Service Binary in Suspicious Folder

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About the rule

Rule Type

Standard

Rule Description

Detect the creation of a service with a service binary located in a suspicious directory

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "Registry value modified" AND (((OBJECTNAME startswith "HKLM\System\CurrentControlSet\Services" OR (OBJECTNAME = "HKLM\System\CurrentControlSet\Services" AND isExist(OBJECTVALUENAME))) AND OBJECTNAME endswith "\Start" AND PROCESSNAME contains "\Users\Public\,\Perflogs\,\ADMIN$\,\Temp" AND (INFORMATION = "DWORD (0x00000000),DWORD (0x00000001),DWORD (0x00000002)" OR (CHANGES = "0,1,2" AND NEWTYPE = "REG_DWORD,REG_DWORD,REG_DWORD"))) OR ((OBJECTNAME startswith "HKLM\System\CurrentControlSet\Services" OR (OBJECTNAME = "HKLM\System\CurrentControlSet\Services" AND isExist(OBJECTVALUENAME))) AND OBJECTNAME endswith "\ImagePath" AND INFORMATION contains "\Users\Public\,\Perflogs\,\ADMIN$\,\Temp")) AND (PROCESSNAME notcontains "\Common Files" OR PROCESSNAME notcontains "\Temp") select Action1.HOSTNAME,Action1.MESSAGE,Action1.OBJECTNAME,Action1.PROCESSNAME,Action1.PREVVAL,Action1.CHANGES

Detection

Execution Mode

realtime

Log Sources

Windows

Author

Florian Roth (Nextron Systems), frack113