SigmaHQ/rules-unsupported/win_dumping_ntdsdit_via_netsync.yml

title: Dumping ntds.dit remotely via NetSync
id: 757b2a11-73e7-411a-bd46-141d906e0167
description: ntds.dit retrieving (only computer accounts) using synchronisation with legit domain controller using Netlogon Remote Protocol
author: Teymur Kheirkhabarov, oscd.community
date: 2019/11/01
references:
    - https://www.slideshare.net/heirhabarov/hunting-for-credentials-dumping-in-windows-environment
tags:
    - attack.credential_access
    - attack.t1003
logsource:
    product: windows
    service: security
detection:
    selection1:
        EventID: 4624
        ComputerName: '%DomainControllersNamesList%'
    selection2:
        IpAddress: '%DomainControllersIpsList%'
    selection3:
        EventID: 5145
        ComputerName: '%DomainControllersNamesList%'
        ShareName|contains: '\IPC$'
        SubjectLogonId: '%SuspiciousTargetLogonIdList%'
        RelativeTargetName: 'netlogon'
    condition: write TargetLogonId from selection1 (if not selection2) to list %SuspiciousTargetLogonIdList%; then if selection3 -> alert
falsepositives:
    - Legitimate administrator adding new domain controller to already existing domain
level: medium
status: experimental
oscd task #2 completed - new rules: + rules/windows/builtin/win_susp_lsass_dump_generic.yml + rules/windows/builtin/win_transferring_files_with_credential_data_via_ne twork_shares.yml + rules/windows/builtin/win_remote_registry_management_using_reg_utility.y ml + rules/windows/sysmon/sysmon_unsigned_image_loaded_into_lsass.yml + rules/windows/sysmon/sysmon_lsass_memory_dump_file_creation.yml + rules/windows/sysmon/sysmon_raw_disk_access_using_illegitimate_tools.yml + rules/windows/sysmon/sysmon_cred_dump_tools_dropped_files.yml + rules/windows/sysmon/sysmon_cred_dump_tools_named_pipes.yml + rules/windows/process_creation/process_creation_shadow_copies_creation.y ml + rules/windows/process_creation/process_creation_shadow_copies_deletion.y ml + rules/windows/process_creation/process_creation_copying_sensitive_files_ with_credential_data.yml + rules/windows/process_creation/process_creation_shadow_copies_access_sym link.yml + rules/windows/process_creation/process_creation_grabbing_sensitive_hives _via_reg.yml + rules/windows/process_creation/process_creation_mimikatz_command_line.ym l + rules/windows/unsupported_logic/builtin/dumping_ntds.dit_via_dcsync.yml + rules/windows/unsupported_logic/builtin/dumping_ntds.dit_via_netsync.yml .yml - updated rules: + rules/windows/builtin/win_susp_raccess_sensitive_fext.yml + rules/windows/builtin/win_mal_creddumper.yml + rules/windows/builtin/win_mal_service_installs.yml + rules/windows/process_creation/win_susp_process_creations.yml + rules/windows/sysmon/sysmon_powershell_exploit_scripts.yml + rules/windows/sysmon/sysmon_mimikatz_detection_lsass.yml - deprecated rules: + rules/windows/process_creation/win_susp_vssadmin_ntds_activity.yml 2019-11-04 01:26:34 +00:00			`title: Dumping ntds.dit remotely via NetSync`
UUIDs + moved unsupported logic * Added UUIDs to all contributed rules * Moved unsupported logic directory out of rules/ because this breaks CI testing. 2019-12-19 22:56:36 +00:00			`id: 757b2a11-73e7-411a-bd46-141d906e0167`
oscd task #2 completed - new rules: + rules/windows/builtin/win_susp_lsass_dump_generic.yml + rules/windows/builtin/win_transferring_files_with_credential_data_via_ne twork_shares.yml + rules/windows/builtin/win_remote_registry_management_using_reg_utility.y ml + rules/windows/sysmon/sysmon_unsigned_image_loaded_into_lsass.yml + rules/windows/sysmon/sysmon_lsass_memory_dump_file_creation.yml + rules/windows/sysmon/sysmon_raw_disk_access_using_illegitimate_tools.yml + rules/windows/sysmon/sysmon_cred_dump_tools_dropped_files.yml + rules/windows/sysmon/sysmon_cred_dump_tools_named_pipes.yml + rules/windows/process_creation/process_creation_shadow_copies_creation.y ml + rules/windows/process_creation/process_creation_shadow_copies_deletion.y ml + rules/windows/process_creation/process_creation_copying_sensitive_files_ with_credential_data.yml + rules/windows/process_creation/process_creation_shadow_copies_access_sym link.yml + rules/windows/process_creation/process_creation_grabbing_sensitive_hives _via_reg.yml + rules/windows/process_creation/process_creation_mimikatz_command_line.ym l + rules/windows/unsupported_logic/builtin/dumping_ntds.dit_via_dcsync.yml + rules/windows/unsupported_logic/builtin/dumping_ntds.dit_via_netsync.yml .yml - updated rules: + rules/windows/builtin/win_susp_raccess_sensitive_fext.yml + rules/windows/builtin/win_mal_creddumper.yml + rules/windows/builtin/win_mal_service_installs.yml + rules/windows/process_creation/win_susp_process_creations.yml + rules/windows/sysmon/sysmon_powershell_exploit_scripts.yml + rules/windows/sysmon/sysmon_mimikatz_detection_lsass.yml - deprecated rules: + rules/windows/process_creation/win_susp_vssadmin_ntds_activity.yml 2019-11-04 01:26:34 +00:00			`description: ntds.dit retrieving (only computer accounts) using synchronisation with legit domain controller using Netlogon Remote Protocol`
			`author: Teymur Kheirkhabarov, oscd.community`
			`date: 2019/11/01`
			`references:`
			`- https://www.slideshare.net/heirhabarov/hunting-for-credentials-dumping-in-windows-environment`
			`tags:`
			`- attack.credential_access`
			`- attack.t1003`
			`logsource:`
			`product: windows`
			`service: security`
			`detection:`
			`selection1:`
			`EventID: 4624`
			`ComputerName: '%DomainControllersNamesList%'`
			`selection2:`
			`IpAddress: '%DomainControllersIpsList%'`
			`selection3:`
			`EventID: 5145`
			`ComputerName: '%DomainControllersNamesList%'`
Update win_dumping_ntdsdit_via_netsync.yml 2019-11-13 22:00:28 +00:00			`ShareName\|contains: '\IPC$'`
oscd task #2 completed - new rules: + rules/windows/builtin/win_susp_lsass_dump_generic.yml + rules/windows/builtin/win_transferring_files_with_credential_data_via_ne twork_shares.yml + rules/windows/builtin/win_remote_registry_management_using_reg_utility.y ml + rules/windows/sysmon/sysmon_unsigned_image_loaded_into_lsass.yml + rules/windows/sysmon/sysmon_lsass_memory_dump_file_creation.yml + rules/windows/sysmon/sysmon_raw_disk_access_using_illegitimate_tools.yml + rules/windows/sysmon/sysmon_cred_dump_tools_dropped_files.yml + rules/windows/sysmon/sysmon_cred_dump_tools_named_pipes.yml + rules/windows/process_creation/process_creation_shadow_copies_creation.y ml + rules/windows/process_creation/process_creation_shadow_copies_deletion.y ml + rules/windows/process_creation/process_creation_copying_sensitive_files_ with_credential_data.yml + rules/windows/process_creation/process_creation_shadow_copies_access_sym link.yml + rules/windows/process_creation/process_creation_grabbing_sensitive_hives _via_reg.yml + rules/windows/process_creation/process_creation_mimikatz_command_line.ym l + rules/windows/unsupported_logic/builtin/dumping_ntds.dit_via_dcsync.yml + rules/windows/unsupported_logic/builtin/dumping_ntds.dit_via_netsync.yml .yml - updated rules: + rules/windows/builtin/win_susp_raccess_sensitive_fext.yml + rules/windows/builtin/win_mal_creddumper.yml + rules/windows/builtin/win_mal_service_installs.yml + rules/windows/process_creation/win_susp_process_creations.yml + rules/windows/sysmon/sysmon_powershell_exploit_scripts.yml + rules/windows/sysmon/sysmon_mimikatz_detection_lsass.yml - deprecated rules: + rules/windows/process_creation/win_susp_vssadmin_ntds_activity.yml 2019-11-04 01:26:34 +00:00			`SubjectLogonId: '%SuspiciousTargetLogonIdList%'`
			`RelativeTargetName: 'netlogon'`
			`condition: write TargetLogonId from selection1 (if not selection2) to list %SuspiciousTargetLogonIdList%; then if selection3 -> alert`
			`falsepositives:`
			`- Legitimate administrator adding new domain controller to already existing domain`
			`level: medium`
			`status: experimental`