Versions (3)
Version DetailsCurrent
Rev: 1 • Aug 23, 2023, 12:00 PMET INFO Observed URI Shortening Service Domain (alturl .com in TLS SNI)
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed URI Shortening Service Domain (alturl .com in TLS SNI)"; flow:established,to_server; tls.sni; bsize:10; content:"alturl.com"; fast_pattern; classtype:misc-activity; sid:2047713; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_08_23, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag URL_Shortener_Service, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_08_23, reviewed_at 2023_08_23; target:src_ip;)
Aug 23, 2023, 12:00 PM
Aug 23, 2023, 12:00 PM
Aug 23, 2023, 9:00 PM
Aug 19, 2025, 9:35 PM
rules/emerging-info.rules