alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Nemty Ransomware Style Geo IP Check M2"; flow:established,to_server; http.method; content:"GET"; http.header; content:"User-Agent|3a 20|Chrome|0d 0a|"; fast_pattern; http.host; content:"api.ipify.org"; endswith; http.header_names; content:!"Accept"; content:!"Referer"; reference:url,www.bleepingcomputer.com/news/security/new-nemty-ransomware-may-spread-via-compromised-rdp-conn; reference:md5,0e0b7b238a06a2a37a4de06a5ab5e615; classtype:trojan-activity; sid:2027914; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_08_26, deployment Perimeter, malware_family Nemty, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_08_28, reviewed_at 2024_02_20, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)