Rule History

alert tcp $HOME_NET any -> $EXTERNAL_NET [!9997,1024:] (msg:"ET MALWARE Dropper-497 (Yumato) Initial Checkin"; flow:established,to_server; dsize:5; content:"|30 30 30 0d 0a|"; classtype:command-and-control; sid:2007917; rev:4; metadata:created_at 2010_07_30, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)