alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Fake Software Download Redirect Leading to Malware M2"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/?arch="; content:"&s="; distance:0; content:"&q="; distance:0; http.request_body; content:"continuebtn="; startswith; fast_pattern; http.content_type; content:"application/x-www-form-urlencoded"; bsize:33; reference:md5,9284526d864c785b1d6bedd7830e8c19; reference:url,news.sophos.com/en-us/2021/09/01/fake-pirated-software-sites-serve-up-malware-droppers-as-a-service/; classtype:trojan-activity; sid:2033954; rev:2; metadata:created_at 2021_09_15, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_09_15;)