alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET DELETED Tibs Code Download"; flow:established,to_server; content:"/sred2.exe"; nocase; http_uri; content:!"User-Agent|3a|"; http_header; classtype:trojan-activity; sid:2002962; rev:7; metadata:created_at 2010_07_30, signature_severity Unknown, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)