alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP PUP Win32/Conduit.SearchProtect.O CnC Beacon"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/?uid="; content:"&affid="; distance:0; content:"&inst_date="; distance:0; fast_pattern; content:"&prod="; distance:0; http.header_names; content:!"Accept"; content:!"Referer|0d 0a|"; reference:md5,525917c79e22fa9bc54da36b94437a46; classtype:pup-activity; sid:2021173; rev:4; metadata:attack_target Client_Endpoint, created_at 2015_05_30, deployment Perimeter, signature_severity Minor, tag c2, updated_at 2020_08_31, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)