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Phishing Analysis

Detailed analysis of captured phishing page

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Visual Capture

Screenshot of grupocosaint.com.br

Detection Info

https://grupocosaint.com.br/zim/zimbra.html
Detected Brand
Zimbra
Country
Unknown
Confidence
95%
HTTP Status
200
Report ID
56fe2a1d-8e4…
Analyzed
2026-08-27 10:10

Content Hashes (HTML Similarity)

Used to detect similar phishing pages based on HTML content

Algorithm Hash Value
CONTENT TLSH
T16491B5104045AC7A858251C475A07F6427E883F5C313488DF8E9CF8E6EE6EE5E6533EA
CONTENT ssdeep
96:kSW+DZv4eX3hRdLmkAmO4Es7whV4C6j1c895:PX3pmka4dUhVB6C895

Visual Hashes (Screenshot Similarity)

Used to detect visually similar phishing pages based on screenshots

Algorithm Hash Value
VISUAL pHash
b3b3cccc33312666
VISUAL aHash
ffffe7c3e7ffffe7
VISUAL dHash
204d4d4d4d32040c
VISUAL wHash
ffffe7c3c3880000
VISUAL colorHash
070000001c0
VISUAL cropResistant
204d4d4d4d32040c,a0a0a2a0a2a2a2a2,0889b4b4b4f6b8b8

Code Analysis

Risk Score 63/100
Threat Level ALTO
⚠️ Phishing Confirmed
🎣 Credential Harvester

🔐 Credential Harvesting Forms

🔒 Obfuscation Detected

  • document.write

🎯 Kit Endpoints

  • http://blog.zimbra.com
  • https://iris.well.com/zimbra/css/common,login,zhtml,skin.css?skin=harmony&v=141215153341
  • login.php

📤 Form Action Targets

  • login.php

📊 Risk Score Breakdown

Total Risk Score
70/100

Contributing Factors

Active Phishing Kit
Detected kit types: Credential Harvester
Credential Harvesting
Credential harvesting detected with 1 form(s) capturing sensitive data
Code Obfuscation
JavaScript code obfuscated using 1 technique(s) to evade detection

🔬 Comprehensive Threat Analysis

Threat Type
Credential Harvesting Kit
Target
Zimbra users
Attack Method
credential harvesting forms + obfuscated JavaScript
Exfiltration Channel
HTTP POST to backend
Risk Assessment
HIGH - Automated credential harvesting with HTTP POST to backend

⚠️ Indicators of Compromise

  • Kit types: Credential Harvester
  • 1 obfuscation techniques

🏢 Brand Impersonation Analysis

Impersonated Brand
Zimbra
Official Website
N/A
Fake Service
Credential harvesting service

⚔️ Attack Methodology

Primary Method: Credential Harvesting

Victim enters username and password into fake login form. Credentials are captured via JavaScript and exfiltrated to attacker's server in real-time.

Secondary Method: JavaScript Obfuscation

Malicious code is obfuscated using 1 techniques to evade detection by security scanners and make reverse engineering more difficult.

🌐 Infrastructure Indicators of Compromise

Domain Information

Domain
grupocosaint.com.br
Registered
2019-03-28 00:00:00+00:00
Registrar
Unknown
Status
Active (older domain)

Hosting Information

Provider
Unknown
ASN

🤖 AI-Extracted Threat Intelligence

😰
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