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CheckList

The following plugin looks up if a value in a specified list exists and then allows the addition of a record to indicate if found. Introduced in version 1.8.4

Configuration Parameters

The plugin supports the following configuration parameters

Key

Description

Example Configuration

[INPUT]
    name           tail
    tag            test1
    path           test1.log
    read_from_head true
    parser         json

[FILTER]
    name       checklist
    match      test1
    file       ip_list.txt
    lookup_key $remote_addr
    record     ioc    abc
    record     badurl null
    log_level  debug

[OUTPUT]
    name       stdout
    match      test1

In the following configuration we will read a file test1.log that includes the following values

{"remote_addr": true, "ioc":"false", "url":"https://badurl.com/payload.htm","badurl":"no"}
{"remote_addr": "7.7.7.2", "ioc":"false", "url":"https://badurl.com/payload.htm","badurl":"no"}
{"remote_addr": "7.7.7.3", "ioc":"false", "url":"https://badurl.com/payload.htm","badurl":"no"}
{"remote_addr": "7.7.7.4", "ioc":"false", "url":"https://badurl.com/payload.htm","badurl":"no"}
{"remote_addr": "7.7.7.5", "ioc":"false", "url":"https://badurl.com/payload.htm","badurl":"no"}
{"remote_addr": "7.7.7.6", "ioc":"false", "url":"https://badurl.com/payload.htm","badurl":"no"}
{"remote_addr": "7.7.7.7", "ioc":"false", "url":"https://badurl.com/payload.htm","badurl":"no"}

Additionally, we will use the following lookup file which contains a list of malicious IPs (ip_list.txt)

1.2.3.4
6.6.4.232
7.7.7.7

In the configuration we are using $remote_addr as the lookup key and 7.7.7.7 is malicious. This means the record we would output for the last record would look like the following

{"remote_addr": "7.7.7.7", "ioc":"abc", "url":"https://badurl.com/payload.htm","badurl":"null"}