alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE MSIL/Spy.Agent.DYS Exfil"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/c?uid="; startswith; fast_pattern; http.content_type; content:"multipart/form-data|3b 20|boundary|3d|"; http.request_body; content:"filename|3d 22|Screenshot.bmp|22|"; reference:md5,a101aebd7e97dba97311cde683a64a32; classtype:trojan-activity; sid:2037731; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_07_08, deployment Perimeter, malware_family MSIL_Spy_Agent_DYS, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_07_08;)