alert http $EXTERNAL_NET $HTTP_PORTS -> $HOME_NET any (msg:"ET EXPLOIT US-ASCII Obfuscated VBScript download file"; flow:established,to_client; file.data; content:"US-ASCII"; nocase; pcre:"/\xae[\xef\xcf][\xf0\xd0][\xe5\xc5][\xee\xce]\xa0\xa2[\xe7\xc7][\xe5\xc5][\xf4\xd4]\xa2/"; reference:url,www.internetdefence.net/2007/02/06/Javascript-payload; reference:cve,2006-3227; reference:url,www.securityfocus.com/archive/1/437948/30/0/threaded; classtype:web-application-attack; sid:2003401; rev:7; metadata:created_at 2010_07_30, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_11, mitre_tactic_id TA0005, mitre_tactic_name Defense_Evasion, mitre_technique_id T1027, mitre_technique_name Obfuscated_Files_or_Information;)