Suspicious PowerShell Download - Powershell Script
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About the rule
Rule Type
Standard
Rule Description
Detects suspicious PowerShell download command
Severity
Trouble
Rule Requirement
Criteria
Action1:
actionname = "PowerShell Script Block Logged" AND SCRIPTEXECUTED contains "System.Net.WebClient" AND SCRIPTEXECUTED contains ".DownloadFile(,.DownloadFileAsync(,.DownloadString(,.DownloadStringAsync("
select Action1.HOSTNAME,Action1.MESSAGE,Action1.SCRIPTEXECUTED,Action1.DOMAIN,Action1.PATH,Action1.USERNAME
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Florian Roth (Nextron Systems)
