Rule History

alert dns any any -> $HOME_NET any (msg:"ET MALWARE Downloader Retrieving Malicious Powershell in DNS Response"; content:"|00 10 00 01|"; offset:2; content:"-match '@(.*)@'){$str +="; content:"[System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String($matches[1]))}"; fast_pattern; reference:md5,968c50386bdc33286367ce8ee50d029b; reference:url,twitter.com/SBousseaden/status/1270992052055089158; classtype:trojan-activity; sid:2030315; rev:1; metadata:attack_target Client_Endpoint, created_at 2020_06_11, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_06_11;)