alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Fareit/Pony Downloader Checkin 2"; flow:established,to_server; flowbits:set,ET.Fareit.chk; http.method; content:"POST"; nocase; http.header; content:"|0d 0a|Content-Encoding|3a 20|binary|0d 0a|"; fast_pattern; content:"|0d 0a|Accept-Encoding|3a 20|identity,|20 2a 3b|q=0|0d 0a|"; http.user_agent; content:"|20|MSIE|20|"; http.protocol; content:"HTTP/1.0"; http.header_names; content:!"Referer"; reference:md5,d50c39753ba88daa00bc40848f174168; reference:md5,bf422f3aa215d896f55bbe2ebcd25d17; reference:md5,9544c681ae5c4fe3fdbd4d5c6c90e38e; reference:md5,99FAB94FD824737393F5184685E8EDF2; classtype:command-and-control; sid:2014411; rev:13; metadata:created_at 2012_03_22, signature_severity Major, updated_at 2020_08_25;)