encrypted for Impact
  • T1614.001 - System Language Discovery
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APT41

Score: 9.76
Matched TTPs:
  • T1036.004 - Masquerade Task or Service
  • T1486 - Data Encrypted for Impact
  • T1195.002 - Compromise Software Supply Chain
  • T1569.002 - Service Execution
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Earth Lusca

Score: 4.85
Matched TTPs:
  • T1583.006 - Web Services
  • T1584.004 - Server
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HAFNIUM

Score: 6.14
Matched TTPs:
  • T1583.006 - Web Services
  • T1550.001 - Application Access Token
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Contagious Interview

Score: 12.39
Matched TTPs:
  • T1583.006 - Web Services
  • T1571 - Non-Standard Port
  • T1585 - Establish Accounts
  • T1543.001 - Launch Agent
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Medusa Group

Score: 11.29
Matched TTPs:
  • T1583.006 - Web Services
  • T1486 - Data Encrypted for Impact
  • T1569.002 - Service Execution
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Turla

Score: 7.24
Matched TTPs:
  • T1583.006 - Web Services
  • T1102.002 - Bidirectional Communication
  • T1584.004 - Server
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APT17

Score: 5.45
Matched TTPs:
  • T1583.006 - Web Services
  • T1585 - Establish Accounts
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MuddyWater

Score: 4.41
Matched TTPs:
  • T1583.006 - Web Services
  • T1102.002 - Bidirectional Communication
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APT28

Score: 16.93
Matched TTPs:
  • T1583.006 - Web Services
  • T1048.002 - Exfiltration Over Asymmetric Encrypted Non-C2 Protocol
  • T1102.002 - Bidirectional Communication
  • T1550.001 - Application Access Token
  • T1669 - Wi-Fi Networks
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Gamaredon Group

Score: 14.50
Matched TTPs:
  • T1583.006 - Web Services
  • T1001 - Data Obfuscation
  • T1571 - Non-Standard Port
  • T1102.002 - Bidirectional Communication
  • T1027.015 - Compression
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POLONIUM

Score: 4.41
Matched TTPs:
  • T1583.006 - Web Services
  • T1102.002 - Bidirectional Communication
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TA2541

Score: 5.16
Matched TTPs:
  • T1583.006 - Web Services
  • T1027.015 - Compression
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CURIUM

Score: 3.84
Matched TTPs:
  • T1048.002 - Exfiltration Over Asymmetric Encrypted Non-C2 Protocol
MITREへのリンク →

Storm-1811

Score: 6.19
Matched TTPs:
  • T1048.002 - Exfiltration Over Asymmetric Encrypted Non-C2 Protocol
  • T1486 - Data Encrypted for Impact
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Silence

Score: 4.80
Matched TTPs:
  • T1571 - Non-Standard Port
  • T1569.002 - Service Execution
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Ember Bear

Score: 5.84
Matched TTPs:
  • T1571 - Non-Standard Port
  • T1585 - Establish Accounts
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Velvet Ant

Score: 4.80
Matched TTPs:
  • T1571 - Non-Standard Port
  • T1569.002 - Service Execution
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Sandworm Team

Score: 12.90
Matched TTPs:
  • T1571 - Non-Standard Port
  • T1486 - Data Encrypted for Impact
  • T1195.002 - Compromise Software Supply Chain
  • T1102.002 - Bidirectional Communication
  • T1584.004 - Server
MITREへのリンク →

APT38

Score: 4.74
Matched TTPs:
  • T1486 - Data Encrypted for Impact
  • T1569.002 - Service Execution
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INC Ransom

Score: 4.74
Matched TTPs:
  • T1486 - Data Encrypted for Impact
  • T1569.002 - Service Execution
MITREへのリンク →

Indrik Spider

Score: 5.17
Matched TTPs:
  • T1486 - Data Encrypted for Impact
  • T1584.004 - Server
MITREへのリンク →

BlackByte

Score: 8.36
Matched TTPs:
  • T1486 - Data Encrypted for Impact
  • T1614.001 - System Language Discovery
  • T1569.002 - Service Execution
MITREへのリンク →

Moonstone Sleet

Score: 7.67
Matched TTPs:
  • T1486 - Data Encrypted for Impact
  • T1195.002 - Compromise Software Supply Chain
  • T1569.002 - Service Execution
MITREへのリンク →

Dragonfly

Score: 5.76
Matched TTPs:
  • T1195.002 - Compromise Software Supply Chain
  • T1584.004 - Server
MITREへのリンク →

Threat Group-3390

Score: 6.08
Matched TTPs:
  • T1195.002 - Compromise Software Supply Chain
  • T1027.015 - Compression
MITREへのリンク →

Daggerfly

Score: 5.76
Matched TTPs:
  • T1195.002 - Compromise Software Supply Chain
  • T1584.004 - Server
MITREへのリンク →

APT39

Score: 4.80
Matched TTPs:
  • T1102.002 - Bidirectional Communication
  • T1569.002 - Service Execution
MITREへのリンク →

Ke3chang

Score: 6.02
Matched TTPs:
  • T1614.001 - System Language Discovery
  • T1569.002 - Service Execution
MITREへのリンク →

Malteiro

Score: 3.62
Matched TTPs:
  • T1614.001 - System Language Discovery
MITREへのリンク →

Leviathan

Score: 5.98
Matched TTPs:
  • T1584.004 - Server
  • T1027.015 - Compression
MITREへのリンク →

Molerats

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: 0.80
Matched TTPs:
  • T1583.006 - Web Services
  • T1048.002 - Exfiltration Over Asymmetric Encrypted Non-C2 Protocol
  • T1550.001 - Application Access Token
  • T1102.002 - Bidirectional Communication
  • T1669 - Wi-Fi Networks
MITREへのリンク →

FIN7

Score: 0.79
Matched TTPs:
  • T1583.006 - Web Services
  • T1036.004 - Masquerade Task or Service
  • T1571 - Non-Standard Port
  • T1569.002 - Service Execution
  • T1195.002 - Compromise Software Supply Chain
  • T1486 - Data Encrypted for Impact
  • T1102.002 - Bidirectional Communication
MITREへのリンク →

Gamaredon Group

Score: 0.71
Matched TTPs:
  • T1583.006 - Web Services
  • T1571 - Non-Standard Port
  • T1027.015 - Compression
  • T1001 - Data Obfuscation
  • T1102.002 - Bidirectional Communication
MITREへのリンク →

Lazarus Group

Score: 0.69
Matched TTPs:
  • T1583.006 - Web Services
  • T1036.004 - Masquerade Task or Service
  • T1571 - Non-Standard Port
  • T1584.004 - Server
  • T1560.003 - Archive via Custom Method
  • T1102.002 - Bidirectional Communication
MITREへのリンク →

Sandworm Team

Score: 0.63
Matched TTPs:
  • T1571 - Non-Standard Port
  • T1195.002 - Compromise Software Supply Chain
  • T1584.004 - Server
  • T1486 - Data Encrypted for Impact
  • T1102.002 - Bidirectional Communication
MITREへのリンク →

Kimsuky

Score: 0.62
Matched TTPs:
  • T1585 - Establish Accounts
  • T1583.006 - Web Services
  • T1036.004 - Masquerade Task or Service
  • T1560.003 - Archive via Custom Method
  • T1102.002 - Bidirectional Communication
MITREへのリンク →

APT32

Score: 0.61
Matched TTPs:
  • T1550.003 - Pass the Ticket
  • T1583.006 - Web Services
  • T1036.004 - Masquerade Task or Service
  • T1571 - Non-Standard Port
  • T1569.002 - Service Execution
MITREへのリンク →

Contagious Interview

Score: 0.58
Matched TTPs:
  • T1585 - Establish Accounts
  • T1583.006 - Web Services
  • T1543.001 - Launch Agent
  • T1571 - Non-Standard Port
MITREへのリンク →

Medusa Group

Score: 0.58
Matched TTPs:
  • T1218.014 - MMC
  • T1486 - Data Encrypted for Impact
  • T1583.006 - Web Services
  • T1569.002 - Service Execution
MITREへのリンク →

Magic Hound

Score: 0.57
Matched TTPs:
  • T1583.006 - Web Services
  • T1036.004 - Masquerade Task or Service
  • T1571 - Non-Standard Port
  • T1486 - Data Encrypted for Impact
  • T1102.002 - Bidirectional Communication
MITREへのリンク →

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