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Rev: 2 • Jan 12, 2026, 12:00 PMET MALWARE EtherRAT CnC Command Inbound (Ping)
alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE EtherRAT CnC Command Inbound (Ping)"; flow:established,to_client; flowbits:isset,ET.EtherRAT.ping; http.response_body; bsize:7; content:"//|20|ping"; fast_pattern; threshold:type limit,count 1,seconds 300,track by_dst; reference:md5,544be46f232f0cacecf73cc1be65ce62; reference:url,sysdig.com/blog/etherrat-dprk-uses-novel-ethereum-implant-in-react2shell-attacks#enter-etherrat-a-four-stage-attack-chain; classtype:command-and-control; sid:2066688; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2026_01_12, deployment Perimeter, deployment SSLDecrypt, malware_family EtherRAT, confidence High, signature_severity Critical, updated_at 2026_01_15, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol; target:dest_ip;)
Jan 12, 2026, 12:00 PM
Jan 15, 2026, 12:00 PM
Jan 12, 2026, 10:34 PM
Jan 15, 2026, 10:34 PM
rules/emerging-malware.rules