alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Lop_com or variant Checkin (9kgen_up)"; flow:established,to_server; http.method; content:"GET"; nocase; http.uri; content:"/9kgen_up.int"; reference:url,www.threatexpert.com/reports.aspx?find=9kgen_up.int; classtype:command-and-control; sid:2008943; rev:8; metadata:created_at 2010_07_30, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_21;)