alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Trojan-PSW.Win32.Stealer.sb CnC"; flow:established,to_server; http.method; content:"GET"; http.request_line; content:"GET /AH/ HTTP/1.0"; fast_pattern; http.header; pcre:"/^Referer\x3a\x20[a-zA-Z0-9_\-.]+\x28[a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9]\x29\w+\x0d\x0a/"; content:"Referer"; http.connection; content:"Keep-Alive"; reference:md5,b6796c1e9e454517c14da454c23c0ef5; classtype:command-and-control; sid:2036962; rev:2; metadata:attack_target Client_Endpoint, created_at 2022_06_10, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_05_03, reviewed_at 2024_06_17;)