alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/X-Files Stealer Activity"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php"; endswith; http.header_names; content:"|0d 0a|Content-Type|0d 0a|Host|0d 0a|Content-Length|0d 0a|Expect|0d 0a|Connection|0d 0a 0d 0a|"; bsize:60; http.content_len; byte_test:0,>,90000,0,string,dec; http.request_body; content:"zipx="; startswith; fast_pattern; reference:md5,43379d3c3faf5d7e37df398de90ee58b; reference:url,twitter.com/h2jazi/status/1476292943027871755; reference:url,twitter.com/3xp0rtblog/status/1473323635469438978; classtype:trojan-activity; sid:2034848; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_12_30, deployment Perimeter, malware_family X_Files, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_12_30;)