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InformationalSplunk security contentRaven Tait +1

HTTP Rapid POST with Mixed Status Codes

This detection identifies rapid-fire POST request attacks where an attacker sends more than 20 POST requests within a 5-second window, potentially attempting to exploit race conditions or overwhelm request handling.…

Description

This detection identifies rapid-fire POST request attacks where an attacker sends more than 20 POST requests within a 5-second window, potentially attempting to exploit race conditions or overwhelm request handling. The pattern is particularly suspicious when responses vary in size or status codes, indicating successful exploitation attempts or probing for vulnerable endpoints.

Detection logic

Detection requirements

Platform
ContainersESXiIaaSLinuxmacOSNetwork DevicesPREWindows

The rule states no platform. This is derived from the 3 ATT&CK techniques it maps to.

Log source category
nginx_access

Known benign triggers

  • False positives may be present if the activity is part of diagnostics or testing. Filter as needed.

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