network.dns

[ 1 Scope ] [ 2 Send data to Devo ] [ 3 Source tables ] [ 4 Table structure ] [ 5 Secure it ] [ 6 Field transformations ]

Scope

This union table collects information from a set of tables containing DNS server events from a variety of DNS manufacturers.

Send data to Devo

Among 13 compatible data sources, the most popular and security-critical are:

Source tables

The information displayed is extracted from the following tables:

box.devo_ea.files.dns_windows
cloud.azure.firewall.dns_proxy
ddi.infoblox.dns.queries_responses
dns.bind.query
dns.bluecat.named
dns.bluecat.stats
dns.infoblox.bloxonethreatdefense.threats

dns.infoblox.response
dns.windows
edr.crowdstrike.cannon.dnsrequest
firewall.paloalto.traffic
ids.bro.dns
ids.corelight.dns

Table structure

This is the set of columns displayed by this union table, which is the result of the collection of columns present in all source tables:

Extra columns

Fields marked as Extra in the table below are not shown by default in data tables and need to be explicitly requested in the query. You can find them marked as Extra when you perform a query so they can be easily identified. Learn more about this in Selecting unrevealed columns.

serverdate	`timestamp`	-

serverdate	`timestamp`	-
Field	Data type	Extra fields
severity	`str`	-
srcIp	`ip4`	-
dstIp	`ip4`	-
name	`str`	-
type	`str`	-
flags	`str`	-
dnsServer	`ip4`	-
srcPort	`int8`	-
destPort	`str`	-
PID	`str`	-
TTL	`str`	-

Field	Data type	Extra fields

Field	Data type	Extra fields
requestCount	`str`	-
qclass	`str`	-
category	`str`	-
answers	`str`	-
source	`str`	-
protocol	`str`	-
qr	`str`	-
response	`str`	-
rawMessage	`str`	✓
hostchain	`str`	✓
tag	`str`	✓
raw	`str`	✓

Secure it

The following Exchange Alert Packs help monitor events from this table by specifically installing the included alerts:

Active Scanning (MITRE Att&ck Technique: T1595)
Application Layer Protocol (MITRE Att&ck Technique: T1071)
Obfuscated Files or Information (MITRE Att&ck Technique: T1027)
DNS Log Threat Detection Suite

Activeboards

Threat Hunting by DNS

Field transformations

Even though all source tables have several features in common, they have some particularities that make it necessary to undergo a set of transformations to harmonize them for the union table. The most common transformations comprise changes in the data type or the application of rules when several columns in the source table feed a single column in the union table. You can find below the detailed list of transformations in each source table.