alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Lazarus Related Domain (share .bloomcloud .org in TLS SNI)"; flow:established,to_server; tls.sni; content:"share.bloomcloud.org"; bsize:20; fast_pattern; reference:url,twitter.com/ShadowChasing1/status/1433807018867912705; reference:md5,a224350ce67eea6a8d818b85436c5309; reference:md5,02904e802b5dc2f85eec83e3c1948374; reference:md5,bac4acc2544626bac6377fb32c5f244c; classtype:command-and-control; sid:2033903; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_09_07, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_09_07, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)