alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET HUNTING Base64 Encoded ipconfig sent via HTTP POST M1"; flow:established,to_server; http.method; content:"POST"; http.request_body; content:"V2luZG93cyBJUCBDb25maWd1cmF0aW9u"; fast_pattern; pcre:"/(?:Q29ubmVjdGlvbi1zcGVjaWZpYyBETlMgU3VmZml4|Nvbm5lY3Rpb24tc3BlY2lmaWMgRE5TIFN1ZmZpe|Db25uZWN0aW9uLXNwZWNpZmljIEROUyBTdWZmaX)/R"; reference:md5,1df312629294f2de70a335a751a13a28; classtype:bad-unknown; sid:2034641; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_12_09, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_12_09;)