alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP Bundleware Spyware CHM Download"; flow:to_server,established; content:"Referer|3a| ms-its|3a|mhtml|3a|file|3a|//C|3a|counter.mht!http|3a|//"; nocase; content:"/counter/HELP3.CHM|3a 3a|/help.htm"; nocase; classtype:pup-activity; sid:2001452; rev:9; metadata:created_at 2010_07_30, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_08_14;)