alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE MagikPOS Downloader Checkin"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php"; http.request_body; content:"data=domain%253a"; depth:16; fast_pattern; http.header_names; content:!"User-Agent|0d 0a|"; content:!"Accept"; content:!"Referer|0d 0a|"; reference:md5,121c1008d54e91db66feaf67b3d4084e; reference:url,blog.trendmicro.com/trendlabs-security-intelligence/majikpos-combines-pos-malware-and-rats/; classtype:command-and-control; sid:2024066; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2017_03_16, deployment Perimeter, malware_family MagikPOS, performance_impact Low, confidence High, signature_severity Major, updated_at 2020_08_04;)