alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32.WinSpy.pob Sending Data over SMTP"; flow:to_server,established; content:"filename="; content:"PC_Active_Time.txt"; within:19; content:"|0d 0a|"; within:3; reference:md5,d95845c510ec1f5ad38cb9ccab16c38b; classtype:trojan-activity; sid:2018019; rev:3; metadata:created_at 2014_01_28, signature_severity Major, updated_at 2019_07_26;)