Threats & AttacksHigh
Remote Access Trojan (RAT)
A type of Trojan that provides attackers with remote control over infected systems, often used for surveillance and data theft
Skill Paths:
Malware AnalysisThreat IntelligenceIncident ResponseDigital Forensics
Job Paths:
Malware AnalystThreat Intelligence AnalystIncident ResponderDigital Forensics Examiner
Relevant Certifications:
GIAC GREMSANS FOR508CEHCompTIA Security+
Content
What is a Remote Access Trojan (RAT)?
A Remote Access Trojan (RAT) is a type of Trojan malware that allows attackers to remotely control infected systems. RATs are used for surveillance, data theft, espionage, and maintaining persistent access to compromised networks.
How RATs Work
Infection Methods
- Phishing emails – Malicious attachments or links
- Malicious downloads – Bundled with pirated or fake software
- Software vulnerabilities – Exploits in legitimate applications
- Drive-by downloads – Automatic downloads from compromised websites
Capabilities
- Remote desktop control – Full access to the victim's system
- File transfer – Upload and download files
- Keylogging – Record keystrokes
- Screen capture – Take screenshots
- Webcam/microphone access – Spy on users
- Credential theft – Steal usernames and passwords
- Persistence mechanisms – Survive reboots and detection
Detection and Prevention
- Antivirus/EDR – Use reputable security software
- Network monitoring – Watch for suspicious outbound connections
- Patch management – Keep systems updated
- User education – Avoid suspicious downloads and links
- Application whitelisting – Only allow approved software
Response and Removal
- Isolate infected systems – Prevent further compromise
- Quarantine and remove – Use security tools to remove RATs
- Change passwords – After removal, update all credentials
- Monitor for persistence – Check for backdoors and scheduled tasks
- Forensic analysis – Investigate the extent of compromise
Best Practices
- Download from trusted sources – Avoid third-party sites
- Regularly update software – Patch vulnerabilities
- Use strong authentication – Protect sensitive accounts
- Educate users – Raise awareness of RAT risks
- Implement incident response plans – Prepare for RAT incidents
Quick Facts
Severity Level
9/10
Goal
Provide remote control for surveillance, data theft, and persistence
Spread
Phishing, malicious downloads, software vulnerabilities
Detection
Network monitoring, endpoint protection, behavioral analysis
Impact
Data theft, espionage, system compromise
Related Terms