alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Loxes/Mongall Related CnC Beacon (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:!"."; content:!"?"; content:!"&"; pcre:"/^\/(?:[a-zA-Z0-9+/]{4})*(?:[a-zA-Z0-9+/]{2}==|[a-zA-Z0-9+/]{3}=|[a-zA-Z0-9+/]{4})(?:[a-zA-Z=]{4})?(?:\x20?)$/"; http.user_agent; content:"Mozilla/4.0 (compatible|3b|MSIE 6.0|3b|Windows NT 5.1)"; bsize:48; fast_pattern; http.header_names; content:!"Content"; content:!"Accept"; content:!"Referer"; reference:md5,069daf3015a2bb005142f400612da368; 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:2036979; rev:4; 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;)