alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Screenshot Exfiltration via Discord Webhook (POST)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/api/webhooks/"; startswith; http.host; content:"discord.com"; endswith; http.request_body; content:"|7b|"; startswith; content:"|22|file|22 3a|"; distance:0; content:"|22|iVBORw0KGgoAAAANSUhEUg"; within:27; fast_pattern; reference:md5,38b4f8e9a53eede69f4339af1adb55b0; classtype:trojan-activity; sid:2060517; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2025_03_03, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Major, updated_at 2025_03_03, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1567, mitre_technique_name Exfiltration_Over_Web_Service; target:src_ip;)