SafeMode - Analysis: smtp.natrajstonex.co.in

Captura Visual

Información de Detección

http://smtp.natrajstonex.co.in/

Detected Brand

Unknown

Country

International

Confianza

100%

HTTP Status

200

Report ID

bb62bb8b-a58…

Analyzed

2026-02-11 00:10

Hashes de Contenido (Similitud HTML)

Used to detect similar phishing pages based on HTML content

Algorithm	Hash Value
CONTENT TLSH	T1F49133215015AE3351E386F4B6DDDB6362EFC228CF802C5822FCC6AD0BD5C51A67B959
CONTENT ssdeep	96:yZ/OypIVgExhqBQE9tFMhTFk6aMhTtk6Yt:yZ/OBgihqQE9tFMhTFk6aMhTtk6k

Hashes Visuales (Similitud de Captura)

Used to detect visually similar phishing pages based on screenshots

Algorithm	Hash Value
VISUAL pHash	9999996666668b33
VISUAL aHash	1818181800000000
VISUAL dHash	b2b2b2b24c200000
VISUAL wHash	fcfcfcfc00000000
VISUAL colorHash	070000001c0
VISUAL cropResistant	a2a2e2a296a89696,b2b2b2b24c200000

Análisis de Código

Risk Score 85/100

Nivel de Amenaza ALTO

⚠️ Phishing Confirmed

🎣 Credential Harvester 🎣 OTP Stealer 🎣 Personal Info

🔬 Threat Analysis Report

• Amenaza: Phishing
• Objetivo: Credenciales
• Método: Impersonación
• Exfil: /?_task=login
• Indicadores: Dominio inusual, formulario genérico, ofuscación
• Riesgo: Alto

🔐 Credential Harvesting Forms

🔒 Obfuscation Detected

atob
eval
fromCharCode
unescape
document.write
unicode_escape
base64_strings

🎯 Kit Endpoints

http://idn.icann.org/E-mail_test)
https://mathiasbynens.be/notes/javascript-encoding
http://smtp.natrajstonex.co.in/program/js/common.js?s=1769006884
http://smtp.natrajstonex.co.in/plugins/skins/punycode.js?s=1728655216
/?_task=login
plugins/skins/login.css?s=1728655216
https://code.iamcal.com/php/rfc822/
http://smtp.natrajstonex.co.in/program/js/jstz.min.js?s=1769006884
https://rumkin.com
http://dev.rubyonrails.org/changeset/7271
https://mths.be/punycode
http://smtp.natrajstonex.co.in/skins/elastic/ui.js?s=1728679525
http://www.michaelapproved.com/articles/timezone-detect-and-ignore-daylight-saving-time-dst/
http://smtp.natrajstonex.co.in/program/js/app.js?s=1769006884
http://tools.ietf.org/html/rfc3492#section-3.4
http://creativecommons.org/licenses/by-sa/3.0/

📤 Form Action Targets

/?_task=login

📊 Desglose de Puntuación de Riesgo

Total Risk Score

90/100

Contributing Factors

Unusual Domain Name

The domain does not appear to be associated with any legitimate brand or service.

Generic Login Form

The login form lacks branding, making it highly suspicious.

JavaScript Obfuscation

Obfuscated Javascript is often used to hide malicious activity.

Form Submission

Form actions detected - likely exfiltration attempt

🔬 Análisis Integral de Amenazas

Tipo de Amenaza

Two-Factor Authentication Stealer

Objetivo

General public

Método de Ataque

credential harvesting forms + obfuscated JavaScript

Canal de Exfiltración

HTTP POST to backend

Evaluación de Riesgo

CRITICAL - Automated credential harvesting with HTTP POST to backend

⚠️ Indicators of Compromise

Kit types: Credential Harvester, OTP Stealer, Personal Info
67 obfuscation techniques

🏢 Análisis de Suplantación de Marca

Impersonated Brand

Unknown

Fake Service

Generic login (likely an attempt to steal credentials for various services)

⚔️ Metodología de Ataque

Primary Method: Credential Harvesting

The attacker is attempting to steal login credentials through a fake login form hosted on a suspicious domain. The form likely submits the stolen credentials to the attacker.

🌐 Indicadores de Compromiso de Infraestructura

🦠 Malicious Files

Main File

common.js?s=1769006884

File Size

Functions: enable_command_handler, http_post, http_request, rcmail.login, rcmail.send_mail, $('form').submit(function () { ... })

📊 Diagrama de Flujo de Ataque

1. Step 1: User visits cloned Roundcube Webmail site (natrajstonex.co.in)
2. Step 2: User enters credentials in the login form (#rcmloginuser, #rcmloginpwd)
3. Step 3: Form submission is intercepted via $('form').submit() handler
4. Step 4: Credentials are captured and sent via http_post or http_request to the attacker's server
5. Step 5: User is potentially redirected to the legitimate Roundcube Webmail or shown a fake error to avoid suspicion

🔬 JavaScript Deep Analysis

Operator Language

English (1%)

Total Code Size

505,1 KB

🔗 API Endpoints Detected

Other

9

🔐 Obfuscation Detected

: Moderate
: Light
: Light
: None
: Light

🤖 AI-Extracted Threat Intelligence

📊 Attack Flow

1. Step 1: User visits cloned Roundcube Webmail site (natrajstonex.co.in)
2. Step 2: User enters credentials in the login form (#rcmloginuser, #rcmloginpwd)
3. Step 3: Form submission is intercepted via $('form').submit() handler
4. Step 4: Credentials are captured and sent via http_post or http_request to the attacker's server
5. Step 5: User is potentially redirected to the legitimate Roundcube Webmail or shown a fake error to avoid suspicion