Versions (4)
Version DetailsCurrent
Rev: 1 • Sep 7, 2022, 12:00 PMET MALWARE Observed Chinese APT Related Domain (ramblercloud .com in TLS SNI)
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Chinese APT Related Domain (ramblercloud .com in TLS SNI)"; flow:established,to_server; tls.sni; content:"ramblercloud.com"; bsize:16; fast_pattern; reference:url,www.ptsecurity.com/ww-en/analytics/pt-esc-threat-intelligence/apt31-cloud-attacks/; reference:md5,1d65ef16d1f161ae3faa5ed7896734cd; classtype:domain-c2; sid:2038753; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_09_07, deployment Perimeter, malware_family TontoTeam, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_09_07, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)
Sep 7, 2022, 12:00 PM
Sep 7, 2022, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 1, 2025, 8:35 PM
rules/emerging-malware.rules