alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Kimsuky Related Script Activity (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/list.php?query=1"; fast_pattern; endswith; http.user_agent; content:"Mozilla/4.0|20|(compatible|3b 20|Win32|3b 20|WinHttp.WinHttpRequest.5)"; bsize:57; http.header_names; content:!"Referer"; reference:url,mp.weixin.qq.com/s/og8mfnqoKZsHlOJdIDKYgQ; reference:md5,78bdd34f641fb2d1992c8651298f4aff; classtype:trojan-activity; sid:2033597; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_07_28, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_07_28;)