Versions (2)
Version DetailsCurrent
Rev: 1 • May 27, 2026, 12:00 PMET MALWARE Observed MacSync Stealer Domain (byrnewealthmanagement .com in TLS SNI)
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed MacSync Stealer Domain (byrnewealthmanagement .com in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".byrnewealthmanagement.com"; endswith; fast_pattern; classtype:trojan-activity; sid:2069449; rev:1; metadata:attack_target Client_Endpoint, created_at 2026_05_27, deployment Perimeter, malware_family MacSync, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_05_27;)
May 27, 2026, 12:00 PM
May 27, 2026, 12:00 PM
May 27, 2026, 9:21 PM
May 29, 2026, 8:35 PM
rules/emerging-malware.rules