alert dns $HOME_NET any -> any any (msg:"ET MALWARE Observed AgentTesla Domain Request"; dns.query; content:"agenttesla.com"; depth:14; nocase; endswith; fast_pattern; reference:md5,32f3fa6b80904946621551399be32207; classtype:trojan-activity; sid:2023354; rev:5; metadata:attack_target Client_Endpoint, created_at 2016_10_21, deployment Perimeter, malware_family Keylogger, malware_family AgentTesla, malware_family Backdoor, performance_impact Low, confidence High, signature_severity Major, updated_at 2020_09_17;)