alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Asylum Ambuscade Related CnC Activity (SendLog)"; flow:established,to_server; http.method; content:"POST"; http.user_agent; content:"AutoHotkey"; bsize:10; fast_pattern; http.host; pcre:"/^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$/"; http.content_type; content:"application|2f|x|2d|www|2d|Form|2d|urlencoded"; http.header_names; content:"|0d 0a|User-Agent|0d 0a|Content-Type|0d 0a 0d 0a|"; bsize:30; http.request_body; content:"&log="; startswith; 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:2046246; 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, performance_impact Moderate, confidence High, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_06_13;)