alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Backdoor.Elise CnC Beacon 2 M2"; flow:to_server,established; http.method; content:"POST"; http.uri; pcre:"/^\/[a-z]{3,6}\/[a-z]{3,6}\.[a-z]{3}$/"; http.cookie; content:"=|3b 20|"; content:"=|3b 20|"; distance:0; content:"=|3b|"; endswith; http.header_names; content:"|0d 0a|Cache-Control|0d 0a|Connection|0d 0a|Pragma|0d 0a|Accept|0d 0a|Accept-Encoding|0d 0a|Accept-Language|0d 0a|Cookie|0d 0a|Host|0d 0a|User-Agent|0d 0a|Content-Length|0d 0a 0d 0a|"; reference:md5,f12fc711529b48bcef52c5ca0a52335a; reference:url,community.rsa.com/community/products/netwitness/blog/2018/01/30/apt32-continues-asean-targeting; classtype:command-and-control; sid:2025291; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_02_02, deployment Perimeter, malware_family elise, confidence High, signature_severity Major, tag c2, updated_at 2022_03_24, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)