alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Kimsuky Related Activity Sending Windows Information (POST)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/info.php?"; startswith; content:"=C|3a 5c|Program"; fast_pattern; http.user_agent; content:"Mozilla/4.0|20|(compatible|3b 20|Win32|3b 20|WinHttp.WinHttpRequest.5)"; http.request_body; content:"v="; startswith; content:"|20|svchost.exe|20|"; content:"&r="; reference:md5,40de99fb06e52e3364f2cd70f100ff71; reference:url,twitter.com/h2jazi/status/1465402736996933640; classtype:trojan-activity; sid:2034560; rev:2; metadata:attack_target Client_Endpoint, created_at 2021_11_30, deployment Perimeter, malware_family Kimsuky, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_04_28;)