Query: write Sigma for Detects creation of a file named "ntds.dit" (Active Directory Database) by an uncommon parent process or directory
Matching passage: Sigma rule: Detects creation of a file named "ntds.dit" (Active Directory Database) by an uncommon parent process or directory. Logsource: windows / file_event. Rule: title: NTDS.DIT Creation By Uncommon Parent Process id: 4e7050dd-e548-483f-b7d6-527ab4fa784d related: - id: 11b1ed55-154d-4e82-8ad7-83739298f720 type: similar status: test description: Detects creation of a file named "ntds.dit" (Active Directory Database) by an uncommon parent process or directory references: - https://www.ired.team/offensive-security/credential-access-and-credential-dumping/ntds.dit-enumeration - https://www.n00py.io/2022/03/manipulating-user-passwords-without-mimikatz/ - https://pentestlab.blog/tag/ntds-dit/ - https://github.com/samratashok/nishang/blob/414ee1104526d7057f9adaeee196d91ae447283e/Gather/Copy-VSS.ps1 author: Florian Roth (Nextron Systems) date: 2022-03-11 modified: 2023-01-05 tags: - attack.credential-access - attack.t1003.003 logsource: product: windows category: file_event definition: 'Requirements: The "ParentImage" field is not available by default on EID 11 of Sysmon logs. To be able to use this rule to the full extent you need to enrich the log with additional ParentImage data' detection: selection_file: TargetFilename|endswith: \ntds.dit selection_process_parent: ParentImage|endswith: - \cscript.exe - \httpd.exe - \nginx.exe - \php-cgi.exe - \powershell.exe - \pwsh.exe - \w3wp.exe - \wscript.exe selection_process_parent_path: ParentImage|contains: - \apache - \tomcat - \AppData\ - \Temp\ - \Public\ - \PerfLogs\ condition: selection_file and 1 of selection_process_* falsepositives: - Unknown level: high
Near-miss passage: Sigma rule: Detects execution of the "mofcomp" utility as a child of a suspicious shell or script running utility or by having a sus. Logsource: windows / process_creation. Rule: title: Potential Suspicious Mofcomp Execution id: 1dd05363-104e-4b4a-b963-196a534b03a1 status: test description: 'Detects execution of the "mofcomp" utility as a child of a suspicious shell or script running utility or by having a suspicious path in the commandline. The "mofcomp" utility parses a file containing MOF statements and adds the classes and class instances defined in the file to the WMI repository. Attackers abuse this utility to install malicious MOF scripts ' references: - https://thedfirreport.com/2022/07/11/select-xmrig-from-sqlserver/ - https://github.com/The-DFIR-Report/Sigma-Rules/blob/75260568a7ffe61b2458ca05f6f25914efb44337/win_mofcomp_execution.yml - https://learn.microsoft.com/en-us/windows/win32/wmisdk/mofcomp author: Nasreddine Bencherchali (Nextron Systems) date: 2022-07-12 modified: 2023-04-11 tags: - attack.stealth - attack.t1218 logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: \mofcomp.exe - OriginalFileName: mofcomp.exe selection_case: - ParentImage|endswith: - \cmd.exe - \powershell.exe - \pwsh.exe - \wsl.exe - \wscript.exe - \cscript.exe - CommandLine|contains: - \AppData\Local\Temp - \Users\Public\ - \WINDOWS\Temp\ - '%temp%' - '%tmp%' - '%appdata%' filter_main_wmiprvse: ParentImage: C:\Windows\System32\wbem\WmiPrvSE.exe CommandLine|contains: C:\Windows\TEMP\ CommandLine|endswith: .mof filter_optional_null_parent: CommandLine|contains: C:\Windows\TEMP\ CommandLine|endswith: .mof condition: all of selection_* and not 1 of filter_main_* and not 1 of filter_optional_* falsepositives: - Unknown level: high