""ET INFO Commonly Abused Link Aggregating Service Domain in DNS Lookup (linkbio .co)""

SID: 2054891

Revision: 1

Class Type: misc-activity

Metadata: affected_product Any, attack_target Client_Endpoint, created_at 2024_08_05, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag link_aggregators, updated_at 2024_08_05

Reference:

• Link

Protocol: udp

Source Network: $HOME_NET

Source Port: any

Destination Network: any

Destination Port: 53

Flow:

Contents:

• Value: "|01|" Depth: 1 Offset: 2

• Value: "|00 01 00 00 00 00 00|"

• Value: "|07|linkbio|02|co|00|"

Within: 12

PCRE:

Special Options:

• fast_pattern

• nocase

source