alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/TrojanDownloader.Delf.BVP Win32/BioData CnC Beacon"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php?b="; content:!"&"; distance:0; http.request_body; content:"form-data|3b 20|name=|22|unit|22 3b 20|"; fast_pattern; http.header_names; content:!"Referer|0d 0a|"; reference:md5,68aab6163c29183ad8da1cf27a5a47c5; reference:url,securelist.com/blog/research/76717/inpage-zero-day-exploit-used-to-attack-financial-institutions-in-asia/; reference:url,researchcenter.paloaltonetworks.com/2017/11/unit42-recent-inpage-exploits-lead-multiple-malware-families; classtype:command-and-control; sid:2023545; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2016_11_23, deployment Perimeter, malware_family Win32_TrojanDownloader_Delf_BVP, signature_severity Major, tag c2, updated_at 2020_08_13, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)