alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Gamaredon File Stealer POST"; flow:to_server,established; http.method; content:"POST"; http.request_body; content:"form-data|3b 20|name=|22|filename|22|"; nocase; content:"form-data|3b 20|name=|22|compname|22|"; distance:0; nocase; content:"form-data|3b 20|name=|22|serial|22|"; distance:0; nocase; fast_pattern; content:"form-data|3b 20|name=|22|w|22|"; distance:0; nocase; content:"form-data|3b 20|name=|22|filesize|22|"; distance:0; nocase; content:"form-data|3b 20|name=|22|file|22|"; distance:0; nocase; http.content_type; content:"multipart/form-data|3b|"; startswith; http.header_names; content:!"User-Agent|0d 0a|"; reference:md5,1a81516780c2c5a966261cc47478133c; reference:url,researchcenter.paloaltonetworks.com/2017/02/unit-42-title-gamaredon-group-toolset-evolution/; classtype:trojan-activity; sid:2024027; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_02_28, deployment Perimeter, malware_family Gamaredon, confidence High, signature_severity Minor, updated_at 2020_08_04;)