alert tcp $EXTERNAL_NET any -> $HOME_NET 1024: (msg:"ET MALWARE Linux/DDoS.M KILLATTK command"; flow:established,to_client ; content:"KILLATTK "; depth:9; flowbits:isset,ET.lizkebab; reference:md5,5924bcc045bb7039f55c6ce29234e29a; reference:url,github.com/pop-pop-ret/lizkebab; classtype:trojan-activity; sid:2020165; rev:1; metadata:created_at 2015_01_13, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)