SigmaHQ/rules/windows/sysmon/sysmon_susp_vssadmin_ntds_activity.yml

title: Activity Related to NTDS.dit Domain Hash Retrieval
status: experimental
description: Detects suspicious commands that could be related to activity that uses volume shadow copy to steal and retrieve hashes from the NTDS.dit file remotely 
author: Florian Roth, Michael Haag
references:
    - https://www.swordshield.com/2015/07/getting-hashes-from-ntds-dit-file/
    - https://room362.com/post/2013/2013-06-10-volume-shadow-copy-ntdsdit-domain-hashes-remotely-part-1/
    - https://www.trustwave.com/Resources/SpiderLabs-Blog/Tutorial-for-NTDS-goodness-(VSSADMIN,-WMIS,-NTDS-dit,-SYSTEM)/
    - https://securingtomorrow.mcafee.com/mcafee-labs/new-teslacrypt-ransomware-arrives-via-spam/
logsource:
    product: windows
    service: sysmon
detection:
    selection:
        EventID: 1
        CommandLine:
            # Ransomware
            - 'vssadmin.exe Delete Shadows'
            # Hacking 
            - 'vssadmin create shadow /for=C:'
            - 'copy \\?\GLOBALROOT\Device\*\windows\ntds\ntds.dit'
            - 'copy \\?\GLOBALROOT\Device\*\config\SAM'
            - 'vssadmin delete shadows /for=C:'
            - 'reg SAVE HKLM\SYSTEM '
    condition: selection
fields:
    - CommandLine
    - ParentCommandLine
falsepositives:
    - Administrative activity
level: high
Rule: Vssadmin / NTDS.dit activity 2017-03-16 23:23:55 +00:00			`title: Activity Related to NTDS.dit Domain Hash Retrieval`
			`status: experimental`
			`description: Detects suspicious commands that could be related to activity that uses volume shadow copy to steal and retrieve hashes from the NTDS.dit file remotely`
Combined vssadmin rule 2017-03-26 00:27:26 +00:00			`author: Florian Roth, Michael Haag`
Change All "str" references to be "list"to mach schema update 2018-01-27 23:24:16 +00:00			`references:`
Added references to rule 2017-03-16 23:25:54 +00:00			`- https://www.swordshield.com/2015/07/getting-hashes-from-ntds-dit-file/`
			`- https://room362.com/post/2013/2013-06-10-volume-shadow-copy-ntdsdit-domain-hashes-remotely-part-1/`
			`- https://www.trustwave.com/Resources/SpiderLabs-Blog/Tutorial-for-NTDS-goodness-(VSSADMIN,-WMIS,-NTDS-dit,-SYSTEM)/`
Combined vssadmin rule 2017-03-26 00:27:26 +00:00			`- https://securingtomorrow.mcafee.com/mcafee-labs/new-teslacrypt-ransomware-arrives-via-spam/`
Rule: Vssadmin / NTDS.dit activity 2017-03-16 23:23:55 +00:00			`logsource:`
			`product: windows`
			`service: sysmon`
			`detection:`
			`selection:`
			`EventID: 1`
			`CommandLine:`
			`# Ransomware`
			`- 'vssadmin.exe Delete Shadows'`
			`# Hacking`
			`- 'vssadmin create shadow /for=C:'`
			`- 'copy \\?\GLOBALROOT\Device\*\windows\ntds\ntds.dit'`
Added references to rule 2017-03-16 23:25:54 +00:00			`- 'copy \\?\GLOBALROOT\Device\*\config\SAM'`
Rule: Vssadmin / NTDS.dit activity 2017-03-16 23:23:55 +00:00			`- 'vssadmin delete shadows /for=C:'`
			`- 'reg SAVE HKLM\SYSTEM '`
			`condition: selection`
Added field names to first rules 2017-09-12 21:54:04 +00:00			`fields:`
			`- CommandLine`
			`- ParentCommandLine`
Rule: Vssadmin / NTDS.dit activity 2017-03-16 23:23:55 +00:00			`falsepositives:`
			`- Administrative activity`
			`level: high`