alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Maldoc Sending Windows System Information (POST)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/t/"; startswith; content:".php?"; http.host; content:"r.significantbyte.com"; fast_pattern; bsize:21; reference:url,twitter.com/ShadowChasing1/status/1441367412562030600; reference:url,twitter.com/h2jazi/status/1440418522950107140; classtype:trojan-activity; sid:2034031; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_09_27, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_09_27;)