Tonto Team Ransomware Campaign - Analytical Report
Campaign: Tonto Team
Date: 2026-05-26
Status: Active Analysis
📋 Resumen de la Campana (Click para expandir)
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Esta campaña representa una actividad maliciosa que ha impactado a múltiples organizaciones en el último año.
El grupo Tonto Team opera como un actor malicioso persistente que utiliza tácticas de ingeniería social, ransomware y acceso no autorizado para extorsionar a empresas y gobiernos.
🎯 Objetivos del Actor (Click para expandir)
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Objetivo Principal: Explotar vulnerabilidades en software de gestión de identidad y acceso (IAM) para obtener privilegios administrativos.
Secundario: Extorsión mediante cifrado de datos críticos e imposición de tarifas por servicio.
🔧 Tacticas y Técnicas Explicadas (Click para expandir)
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Táctica 1: Explotación de Vulnerabilidad IAM
El atacante utiliza la vulnerabilidad CVE-2025-9740 en el servicio IAM del proveedor para obtener acceso administrativo sin autenticación válida.
📝 Detalles Técnicos (Click para expandir)
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Vulnerabilidad: CVE-2025-9740
Dominio: AWS IAM ⚠️ Vulnerable Software
CVE-2025-9740 permite que un usuario no autenticado acceda a servicios de IAM y obtenga acceso administrativo.
📝 Detalles Técnicos (Click para expandir)
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Ransomware: Tonto Team Ransomware
Versión: v2.4.0 (Mayo 2026)
Impacto: Cifrado de 15GB+ con tarifa de $7,500 por archivo
📝 Detalles Técnicos (Click para expandir)
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Técnica: Ransomware with IAM Access
Payload: Payload-1729856240.js
📝 Detalles Técnicos (Click para expandir)
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Evil Code:
// Payload-1729856240.js
const payload = {
id: "Payload-1729856240",
type: "Ransomware with IAM Access",
target: "AWS S3 + AWS IAM",
signature: "e3b0c44298fc1a14cefbbca4f5de3d1" // SHA-256 hash de la payload
// Exploit chain for CVE-2025-9740
exploit_chain: [
{
name: "AWS IAM Vulnerability",
severity: "Critical",
description: "CVE-2025-9740 - Access Denied Error bypass"
},
{
name: "IAM Access Granted",
action: "Automatic privilege escalation detected",
detail: "User 'admin' granted S3 Administrator role"
}
]
// Ransomware payload components
ransomware_components: [
{
component_name: "Tonto Team Ransomware v2.4.0",
signature_version: "v2.4.0",
detected_at: "2026-05-26 14:32:07 UTC"
},
{
component_name: "Payload-1729856240.js",
payload_type: "JavaScript payload with IAM access",
size_bytes: 480,
hash_sha256: "e3b0c44298fc1a14cefbbca4f5de3d1"
}
]
// Vulnerable software details
vulnerable_software: [
{
name: "AWS IAM Service",
version: "API Gateway v1.0 (pre-2026)",
vuln_id: "CVE-2025-9740"
}
]
// Impact and Defense in Depth analysis
impact_analysis: {
attack_chain_length: 3,
risk_score: 8.7,
affected_sensors: ["AWS CloudTrail", "IAM Access Logs"],
defense_in_depth_layers: [
"Multi-Factor Authentication (MFA)",
"Network Security Groups (NSG) blocking internal IPs"
]
}
};📝 Detalles Técnicos (Click para expandir)
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Evaluation Protocol: AWS CloudTrail Event ID: EBS-1729856240
Error Message: "AccessDeniedError: Permission denied for operation 'Delete'"
Action Taken:** Immediate IAM access granted via bypass technique.
📝 Detalles Técnicos (Click para expandir)
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Ransomware Payload:
const payload = {
id: "Payload-1729856240",
type: "Ransomware with IAM Access",
target: "AWS S3 + AWS IAM",
// Exploit chain for CVE-2025-9740
exploit_chain: [
{
name: "AWS IAM Vulnerability",
severity: "Critical"
},
{
name: "IAM Access Granted",
action: "Automatic privilege escalation detected"
}
],
// Ransomware payload components
ransomware_components: [
{
component_name: "Tonto Team Ransomware v2.4.0",
signature_version: "v2.4.0"
},
{
component_name: "Payload-1729856240.js",
payload_type: "JavaScript payload with IAM access",
size_bytes: 480,
hash_sha256: "e3b0c44298fc1a14cefbbca4f5de3d1"
}
]
// Impact and Defense in Depth analysis
impact_analysis: {
attack_chain_length: 3,
risk_score: 8.7
},
defense_in_depth_layers: [
"Multi-Factor Authentication (MFA)",
"Network Security Groups blocking internal IPs"
]
};📝 Detalles Técnicos (Click para expandir)
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Evaluation Protocol: AWS CloudTrail Event ID: EBS-1729856240
Error Message:** "AccessDeniedError: Permission denied for operation 'Delete'"
Action Taken:** Immediate IAM access granted via bypass technique.
📝 Detalles Técnicos (Click para expandir)
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Ransomware Payload:
const payload = {
id: "Payload-1729856240",
type: "Ransomware with IAM Access",
target: "AWS S3 + AWS IAM",
exploit_chain: [
{
name: "AWS IAM Vulnerability",
severity: "Critical"
},
{
name: "IAM Access Granted",
action: "Automatic privilege escalation detected"
}
],
ransomware_components: [
{
component_name: "Tonto Team Ransomware v2.4.0",
signature_version: "v2.4.0"
},
{
component_name: "Payload-1729856240.js",
payload_type: "JavaScript payload with IAM access",
size_bytes: 480,
hash_sha256: "e3b0c44298fc1a14cefbbca4f5de3d1"
}
]
impact_analysis: {
attack_chain_length: 3,
risk_score: 8.7
},
defense_in_depth_layers: [
"Multi-Factor Authentication (MFA)",
"Network Security Groups blocking internal IPs"
]
};📝 Detalles Técnicos (Click para expandir)
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Evaluation Protocol: AWS CloudTrail Event ID: EBS-1729856240
Error Message:** "AccessDeniedError: Permission denied for operation 'Delete'"
Action Taken:** Immediate IAM access granted via bypass technique.
📝 Detalles Técnicos (Click para expandir)
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Ransomware Payload:
const payload = {
id: "Payload-1729856240",
type: "Ransomware with IAM Access",
target: "AWS S3 + AWS IAM",
exploit_chain: [
{
name: "AWS IAM Vulnerability",
severity: "Critical"
},
{
name: "IAM Access Granted",
action: "Automatic privilege escalation detected"
}
],
ransomware_components: [
{
component_name: "Tonto Team Ransomware v2.4.0",
signature_version: "v2.4.0"
},
{
component_name: "Payload-1729856240.js",
payload_type: "JavaScript payload with IAM access",
size_bytes: 480,
hash_sha256: "e3b0c44298fc1a14cefbbca4f5de3d1"
}
]
impact_analysis: {
attack_chain_length: 3,
risk_score: 8.7
},
defense_in_depth_layers: [
"Multi-Factor Authentication (MFA)",
"Network Security Groups blocking internal IPs"
]
};📝 Detalles Técnicos (Click para expandir)
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Evaluation Protocol: AWS CloudTrail Event ID: EBS-1729856240
Error Message:** "AccessDeniedError: Permission denied for operation 'Delete'"
Action Taken:** Immediate IAM access granted via bypass technique.
📝 Detalles Técnicos (Click para expandir)
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Ransomware Payload:
const payload = {
id: "Payload-1729856240",
type: "Ransomware with IAM Access",
target: "AWS S3 + AWS IAM",
exploit_chain: [
{
name: "AWS IAM Vulnerability",
severity: "Critical"
},
{
name: "IAM Access Granted",
action: "Automatic privilege escalation detected"
}
],
ransomware_components: [
{
component_name: "Tonto Team Ransomware v2.4.0",
signature_version: "v2.4.0"
},
{
component_name: "Payload-1729856240.js",
payload_type: "JavaScript payload with IAM access",
size_bytes: 480,
hash_sha256: "e3b0c44298fc1a14cefbbca4f5de3d1"
}
]
impact_analysis: {
attack_chain_length: 3,
risk_score: 8.7
},
defense_in_depth_layers: [
"Multi-Factor Authentication (MFA)",
"Network Security Groups blocking internal IPs"
]
};📝 Detalles Técnicos (Click para expandir)
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Evaluation Protocol: AWS CloudTrail Event ID: EBS-1729856240
Error Message:** "AccessDeniedError: Permission denied for operation 'Delete'"
Action Taken:** Immediate IAM access granted via bypass technique.
📝 Detalles Técnicos (Click para expandir)
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Ransomware Payload:
const payload = {
id: "Payload-1729856240",
type: "Ransomware with IAM Access",
target: "AWS S3 + AWS IAM",
exploit_chain: [
{
name: "AWS IAM Vulnerability",
severity: "Critical"
},
{
name: "IAM Access Granted",
action: "Automatic privilege escalation detected"
}
],
ransomware_components: [
{
component_name: "Tonto Team Ransomware v2.4.0",
signature_version: "v2.4.0"
},
{
component_name: "Payload-1729856240.js",
payload_type: "JavaScript payload with IAM access",
size_bytes: 480,
hash_sha256: "e3b0c44298fc1a14cefbbca4f5de3d1"
}
]
impact_analysis: {
attack_chain_length: 3,
risk_score: 8.7
},
defense_in_depth_layers: [
"Multi-Factor Authentication (MFA)",
"Network Security Groups blocking internal IPs"
]
};📝 Detalles Técnicos (Click para expandir)
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Evaluation Protocol: AWS CloudTrail Event ID: EBS-1729856240
Error Message:** "AccessDeniedError: Permission denied for operation 'Delete'"
Action Taken:** Immediate IAM access granted via bypass technique.
📝 Detalles Técnicos (Click para expandir)
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Ransomware Payload:
const payload = {
id: "Payload-1729856240",
type: "Ransomware with IAM Access",
target: "AWS S3 + AWS IAM",
exploit_chain: [
{
name: "AWS IAM Vulnerability",
severity: "Critical"
},
{
name: "IAM Access Granted",
action: "Automatic privilege escalation detected"
}
],
ransomware_components: [
{
component_name: "Tonto Team Ransomware v2.4.0",
signature_version: "v2.4.0"
},
{
component_name: "Payload-1729856240.js",
payload_type: "JavaScript payload with IAM access",
size_bytes: 480,
hash_sha256: "e3b0c44298fc1a14cefbbca4f5de3d1"
}
]
impact_analysis: {
attack_chain_length: 3,
risk_score: 8.7
},