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;
)