alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Satan/5ss5c Ransomware CnC Activity"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".php?code="; content:"&file="; distance:40; within:6; content:"&size="; distance:0; content:"&status="; distance:0; content:"&keyhash="; fast_pattern; reference:md5,853358339279b590fb1c40c3dc0cdb72; reference:url,twitter.com/jishuzhain/status/1216368394485800961; classtype:command-and-control; sid:2029269; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_01_13, deployment Perimeter, malware_family Satan_Cryptor, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_01_13, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)