Rule History

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Asylum Ambuscade Related CnC Activity (install)"; flow:established,to_server; urilen:39; http.method; content:"GET"; http.uri; content:"|2f|download|3f|path|3d|ahkbotslashmscoreedot"; startswith; fast_pattern; pcre:"/^(?:ahk|exe)$/R"; http.host; pcre:"/^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$/"; reference:url,welivesecurity.com/2023/06/08/asylum-ambuscade-crimeware-or-cyberespionage/; reference:url,proofpoint.com/us/blog/threat-insight/asylum-ambuscade-state-actor-uses-compromised-private-ukrainian-military-emails; classtype:trojan-activity; sid:2046247; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_06_13, deployment Perimeter, confidence High, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_06_13;)