Rule History

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE TA444 Domain in TLS SNI (bitscrunch .deck .linkpc .net)"; flow:established,to_server; tls.sni; bsize:26; content:"bitscrunch.deck.linkpc.net"; fast_pattern; classtype:trojan-activity; sid:2048979; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_10_30, deployment Perimeter, deprecation_reason Age, performance_impact Low, confidence High, signature_severity Major, tag TA444, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_06, reviewed_at 2024_03_06, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)