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;
)