alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Peed Checkin"; flow:established,to_server; http.method; content:"POST"; nocase; http.uri; content:".php"; http.content_type; bsize:48; content:"application/x-www-form-urlencoded|3b 20|charset=UTF-8"; http.header_names; content:!"|0d 0a|User-Agent|0d 0a|"; content:"|0d 0a|Host|0d 0a|"; startswith; content:"|0d 0a|Content-Type|0d 0a|Connection|0d 0a 0d 0a|"; endswith; http.request_body; content:"aa1020R0="; startswith; fast_pattern; content:"%3D%0D%0A"; offset:109; reference:md5,142ff7d3d931ecfa9a06229842ceefc4; reference:md5,df690cbf6e33e9ee53fdcfc456dc4c1f; classtype:command-and-control; sid:2014347; rev:7; metadata:created_at 2012_03_09, signature_severity Major, updated_at 2024_03_04;)