Rule History

alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE RATatouille rand-user-agent Supply Chain Compromise CnC Command Inbound (ss_upd:)"; flow:established,to_client; flowbits:isset,ET.RATatouille.Connect; content:"ss_upd|3a|"; reference:md5,c1b54de2dde3c72eab2b7b2e9ae76ea4; reference:url,aikido.dev/blog/catching-a-rat-remote-access-trojian-rand-user-agent-supply-chain-compromise; classtype:command-and-control; sid:2062290; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Linux, attack_target Client_Endpoint, tls_state plaintext, created_at 2025_05_12, deployment Perimeter, confidence High, signature_severity Critical, tag c2, tag AI_Generated_Description, updated_at 2025_05_12, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol; target:dest_ip;)