alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE W32.Berbew Check-in"; flow:to_server,established; http.method; content:"POST"; http.user_agent; content:".NET CLR 00000000"; classtype:trojan-activity; sid:2017128; rev:8; metadata:created_at 2013_07_11, signature_severity Major, updated_at 2020_08_25;)