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Version: 2.8.1

🚨 Badware Domain Access

Quick Explanation​

Quick Summary: The badware_domain_access recipe detects connections to domains associated with malware, spyware, or adware, indicating potential command-and-control (C2) activity. This detection suggests that recent code changes or dependencies in the CI/CD pipeline may introduce unauthorized communication with malicious infrastructure. Such activity could enable data exfiltration, remote code execution, or coordination with attacker-controlled servers, posing severe risks if deployed to production.

More Information​

📋 Detection Metadata​

Description: Access to malware, spyware or adware
Tactic: Command And Control
Technique: Application Layer Protocol
Sub-Technique: DNS
Importance: High

🔍 Event Analysis​

This event triggers when a process attempts to resolve or communicate with domains known to host malicious infrastructure. The detection uses DNS-layer analysis to identify connections to domains associated with malware distribution, spyware operations, or adware networks. These domains often serve as command-and-control (C2) nodes, enabling attackers to remotely control compromised systems, exfiltrate sensitive data, or deliver additional payloads.


In the context of MITRE ATT&CK, this aligns with Command and Control (TA0011), specifically the sub-technique Application Layer Protocol: DNS (T1071.004). Attackers frequently abuse DNS queries to bypass traditional network security controls, as DNS traffic is often permitted in restricted environments. The high importance rating reflects the high likelihood that such activity indicates an active compromise or the presence of malicious code attempting to establish persistence or exfiltrate data.


Within CI/CD pipelines, this detection could signal that a dependency, script, or newly introduced code is attempting to "phone home" to a malicious domain. This might occur through compromised third-party libraries, misconfigured services, or code intentionally designed to enable backdoor access. Real-world case studies have shown that attackers exploit supply chain vulnerabilities by compromising popular open-source repositories and embedding malicious code in legitimate packages.

💡 Security Implications​

🔄 CI/CD Pipeline​

🧪 Staging Environment​

🚀 Production Environment​

✅ CI/CD Actions​

  1. Audit and Review Dependencies: Immediately review all recent changes to the codebase, especially newly added or updated dependencies. Verify the integrity and origin of each dependency to ensure they are not compromised.
  2. Scan for Malicious Code: Utilize security scanning tools to analyze the entire codebase and dependencies for known vulnerabilities and malicious patterns. Pay special attention to any outbound network calls to unknown or suspicious domains.
  3. Enhance Monitoring and Logging: Implement or enhance monitoring of DNS queries and network traffic in the CI/CD pipeline to detect and alert on unusual activities, such as attempts to communicate with known malicious domains.
  4. Educate Development Teams: Conduct training sessions for developers on secure coding practices and the importance of using verified sources for third-party libraries and dependencies.

✅ Staging Actions​

  1. Isolate and Analyze: Temporarily isolate the staging environment from the network to prevent potential spread or escalation. Perform a thorough security audit and forensic analysis to identify how the malicious domain access occurred.
  2. Validate Configuration and Security Controls: Review and strengthen the staging environment's security controls, ensuring they align closely with production standards to prevent similar incidents.
  3. Simulate Attack Scenarios: Conduct red team exercises to simulate potential attack scenarios based on the detected event. Use the findings to improve defensive strategies and response plans.

✅ Production Actions​

  1. Immediate Containment: Act swiftly to contain any communication or data exchange with the identified malicious domains. Block the domains at the firewall or DNS level to prevent further data exfiltration or command and control communication.
  2. Incident Response: Activate the incident response plan, focusing on identifying the breach's extent, removing the attackers' access, and recovering any compromised systems.
  3. Post-Incident Analysis: After resolving the incident, conduct a detailed analysis to understand the attack vectors used and implement measures to prevent future occurrences.
  4. Regulatory Compliance and Notification: Review compliance requirements to determine if the incident needs to be reported to regulatory bodies or affected parties, and proceed accordingly.

🔗 Related Resources​