Bestafera Trojan (also known as Bestafera) is a banking trojan active since 2020. Brazilian banking trojan. Key characteristics include: Delphi-based, browser injection, banking overlays, Brazil-focused.
Overview & Background
Brazilian banking trojan. First identified in 2020, this threat is attributed to eCrime / Brazil.
Threat Assessment
Bestafera Trojan remains an active threat. Organizations should implement detection rules and monitor for indicators associated with this banking trojan.
- Category: Banking Trojan
- Active since: 2020
- Attribution: eCrime / Brazil
- Also known as: Bestafera
Technical Analysis
Bestafera Trojan employs the following capabilities and techniques:
- Delphi-Based: Core functionality
- Browser Injection: Core functionality
- Banking Overlays: Core functionality
- Brazil-Focused: Core functionality
MITRE ATT&CK Mapping
| Tactic | Technique | Usage |
|---|---|---|
| Initial Access | T1566.001 Phishing Attachment | Common delivery vector |
| Execution | T1204.002 Malicious File | User-triggered execution |
| Persistence | T1547.001 Registry Run Keys | Autostart persistence |
| Defense Evasion | T1027 Obfuscated Files | Payload obfuscation |
| C2 | T1071.001 Web Protocols | HTTP/HTTPS C2 |
Detection & Defense
- Endpoint detection: Deploy behavioral detection rules for Bestafera Trojan indicators
- Network monitoring: Monitor for C2 traffic patterns and anomalous connections
- Threat intelligence: Track Bestafera Trojan IOCs and campaign updates
- Security awareness: Train users to recognize phishing and social engineering
- Patch management: Keep systems updated to prevent exploitation
Defend Against Bestafera Trojan
Mjolnir Security provides detection and response capabilities against Bestafera Trojan and similar threats.
Threat DetectionIncident ResponseThreat HuntingMDR ServicesThreat Intelligence
- Proactive Threat Hunting Hunt for Bestafera Trojan indicators and TTPs within your environment.
- Threat Intelligence Monitor Bestafera Trojan campaigns and infrastructure changes.
- 24/7 Incident Response Rapid containment and forensic investigation. Call +1 833 403 5875.
Written by: Mjolnir Security | Published: August 25, 2025
Stay ahead of emerging threats. Get notified when we publish new intelligence reports and advisories.
Subscribe to Alerts