alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Scattered Spider Domain (victimname-okta .com in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".victimname-okta.com"; endswith; fast_pattern; reference:url,www.cisa.gov/sites/default/files/2023-11/aa23-320a_scattered_spider.pdf; classtype:trojan-activity; sid:2049240; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_11_16, deployment Perimeter, signature_severity Major, updated_at 2023_11_16;)

Reference
URL	http://www.cisa.gov/sites/default/files/2023-11/aa23-320a_scattered_spider.pdf

Metadata
attack_target	Client_Endpoint
created_at	2023_11_16
deployment	Perimeter
signature_severity	Major
updated_at	2023_11_16