""ET INFO URL Shortener (s .yam .com) in TLS SNI""
SID: 2045632
Revision: 1
Class Type: misc-activity
Metadata: attack_target Client_Endpoint, created_at 2023_05_10, deployment Perimeter, signature_severity Informational, updated_at 2023_05_10
Reference:
Protocol: tcp
Source Network: $EXTERNAL_NET
Source Port: 443
Destination Network: $HOME_NET
Destination Port: any
Flow: established,to_client
Contents:
-
Value: "|16|"
-
Value: "|0b|"
-
Value: "|06 03 55 04 03|"
-
Value: "s.yam.com"
Within: 8
PCRE: "/^(?:\x09|\x2e)s.yam.com/R"
Special Options: