alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Suspected Lockscreen Ransomware Activity"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php"; endswith; http.referer; content:"/?page_id=93"; endswith; fast_pattern; http.request_body; content:"&page_title=Windows Security Warning&"; within:100; reference:url,www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/lockscreen-ransomware-phishing-leads-to-google-play-card-scam/; classtype:trojan-activity; sid:2030665; rev:1; metadata:attack_target Client_Endpoint, created_at 2020_08_07, deployment Perimeter, confidence Medium, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_07, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)