""ET POLICY Observed DNS Query to Commonly Abused Cloudflare Domain (trycloudflare .com)""
SID: 2034552
Revision: 2
Class Type: bad-unknown
Metadata: attack_target Client_Endpoint, created_at 2021_11_29, deployment Perimeter, signature_severity Major, updated_at 2021_11_29
Reference:
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: "|0d|trycloudflare|03|com|00|"
Within: 7
PCRE:
Special Options:
-
nocase
-
fast_pattern