alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP Win32/Adware.Neoreklami.MI Activity M1"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/google_ifi_ico.png?rnd="; fast_pattern; http.header_names; content:!"|0d 0a|User-Agent|0d 0a|"; reference:md5,8f691ff07480935c821032d85b14fa08; classtype:pup-activity; sid:2041921; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_12_06, deployment Perimeter, performance_impact Low, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_12_06;)