alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Kuluoz Activity"; flow:established,to_server; http.method; content:"POST"; http.uri; pcre:"/\/[A-F0-9]+$/"; http.header_names; content:!"Referer|0d 0a|"; http.request_body; content:"name=|22|key|22|"; nocase; content:"filename=|22|key.bin|22|"; nocase; content:"name=|22|data|22|"; nocase; content:"filename=|22|data.bin|22|"; nocase; reference:md5,c71416a9ec5414fe487167b5bfd921ec; classtype:trojan-activity; sid:2017620; rev:5; metadata:created_at 2013_10_21, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_27;)