alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Possible DANDERSPRITZ Default HTTP Headers"; flow:established,to_server; http.method; content:"POST"; http.header; content:"Referrer|3a 20|"; content:"|0d 0a|TlEo|3a 20|"; fast_pattern; classtype:trojan-activity; sid:2024247; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_04_26, deployment Perimeter, performance_impact Moderate, confidence Medium, signature_severity Major, updated_at 2020_08_05;)