Rule History

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Likely Malicious Windows SCT Download MSXMLHTTP AX"; flow:established,from_server; flowbits:isset,et.IE7.NoRef.NoCookie; file_data; content:"<registration"; nocase; distance:0; content:"progid"; distance:0; nocase; content:"<script"; nocase; distance:0; content:"<![CDATA["; nocase; content:"ActiveXObject"; nocase; distance:0; reference:url,www.carbonblack.com/2016/04/28/threat-advisory-squiblydoo-continues-trend-of-attackers-using-native-os-tools-to-live-off-the-land/; classtype:trojan-activity; sid:2024553; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_08_15, deployment Perimeter, malware_family PowerShell, confidence Medium, signature_severity Major, tag PowerShell_Downloader, updated_at 2019_07_26;)