alert TCP $HOME_NET any -> $EXTERNAL_NET 25 (msg: "BLEEDING-EDGE VIRUS Bagle.BJ -alias .AY, .BC- worm -.cpl extension- - outbound"; flow: established; content:"amdoamh5dXRnamtoZnVrdGl5bGhqZ2ZkZmRmZGdoZ2hqeXVydXRpZ2toZmpndHVpdGtnaGp5"; nocase; reference:url,secunia.com/virus_information/14902/; classtype: trojan-activity; sid: 2001693; rev:7; )