Excessive number of HTTP failures to a suspicious destination
Description
AlphaSOC detected an unusually high number of HTTP failures to an uncommon destination. This pattern could indicate reconnaissance activities, where a threat actor is probing for vulnerabilities or attempting to exploit a web-based service. It may also suggest a misconfigured application, malware communication attempts, or a compromised system trying to contact a command and control server using HTTP.
Impact
This activity could be a precursor to more severe attacks, including data exfiltration, malware installation, or lateral movement within the network. If successful, the adversary could gain unauthorized access to sensitive information, disrupt services, or establish a foothold for further malicious activities. It may also indicate an already compromised system attempting to communicate with its control infrastructure.
Severity
| Severity | Condition |
|---|---|
Low | Excessive number of HTTP failures to an uncommon destination |
Medium | Excessive number of HTTP failures to a suspicious destination |
High | Excessive number of HTTP failures to a blocklisted domain or IP |
High | Excessive number of HTTP failures to known malicious domain |
Investigation and Remediation
Investigate the source of these HTTP requests and the nature of the uncommon destination. Analyze logs to identify patterns in the failed requests. Check if the destination IP or domain is associated with known threats. Examine the affected system for signs of compromise or misconfiguration. If malicious activity is confirmed, isolate the system, and conduct a thorough security scan.