alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Unicorn Stealer Activity (POST)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php"; endswith; http.request_body; content:"Content-Disposition|3a 20|form-data|3b 20|name=|22|file|22 3b 20|filename="; content:"form-data|3b 20|name=|22|filename|22 0d 0a|"; content:"form-data|3b 20|name=|22|submit|22 0d 0a|"; content:"form-data|3b 20|name=|22|id|22 0d 0a|"; content:"form-data|3b 20|name=|22|src|22 0d 0a|"; fast_pattern; content:"form-data|3b 20|name=|22|type|22 0d 0a|"; content:"form-data|3b 20|name=|22|on|22 0d 0a|"; reference:url,twitter.com/James_inthe_box/status/1307025445536239616; reference:md5,852646191db6768157a7fddcc13afed2; classtype:trojan-activity; sid:2030894; rev:1; metadata:attack_target Client_Endpoint, created_at 2020_09_21, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_21;)