alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/BlackMagic Ransomware Payload Request (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/dll/microsoftupdatedefender"; startswith; fast_pattern; http.host; pcre:"/^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$/"; reference:url,blog.cyble.com/2022/12/07/a-closer-look-at-blackmagic-ransomware; classtype:trojan-activity; sid:2042520; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_12_08, deployment Perimeter, malware_family Win32_BlackMagic, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_12_08;)