alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Possible Bedep Connectivity Check (2)"; flow:established,to_server; urilen:13; http.method; content:"POST"; http.uri; content:"/timezone/0/0"; fast_pattern; http.content_len; byte_test:0,=,0,0,string,dec; http.host; content:"www.earthtools.org"; bsize:18; http.header_names; content:!"Referer|0d 0a|"; reference:url,malware-traffic-analysis.net/2014/09/09/index.html; classtype:trojan-activity; sid:2020491; rev:10; metadata:created_at 2015_02_20, confidence Medium, signature_severity Major, updated_at 2020_12_22;)