File With Suspicious Extension Downloaded Via Bitsadmin
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About the rule
Rule Type
Standard
Rule Description
Detects usage of bitsadmin downloading a file with a suspicious extension
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "Process started" AND (PROCESSNAME endswith "\bitsadmin.exe" OR ORIGINALFILENAME = "bitsadmin.exe") AND COMMANDLINE contains " /transfer , /create , /addfile " AND (COMMANDLINE contains ".7z,.asax,.ashx,.asmx,.asp,.aspx,.bat,.cfm,.cgi,.chm,.cmd,.dll,.gif,.jpeg,.jpg,.jsp" OR COMMANDLINE contains ".jspx,.log,.png,.ps1,.psm1,.rar,.scf,.sct,.txt,.vbe,.vbs,.war,.wsf,.wsh,.xll,.zip") select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)
