NtdllPipe Like Activity Execution
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About the rule
Rule Type
Standard
Rule Description
Detects command that type the content of ntdll.dll to a different file or a pipe in order to evade AV / EDR detection. As seen being used in the POC NtdllPipe
Severity
Trouble
Rule Requirement
Criteria
Action1:
actionname = "Process started" AND COMMANDLINE contains "type %windir%\system32\ntdll.dll,type %systemroot%\system32\ntdll.dll,type c:\windows\system32\ntdll.dll,\ntdll.dll > \\.\pipe"
select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME,Action1.DOMAIN,Action1.ORIGINALFILENAME,Action1.PARENTPROCESSID,Action1.PROCESSID,Action1.PRODUCT_NAME,Action1.SECURITYID
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Florian Roth (Nextron Systems)
