alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET DELETED Observed Malicious SSL Cert (IcedID CnC)"; flow:established,from_server; content:"|09 00 b9 5a 68 02 24 e5 3e 2e|"; fast_pattern; content:"|55 04 03|"; content:"|06|Server"; distance:1; within:7; reference:url,securityintelligence.com/new-banking-trojan-icedid-discovered-by-ibm-x-force-research; reference:md5,de4ef2e24306b35d29891b45c1e3fbfd; classtype:domain-c2; sid:2024979; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2017_11_13, deployment Perimeter, malware_family IcedID, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_06_08, mitre_tactic_id TA0042, mitre_tactic_name Resource_Development, mitre_technique_id T1587, mitre_technique_name Develop_Capabilities;)