Rule History

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Cobalt Strike Domain (fepopeguc .com) in TLS SNI"; flow:established,to_server; tls.sni; content:"fepopeguc.com"; bsize:13; fast_pattern; reference:url,twitter.com/Unit42_Intel/status/1613710507638235136; classtype:trojan-activity; sid:2043301; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_01_13, deployment Perimeter, malware_family Cobalt_Strike, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_09_30, reviewed_at 2024_09_30;)