alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE FOX-SRT ShimRatReporter check-in"; threshold:type limit, track by_src, count 1, seconds 600; http.method; content:"POST"; http.uri; content:".php?filename="; fast_pattern; http.header; content:"Accept: */*"; http.accept_enc; content:"utf-8"; bsize:5; http.header_names; content:!"Referer"; content:!"Content-Type"; reference:url,blog.fox-it.com/2016/06/15/mofang-a-politically-motivated-information-stealing-adversary/; classtype:trojan-activity; sid:2022903; rev:4; metadata:created_at 2016_06_15, signature_severity Major, updated_at 2020_10_06;)