alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE TeleBots BCS-server User-Agent"; flow:established,to_server; http.method; content:"POST"; http.user_agent; content:"Mozilla/5.0|3b|"; fast_pattern; bsize:12; http.header_names; content:!"Content-Type|0d 0a|"; content:!"Referer|0d 0a|"; reference:url,www.welivesecurity.com/2016/12/13/rise-telebots-analyzing-disruptive-killdisk-attacks/; classtype:trojan-activity; sid:2023653; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2016_12_15, deployment Perimeter, malware_family TeleBots_payload, confidence High, signature_severity Major, updated_at 2020_08_04;)