alert ftp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Hakbit/Thanos Ransomware Exfil via FTP"; flow:established,to_server; content:"STOR "; depth:5; content:"/UserName="; distance:0; content:"_MachineName="; distance:0; fast_pattern; content:"_"; distance:0; classtype:trojan-activity; sid:2030156; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_05_12, deployment Perimeter, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_05_12, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)