alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE PlugX Activity (POST)"; flow:established,to_server; http.method; content:"POST"; http.uri; pcre:"/^\/[a-zA-z]{14}\//U"; content:"/plplpMj.php"; endswith; fast_pattern; 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|"; content:!"Referer"; http.request_body; content:"1="; startswith; reference:md5,ab96e541284afe6ffc3fcf4d05bc971e; reference:url,twitter.com/vupt_bka/status/1497147010927194112; classtype:trojan-activity; sid:2035293; rev:2; metadata:attack_target Client_Endpoint, created_at 2022_02_25, deployment Perimeter, malware_family PlugX, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_20;)