Versions (3)
Version DetailsCurrent
Rev: 3 • Jul 2, 2019, 12:00 PMET MALWARE APT32 Win32/Ratsnif CnC Checkin
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE APT32 Win32/Ratsnif CnC Checkin"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/cl_client_online.php"; depth:21; endswith; http.request_body; content:"Q29tcHV0ZXJOYW1lPV"; depth:18; fast_pattern; pcre:"/^(?:[A-Z0-9+/]{4})*(?:[A-Z0-9+/]{2}==|[A-Z0-9+/]{3}=|[A-Z0-9+/]{4})$/i"; reference:url,threatvector.cylance.com/en_us/home/threat-spotlight-ratsnif-new-network-vermin-from-oceanlotus.html; reference:md5,516ad28f8fa161f086be7ca122351edf; classtype:targeted-activity; sid:2027659; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, created_at 2019_07_02, deployment Perimeter, malware_family Ratsnif, performance_impact Low, confidence High, signature_severity Major, tag APT32, updated_at 2020_09_17;)
Jul 2, 2019, 12:00 PM
Sep 17, 2020, 12:00 PM
Sep 21, 2024, 3:00 AM
May 30, 2025, 12:04 AM
rules/emerging-malware.rules