alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE W32/WannaCry.Ransomware Killswitch Domain HTTP Request 1"; flow:established,to_server; http.host; content:"iuqerfsodp9ifjaposdfjhgosurijfaewrwergwea"; fast_pattern; reference:cve,2017-0144; reference:url,www.endgame.com/blog/wcrywanacry-ransomware-technical-analysis; reference:url,www.bleepingcomputer.com/news/security/telefonica-tells-employees-to-shut-down-computers-amid-massive-ransomware-outbreak/; classtype:trojan-activity; sid:2024298; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_05_16, cve CVE_2017_0144, deployment Perimeter, malware_family wannacry, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_10_09, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)