Versions (3)
Version DetailsCurrent
Rev: 1 • May 14, 2024, 12:00 PMET INFO Observed Alibaba Cloud CDN Domain (aliyuncs .com in TLS SNI)
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed Alibaba Cloud CDN Domain (aliyuncs .com in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".aliyuncs.com"; endswith; fast_pattern; classtype:misc-activity; sid:2052581; rev:1; metadata:attack_target Client_Endpoint, created_at 2024_05_14, deployment Perimeter, confidence High, signature_severity Informational, tag TA_Abused_Service, updated_at 2024_05_14;)
May 14, 2024, 12:00 PM
May 14, 2024, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 21, 2024, 3:00 AM
rules/emerging-info.rules