One technique that performs a combination of filtering and manual log review is utilizing scripting languages such as Python. These scripts can parse through firewall logs or other inputs to highlight specific areas of focus for the analyst. One such script is DNS Blacklists which is available at https://bitbucket.org/ethanr/dns-blacklists/. This script takes a text file created by the log source or analyst and compares it to lists of IP addresses and domains that have been blacklisted.
The folder containing the script contains two other folders that are compared against each other. One folder contains the text files of IP and domain blacklists. These blacklists can be obtained from open sources or threat intelligence providers. ...
