alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Atemu EDR Data Exfiltration Attempt"; flow:established,to_server; http.method; content:"POST"; http.uri; bsize:11; content:"/api/av_edr"; fast_pattern; http.header; content:"Authorization|3a 20|Bearer"; content:"X-CSRF-Token|3a 20|"; http.content_type; bsize:16; content:"application|2f|json"; http.request_body; content:"|7b 22|av_edr|22 3a 22|"; startswith; reference:md5,a3ce0c6600781e0196aad961e92123ed; classtype:trojan-activity; sid:2068891; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2026_04_21, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, signature_severity Major, tag Atemu_RAT, updated_at 2026_04_21, mitre_tactic_id TA0007, mitre_tactic_name Discovery, mitre_technique_id T1082, mitre_technique_name System_Information_Discovery; target:src_ip;)