Query: Sigma rule for Detects scenarios where one can control another users or computers account without having to use their credentials.
Matching passage: Sigma rule: Detects scenarios where one can control another users or computers account without having to use their credentials.. Logsource: windows / security. Rule: title: Active Directory User Backdoors id: 300bac00-e041-4ee2-9c36-e262656a6ecc status: test description: Detects scenarios where one can control another users or computers account without having to use their credentials. references: - https://msdn.microsoft.com/en-us/library/cc220234.aspx - https://adsecurity.org/?p=3466 - https://blog.harmj0y.net/redteaming/another-word-on-delegation/ author: '@neu5ron' date: 2017-04-13 modified: 2024-02-26 tags: - attack.privilege-escalation - attack.t1098 - attack.persistence logsource: product: windows service: security definition: 'Requirements: Audit Policy : Account Management > Audit User Account Management, Group Policy : Computer Configuration\Windows Settings\Security Settings\Advanced Audit Policy Configuration\Audit Policies\Account Management\Audit User Account Management, DS Access > Audit Directory Service Changes, Group Policy : Computer Configuration\Windows Settings\Security Settings\Advanced Audit Policy Configuration\Audit Policies\DS Access\Audit Directory Service Changes' detection: selection1: EventID: 4738 filter_empty: AllowedToDelegateTo: - '' - '-' filter_null: AllowedToDelegateTo: null selection_5136_1: EventID: 5136 AttributeLDAPDisplayName: msDS-AllowedToDelegateTo selection_5136_2: EventID: 5136 ObjectClass: user AttributeLDAPDisplayName: servicePrincipalName selection_5136_3: EventID: 5136 AttributeLDAPDisplayName: msDS-AllowedToActOnBehalfOfOtherIdentity condition: (selection1 and not 1 of filter_*) or 1 of selection_5136_* falsepositives: - Unknown level: high
Near-miss passage: Sigma rule: Detects NetNTLM downgrade attack. Logsource: windows / registry_event. Rule: title: NetNTLM Downgrade Attack - Registry id: d67572a0-e2ec-45d6-b8db-c100d14b8ef2 status: test description: Detects NetNTLM downgrade attack references: - https://web.archive.org/web/20171113231705/https://www.optiv.com/blog/post-exploitation-using-netntlm-downgrade-attacks - https://www.ultimatewindowssecurity.com/wiki/page.aspx?spid=NSrpcservers author: Florian Roth (Nextron Systems), wagga, Nasreddine Bencherchali (Splunk STRT) date: 2018-03-20 modified: 2024-12-03 tags: - attack.persistence - attack.defense-impairment - attack.t1685 - attack.t1112 logsource: product: windows category: registry_event detection: selection_regkey: TargetObject|contains|all: - SYSTEM\ - ControlSet - \Control\Lsa selection_value_lmcompatibilitylevel: TargetObject|endswith: \lmcompatibilitylevel Details: - DWORD (0x00000000) - DWORD (0x00000001) - DWORD (0x00000002) selection_value_ntlmminclientsec: TargetObject|endswith: \NtlmMinClientSec Details: - DWORD (0x00000000) - DWORD (0x00000010) - DWORD (0x00000020) - DWORD (0x00000030) selection_value_restrictsendingntlmtraffic: TargetObject|endswith: \RestrictSendingNTLMTraffic condition: selection_regkey and 1 of selection_value_* falsepositives: - Services or tools that set the values to more restrictive values level: high