alert smtp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Baraka Ransomware CnC activity email SMTP"; flow:established,to_server; content:"|0d 0a 0d 0a|info=/*****/ Drive|20|"; fast_pattern; content:"&key="; distance:0; content:"&userid="; distance:0; classtype:command-and-control; sid:2029552; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_02_28, deployment Perimeter, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_02_28, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)