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Andrew Kroh andrewkroh

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andrewkroh / howto.txt
Last active May 5, 2023 10:07
Microsoft-Windows-Windows Defender Event Log Message Resources
View howto.txt
800, AntiVirus
801, AntiSpyware
802, Antimalware
803, Full
804, Delta
805, Full Scan
806, Quick Scan
807, Custom Scan
808, Remove
809, Quarantine
andrewkroh / beat.yml
Last active March 10, 2023 15:04
Beat script processor to filter out IPv6
View beat.yml
- script:
# This uses a Beat script processor to include only ipv4 addresses
# in the host.ip field. This would need to placed after the add_host_metadata
# processor.
# It would be a lot more efficient to have add_host_metadata allow controlling
# what addresses were included because this has to execute for every event.
# References:
andrewkroh /
Last active March 6, 2023 19:09
Adding event.ingested and lag calculations to Winlogbeat events

Adding event.ingested and lag calculations to Winlogbeat events

Create an Ingest Pipeline that will add four fields:

  • event.ingested - Time when the event was processed by Elasticsearch.
  • - Time difference in milliseconds between @timestamp and event.created. This measures how long it took for Winlogbeat read the event from the event log (for WEC this includes the delivery time from forwarder to collector).
  • event.lag.ingest - Time difference in milliseconds between event.created and event.ingested. This measures the time between Winlogbeat reading the event (time when it "created" the document) to when it was written to Elasticsearch.
andrewkroh /
Last active January 17, 2023 20:26
Routing Filebeat data to a Fleet integration data stream

DRAFT: Routing Filebeat data to a Fleet integration data stream

This is an unofficial tutorial that may be useful to users that are in the process of migrating to to Elastic Agent and Fleet. It explains the steps to route some Filebeat data into a data stream managed by a Fleet integration package.

Install the Fleet integration

Installing a Fleet integration sets up all of its data streams and dashboards. There are two methods to install. In these examples we install the Hashicorp Vault 1.3.1 integration.

Use Kibana (easiest)

andrewkroh / install-go.ps1
Last active November 24, 2022 13:13
Install Golang using Powershell
View install-go.ps1
# Installs golang on Windows.
# # Run script:
# .\install-go.ps1 -version 1.5.3
# # Download and run script:
# $env:GOVERSION = '1.5.3'
# iex ((new-object net.webclient).DownloadString('SCRIPT_URL_HERE'))
andrewkroh /
Last active September 1, 2022 21:42
Bash script to dump wireguard peers to JSON
#!/usr/bin/env bash
# Licensed to Elasticsearch B.V. under one or more contributor
# license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright
# ownership. Elasticsearch B.V. licenses this file to you under
# the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License.
# You may obtain a copy of the License at
andrewkroh / event1.json
Last active August 2, 2022 15:22
Winlogbeat - Sysmon Processing for ECS (Elastic Common Schema)
View event1.json
"@timestamp": "2019-01-29T19:10:47.538Z",
"beat": {
"hostname": "DESKTOP",
"name": "DESKTOP",
"version": "6.3.2"
"event": {
"kind": "event"
andrewkroh / netusergetinfo.go
Last active June 3, 2022 02:04
NetUserGetInfo tester tool for Windows
View netusergetinfo.go
package main
import (
andrewkroh / winlogbeat.yml
Created May 19, 2022 17:47
Winlogbeat script to log specific event IDs
View winlogbeat.yml
- name: Security
ignore_older: 1h
- script:
lang: javascript
source: |
var console = require("console");
var ids = {
andrewkroh /
Last active March 17, 2022 02:43
Elastic Beat Development 101

Elastic Beats Development 101

This is a short guide to get up and building Elastic Beats on a new Linux host.

Start a VM

This uses Google Compute Engine (GCE) to start an Ubuntu 20.04 virtual machine. You can use other versions of Linux or different virtualization platforms (or no virtualization), but those are not guaranteed to work with the commands here.

 gcloud auth login