alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP Twaintec Download Attempt"; flow:to_server,established; content:"/downloads/cabs/TWTDLL/twaintec.cab"; nocase; http_uri; reference:url,www.pestpatrol.com/PestInfo/t/twain-tech.asp; classtype:pup-activity; sid:2001198; rev:9; metadata:created_at 2010_07_30, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_08_14;)