alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Loxes/Mongall Related CnC Beacon M2 (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:!"."; content:!"?"; content:!"&"; pcre:"/^\/(?:[a-zA-Z0-9+/]{4})*(?:[a-zA-Z0-9+/]{2}==|[a-zA-Z0-9+/]{3}=|[a-zA-Z0-9+/]{4})(?:[a-zA-Z=]{4})?(?:\x20?)$/"; http.header; content:!"Content-"; http.user_agent; content:"Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.66 Safari/537.36"; fast_pattern; bsize:101; http.header_names; content:!"Accept"; content:!"Referer|0d 0a|"; reference:md5,d396d0709c0de53e24f1804d392ec968; reference:url,www.sentinelone.com/labs/aoqin-dragon-newly-discovered-chinese-linked-apt-has-been-quietly-spying-on-organizations-for-10-years/; classtype:command-and-control; sid:2036980; rev:5; metadata:attack_target Client_Endpoint, created_at 2016_02_12, deployment Perimeter, malware_family Mongall, malware_family Loxes, malware_family AoqinDragon, signature_severity Major, tag c2, updated_at 2022_06_14, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)