alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Swizzor Checkin (kgen_up)"; flow:to_server,established; http.uri; content:"kgen_up.int"; content:"fxp="; pcre:"/^[a-z0-9]{60}/Ri"; classtype:command-and-control; sid:2008379; rev:6; metadata:created_at 2010_07_30, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_21;)