""ET INFO Observed External IP Lookup Domain (api .2ip .ua in TLS SNI)""
SID: 2033214
Revision: 2
Class Type: bad-unknown
Metadata: attack_target Client_Endpoint, created_at 2021_07_01, deployment Perimeter, performance_impact Low, signature_severity Informational, updated_at 2021_07_01
Reference:
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: 443
Flow: established,to_server
Contents:
-
Value: "|16|"
-
Value: "|01|"
-
Value: "|00 00 0a|api.2ip.ua"
Within: 8
PCRE:
Special Options:
- fast_pattern