alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP Malicious pusk.exe download"; flow:established,to_server; content:"GET"; http_method; content:"/pusk.exe"; nocase; http_uri; reference:md5,eae75c0e34d11e6daef216cfc3fbbb04; classtype:pup-activity; sid:2014810; rev:5; metadata:created_at 2012_05_25, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_08_14;)