alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil"; flow:established,to_server; http.method; content:"POST"; http.content_type; content:"multipart/form-data|3b 20|boundary=1BEF0A57BE110FD467A"; bsize:49; fast_pattern; http.request_body; content:".zip|22 0d 0a|"; content:"|0d 0a|PK"; distance:0; content:"screenshot.jpg"; distance:0; http.header_names; content:!"Referer"; reference:md5,6c8357280b50bb1808ec77b0292eb22b; classtype:command-and-control; sid:2029236; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_01_08, deployment Perimeter, malware_family Arkei, malware_family Oski, confidence High, signature_severity Major, updated_at 2020_01_08;)