alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP Win32/Adware.Vonteera.M Variant CnC Activity"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/getdata.php?wti="; fast_pattern; content:"&s="; distance:0; content:"&sta="; distance:0; http.user_agent; content:"NSISDL/1.2 (Mozilla)"; bsize:20; reference:md5,06cba7e1a75deca367afca8f27eb4db2; classtype:pup-activity; sid:2032761; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_04_14, deployment Perimeter, performance_impact Low, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_04_14;)