alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE ZeitLoader Payload Retrieval attempt"; flow:established,to_server; http.method; content:"GET"; http.user_agent; bsize:8; content:"work|2f|1|2e|0"; fast_pattern; reference:md5,eb5bd49b6eef60ff85892ef7c8015b01; classtype:trojan-activity; sid:2066361; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state plaintext, created_at 2025_12_18, deployment Perimeter, malware_family ZeitLoader, performance_impact Low, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_12_18, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1105, mitre_technique_name Ingress_Tool_Transfer;)