alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/WarHawk/Spyder Sending Windows System Information (POST) M2"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php"; endswith; http.user_agent; content:"Base/1.0"; endswith; http.header_names; content:!"Referer"; http.request_body; content:"hwid="; startswith; pcre:"/^[A-Za-z0-9+/=]{48}/PR"; content:"username="; content:"compname="; content:"osname="; content:"&arch=1&av=eyJ"; fast_pattern; content:"agent="; content:"profile="; content:"mail="; reference:url,twitter.com/jaydinbas/status/1653361390491430915; reference:md5,87d94635372b874f18acb3af7c340357; classtype:command-and-control; sid:2045296; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_05_02, deployment Perimeter, malware_family WarHawk, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_06_12, reviewed_at 2025_07_14; target:src_ip;)