alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE MSIL/Spy.Banker.DH Checkin"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".aspx?"; endswith; http.user_agent; content:"Mozilla/5.0 (Windows|3b 20|U|3b 20|Windows NT 6.1|3b 20|ru|3b 20|rv|3a|1.9.2.3) Gecko/20100401 Firefox/4.0 (.NET CLR 3.5.30729)"; fast_pattern; bsize:104; http.request_body; content:"id="; depth:3; nocase; http.content_type; content:"application/x-www-form-urlencoded"; startswith; reference:md5,39519ff5bddd6d0eee032232349fe0a6; classtype:command-and-control; sid:2022811; rev:4; metadata:created_at 2016_05_17, malware_family MSIL_Spy_Banker_DH, confidence High, signature_severity Major, updated_at 2020_07_15;)