alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE JAR/Qealler Stealer HTTP Headers Observed"; flow:established,to_server; http.method; content:"POST"; http.header_names; content:"|0d 0a|q-qealler-id|0d 0a|q-qealler-stub-id|0d 0a|"; fast_pattern; content:!"Referer"; reference:url,www.zscaler.com/blogs/research/qealler-new-jar-based-information-stealer; classtype:trojan-activity; sid:2027311; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, created_at 2019_05_02, deployment Perimeter, malware_family Qealler, performance_impact Low, confidence High, signature_severity Major, tag Stealer, updated_at 2020_08_28;)