Versions (2)
Version DetailsCurrent
Rev: 1 • Sep 29, 2025, 12:00 PMET MALWARE Nimbus Manticore Minibrowse Backdoor CnC Checkin
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Nimbus Manticore Minibrowse Backdoor CnC Checkin"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/api/hospital/data/"; fast_pattern; startswith; pcre:"/^\d{9,}$/R"; http.content_type; content:"application/json"; http.request_body; content:"|22|name|22 3a 20 22|"; content:"|22|company|22 3a 20 22|"; reference:url,research.checkpoint.com/2025/nimbus-manticore-deploys-new-malware-targeting-europe/; classtype:trojan-activity; sid:2064965; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2025_09_29, deployment Perimeter, malware_family Stealer, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, tag Nimbus_Manticore, updated_at 2025_09_29, mitre_tactic_id TA0009, mitre_tactic_name Collection, mitre_technique_id T1005, mitre_technique_name Data_from_local_system; target:src_ip;)
Sep 29, 2025, 12:00 PM
Sep 29, 2025, 12:00 PM
Sep 29, 2025, 9:34 PM
Sep 30, 2025, 9:36 PM
rules/emerging-malware.rules