Rule History

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Arkanix Stealer Data Exfiltration Attempt"; flow:established,to_server; http.method; content:"POST"; http.uri; bsize:9; content:"/delivery"; http.header_names; content:"|0d 0a|desktop-name|0d 0a|"; fast_pattern; content:"|0d 0a|hwid|0d 0a|"; content:"|0d 0a|token|0d 0a|"; http.user_agent; bsize:11; content:"Mozilla/5.0"; reference:url,hunting.abuse.ch/hunt/691d7ec0e73ba/arkanix.pw/#sandnet; reference:md5,643696a052ea1963e24cfb0531169477; classtype:trojan-activity; sid:2065837; 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 2025_11_19, deployment Perimeter, malware_family Stealer, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_11_19, mitre_tactic_id TA0009, mitre_tactic_name Collection, mitre_technique_id T1005, mitre_technique_name Data_from_local_system; target:src_ip;)