alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE ContEXE Stealer Data Exfiltration Attempt M2"; flow:established,to_server; xbits:isset,ET.ContEXE_Stealer,track ip_pair; http.method; content:"PUT"; http.uri; content:"/v1/backup/"; startswith; pcre:"/^[a-f0-9]{8}-(?:[a-f0-9]{4}-){3}[a-f0-9]{12}\x22/R"; content:"/part|3f|name|3d|PC_INFO"; fast_pattern; http.request_body; content:"PK|03 04|"; startswith; content:"PC_INFO.txt"; content:"machine_id|3d|"; content:"tag|3d|"; content:"agent|3d|"; reference:md5,9c1d8a309c1ef2d781c5503cfcd96f53; reference:md5,ccfcb42c83ff8315662d54c560a2c8e2; classtype:trojan-activity; sid:2072373; 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_10_06, deployment Perimeter, deployment SSLDecrypt, malware_family ContEXE_Stealer, performance_impact Low, confidence High, signature_severity Major, tag Stealer, updated_at 2026_10_06, mitre_tactic_id TA0009, mitre_tactic_name Collection, mitre_technique_id T1005, mitre_technique_name Data_from_local_system; target:src_ip;)