""ET ATTACK_RESPONSE DNS Query for Observed CVE-2021-44228 Callback Domain (notburpcollaborator .net)""

SID: 2034825

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_and_Server, created_at 2021_12_21, cve CVE_2021_44228, deployment Perimeter, performance_impact Low, signature_severity Major, updated_at 2021_12_21

Reference:

  • cve

  • 2021-44228

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: "|13|notburpcollaborator|03|net|00|"

Within: 7

PCRE:

Special Options:

  • nocase

  • fast_pattern

source