alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Possible Sharik/Smoke Loader Microsoft Connectivity check M3"; flow:established,to_server; urilen:14; http.method; content:"GET"; http.uri; content:"/visualstudio/"; fast_pattern; http.host; content:"www.microsoft.com"; http.header_names; content:"|0d 0a|Cache-Control|0d 0a|Connection|0d 0a|Pragma|0d 0a|User-Agent|0d 0a|Host|0d 0a 0d 0a|"; reference:md5,e297f2ed2d162ad925ac140915a21405; classtype:trojan-activity; sid:2025440; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_03_27, deployment Perimeter, malware_family Smoke_Loader, confidence Medium, signature_severity Major, updated_at 2020_08_25;)