Detect Spike In Blocked Outbound Traffic From Your AWS

Description

This search will detect spike in blocked outbound network connections originating from within your AWS environment. It will also update the cache file that factors in the latest data.

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Use Case

Advanced Threat Detection

Category

Cloud Security, SaaS

Alert Volume

This search will detect spike in blocked outbound network connections originating from within your AWS environment. It will also update the cache file that factors in the latest data.

SPL Difficulty

None

Journey

Stage 3

Kill Chain Phases

Actions On Objectives
Command and Control

Data Sources

Network Communication

   Help

Detect Spike In Blocked Outbound Traffic From Your AWS Help

You must install the AWS App for Splunk (version 5.1.0 or later) and Splunk Add-on for AWS (version 4.4.0 or later), then configure your VPC Flow logs. You can modify dataPointThreshold and deviationThreshold to better fit your environment. The dataPointThreshold variable is the number of data points required to meet the definition of "spike." The deviationThreshold variable is the number of standard deviations away from the mean that the value must be to be considered a spike. This search works best when you run the "Baseline of Blocked Outbound Connection" support search once to create a history of previously seen blocked outbound connections.

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