alert http $HOME_NET any -> $EXTERNAL_NET 1024: (msg:"ET MALWARE Observed Sharp Panda APT Related Activity M2"; flow:established,to_server; http.method; content:"PROPFIND"; http.uri; content:"/goanywhere/"; startswith; fast_pattern; content:".xhtml"; endswith; http.user_agent; content:"Microsoft"; startswith; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; content:"|0d 0a|depth|0d 0a|translate|0d 0a|"; reference:url,twitter.com/StopMalvertisin/status/1663461621120000010; reference:md5,ea889308acb4249af92807cc7d70f084; classtype:trojan-activity; sid:2046148; rev:2; metadata:attack_target Client_Endpoint, created_at 2023_06_07, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_27; target:src_ip;)