alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Divulge Stealer Domain (stealer .to) in TLS SNI"; flow:established,to_server; tls.sni; bsize:10; content:"stealer.to"; fast_pattern; reference:md5,5dcb1ba6798ce412ee7652761757fc3b; classtype:domain-c2; sid:2060379; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2025_02_26, deployment Perimeter, malware_family Divulge_Stealer, performance_impact Low, confidence High, signature_severity Major, updated_at 2025_02_26, mitre_tactic_id TA0037, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)