alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP Win32/TrojanDownloader Variant Activity (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".php?p="; content:"&t="; within:10; content:"&title="; within:20; http.user_agent; content:"Inno Setup"; startswith; fast_pattern; http.header_names; content:!"Referer"; reference:md5,3c4563bae9514a3d01298dc223e96d3d; classtype:pup-activity; sid:2047660; rev:3; metadata:attack_target Client_Endpoint, created_at 2023_08_16, deployment Perimeter, performance_impact Moderate, confidence Medium, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_18, reviewed_at 2024_04_01; target:src_ip;)