alert http $EXTERNAL_NET 1024: -> $HOME_NET any (msg:"ET MALWARE Win32/H0lyGh0st Ransomware CnC Response"; flow:established,to_client; http.response_line; content:"HTTP/1.1 200 OK"; http.response_body; content:"Key upload Success"; endswith; bsize:18; fast_pattern; http.content_len; content:"18"; bsize:2; http.content_type; content:"text/html"; startswith; reference:url,microsoft.com/security/blog/2022/07/14/north-korean-threat-actor-targets-small-and-midsize-businesses-with-h0lygh0st-ransomware/; classtype:trojan-activity; sid:2037768; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_07_14, deployment Perimeter, deprecation_reason Age, malware_family Win32_H0lyGh0st, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_12_02, reviewed_at 2024_12_02;)