alert http $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET DELETED Trojan Downloader Win32/Small.CBA download"; flow:established,to_server; content:"popjs.asp?uid="; nocase; http_uri; content:"&tid="; nocase; http_uri; content:"&l="; nocase; http_uri; content:"&c="; http_uri; reference:url,www.microsoft.com/security/portal/Threat/Encyclopedia/Entry.aspx?Name=TrojanDownloader%3AWin32%2FSmall.CBA&ThreatID=-2147372177; classtype:trojan-activity; sid:2010569; rev:6; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2010_07_30, deployment Perimeter, signature_severity Major, tag Trojan_Downloader, updated_at 2019_07_26;)