alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32.Androm.gnlb Checkin"; flow:established,to_server; http.uri; content:"/Count.asp?ver="; fast_pattern; nocase; content:"&mac="; http.header; content:"Content-Length|3a 20|0"; http.header_names; content:!"Referer|0d 0a|"; reference:md5,c7e6ebf91c03a2bcaa8053f149870fad; classtype:command-and-control; sid:2021608; rev:4; metadata:created_at 2015_08_11, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_10_01;)