alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET POLICY Possible HTA Application Download"; flow:established,to_server; flowbits:set,ET.HTA.Download; http.method; content:"GET"; http.uri; content:".hta"; nocase; fast_pattern; endswith; http.host; content:!".kaspersky.com"; endswith; reference:url,www.trustedsec.com/july-2015/malicious-htas/; classtype:bad-unknown; sid:2022520; rev:7; metadata:created_at 2016_02_15, confidence Medium, signature_severity Informational, updated_at 2025_05_06;)