Rule History

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET ATTACK_RESPONSE MacSync Stealer Payload Inbound M1"; flow:established,to_client; http.response_body; content:"writeText|28 22|MacSync|20|Stealer|5c|n|5c|n|22 2c 20|writemind|20 26 20 22|info|22 29|"; reference:md5,b069eeffe39e07f3dd4f99c708fc2bf3; reference:url,x.com/suyog41/status/2041037052666667008; classtype:trojan-activity; sid:2068604; rev:1; metadata:affected_product Mac_OSX, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2026_04_06, deployment Perimeter, malware_family MacSync, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_04_06, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1105, mitre_technique_name Ingress_Tool_Transfer; target:dest_ip;)