alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/FakeSysdef Rogue AV Checkin"; flow:established,to_server; http.uri; content:"/dfrg/dfrg"; reference:md5,f0f750e8f195dcfc8623679ff2df1267; reference:md5,e186e530ebf0aec07f0cd2afd706633c; reference:md5,294a729bb6a8fc266990b4c94eb86359; classtype:command-and-control; sid:2012725; rev:10; metadata:created_at 2011_04_26, malware_family Win32_FakeSysdef, signature_severity Major, updated_at 2020_04_20;)