alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE EICAR File Sent With X-Powered By Kaspersky Labs 2022-11-03"; flow:established,to_client; http.stat_code; content:"200"; http.response_header; header_lowercase; content:"x-powered-by|3a 20|Kaspersky|20|Labs"; startswith; http.response_header; content:"|0d 0a|content-disposition|3a 20|attachment|3b 20|filename|3d 22|eicar|2e|zip|22|"; distance:0; fast_pattern; http.header_names; to_lowercase; content:"|0d 0a|server|0d 0a|"; file.data; content:"PK"; within:2; classtype:trojan-activity; sid:2039680; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_11_03, deployment Perimeter, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_26;)