alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP Win32/Adware.Adposhel.A Checkin 5"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/q/"; depth:3; fast_pattern; http.request_body; content:"q="; depth:2; pcre:"/^[a-zA-Z0-9_-]+$/R"; http.connection; content:"close"; nocase; endswith; http.content_type; content:"application/x-www-form-urlencoded"; depth:33; endswith; http.header_names; content:!"Accept"; content:!"Referer"; reference:md5,f0e02ba660cfcb122b89bc780a6555ac; classtype:pup-activity; sid:2025094; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_12_01, deployment Internet, malware_family Adposhel, performance_impact Moderate, confidence High, signature_severity Minor, tag Adware, updated_at 2020_09_17;)