alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Ursnif Variant Retrieving Payload (x64)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"X64.jpg"; fast_pattern; endswith; http.header_names; content:!"User-Agent|0d 0a|"; content:!"Accept"; content:!"Referer|0d 0a|"; reference:md5,4dbff312f5ee5bfbd757030109faec2d; classtype:trojan-activity; sid:2023872; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_02_06, deployment Perimeter, malware_family ursnif, confidence High, signature_severity Major, updated_at 2020_10_08;)