alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE MSIL.Kraken.v2 HTTP Pattern"; flow:established,to_server; http.user_agent; content:"Kraken web request agent/"; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; content:!"|0d 0a|accept"; reference:md5,e1aee9ef64d71e0c9bb8eee9742efdef; reference:url,securingtomorrow.mcafee.com/mcafee-labs/fallout-exploit-kit-releases-the-kraken-ransomware-on-its-victims/; classtype:trojan-activity; sid:2026588; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_11_09, deployment Perimeter, malware_family Ransomware, malware_family Kraken_Ransomware, confidence High, signature_severity Major, tag Ransomware, updated_at 2024_04_20;)