alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Storm-0978 RomCom RAT CnC Checkin"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/api/v1.5/subscriptiontoken=eyJ"; fast_pattern; startswith; content:".eyJ"; distance:0; reference:url,blogs.blackberry.com/en/2023/07/romcom-targets-ukraine-nato-membership-talks-at-nato-summit; classtype:trojan-activity; sid:2046812; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_07_12, deployment Perimeter, malware_family ROMCOM_RAT, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_07_12; target:src_ip;)