Microsoft-Windows-NTDSAI

15 events across 1 channel

Event	Title	Channel	Sample
101	Search_V1	Analytic	N
102	Search102_V1	Analytic	N
103	ReplicationDirectoryReplicateNCoperation_V1	Analytic	N
104	ReplicationDirectoryReplicateNCoperation104_V1	Analytic	N
105	ReplicationDirectoryReplicateNCoperation105_V1	Analytic	N
106	Statistic_V1	Analytic	N
107	Statistic107_V1	Analytic	N
108	Statistic108_V1	Analytic	N
109	SecurityAuditDirectoryIDL_DRSReplicaSyncRPCCallSecurityAudit_V1	Analytic	N
110	SecurityAuditDirectoryIDL_DRSGetNCChangesRPCCallSecurityAudit_V1	Analytic	N
111	SecurityAuditDirectoryGroupPolicyContainerUpdateSecurityAudit_V1	Analytic	N
112	SecurityAuditDirectoryLDAPReadSecurityAudit_V1	Analytic	N
113	SecurityAuditDirectoryLDAPPingSecurityAudit_V1	Analytic	N
114	SecurityAuditDirectoryLDAPBindSecurityAudit_V1	Analytic	N
115	Statistic115_V1	Analytic	N

Event ID 101: Search_V1

Provider: Microsoft-Windows-NTDSAI
Channel: Analytic
Task: Search

Message #

Ldap Search operation

Fields #

Name	Description
`Caller` AnsiString
`ElapsedTime` UInt64
`errCode` UInt32
`Signature` GUID
`CPUTime` UInt64
`QueueDelay` UInt64

Event ID 102: Search102_V1

Provider: Microsoft-Windows-NTDSAI
Channel: Analytic
Task: Search

Message #

Directory Search operation

Fields #

Name	Description
`Caller` AnsiString
`ElapsedTime` UInt64
`Scope` UInt8
`BaseDN` UnicodeString
`Filter` UnicodeString
`RequestedAttributes` UnicodeString
`CommArg` UnicodeString
`errCode` UInt32
`Indexes` AnsiString
`SearchEntriesVisited` UInt32
`SearchEntriesReturned` UInt32
`QueryOptimizerState` UnicodeString
`Signature` GUID
`CPUTime` UInt64
`QueueDelay` UInt64
`ThreadKiloCyclesTime` UInt64
`QOTime` UInt64
`EntrySelectionTime` UInt64
`AttributeReadTime` UInt64
`FilterMatchTime` UInt64

Event ID 103: ReplicationDirectoryReplicateNCoperation_V1

Provider: Microsoft-Windows-NTDSAI
Channel: Analytic
Task: Replication
Opcode: ReplicateNC

Message #

Directory ReplicationStart operation

Fields #

Name	Description
`DestinationGUID` GUID
`SourceGUID` GUID
`SourceName` UnicodeString
`NC` UnicodeString
`Flags` UInt32
`usnHighObjUpdate` UInt64
`usnHighPropUpdate` UInt64
`cMaxBytes` UInt32
`cMaxObjects` UInt32
`startTime` SYSTEMTIME
`correlationID` GUID

Event ID 104: ReplicationDirectoryReplicateNCoperation104_V1

Provider: Microsoft-Windows-NTDSAI
Channel: Analytic
Task: Replication
Opcode: ReplicateNC

Message #

Directory ReplicationProgress operation

Fields #

Name	Description
`DestinationGUID` GUID
`SourceGUID` GUID
`NC` UnicodeString
`Ret` UInt32
`fMoreData` UInt32
`usnHighObjUpdate` UInt64
`usnHighPropUpdate` UInt64
`cNumObjects` UInt32
`cNumValues` UInt32
`cNumBytes` UInt32
`numPackets` UInt32
`cTickPregressInterval` UInt32
`correlationID` GUID

Event ID 105: ReplicationDirectoryReplicateNCoperation105_V1

Provider: Microsoft-Windows-NTDSAI
Channel: Analytic
Task: Replication
Opcode: ReplicateNC

Message #

Directory ReplicationEnd operation

Fields #

Name	Description
`DestinationGUID` GUID
`SourceGUID` GUID
`NC` UnicodeString
`Ret` UInt32
`SyncFailure` UInt32
`RepFlags` UInt32
`numPackets` UInt32
`usnHighObjUpdate` UInt64
`usnHighPropUpdate` UInt64
`TotalBytesReceived` UInt32
`TotalObjectsReceived` UInt32
`TotalObjectsCreated` UInt32
`TotalValuesReceived` UInt32
`TotalValuesCreated` UInt32
`cTickReplicateNC` UInt32
`cTickUpdateNC` UInt32
`correlationID` GUID

Event ID 106: Statistic_V1

Provider: Microsoft-Windows-NTDSAI
Channel: Analytic
Task: Statistic

Message #

Batch Conflict

Fields #

Name	Description
`Blocked_CorrelationID` GUID
`Blocking_CorrelationID` GUID
`Blocked_DSCorrelationID` GUID
`Blocking_DSCorrelationID` GUID
`Blocked_DsName` UnicodeString
`Blocking_DsName` UnicodeString
`Blocked_AttributeName` AnsiString
`Blocking_AttributeName` AnsiString
`Blocked_Scope` UInt32
`Blocking_Scope` UInt32
`Blocked_AttributeLockType` UInt8
`Blocking_AttributeLockType` UInt8

Event ID 107: Statistic107_V1

Provider: Microsoft-Windows-NTDSAI
Channel: Analytic
Task: Statistic

Message #

Thread State Dump

Fields #

Name	Description
`SnapshotID` GUID
`ThreadName` UnicodeString
`LdapDn` UnicodeString
`SystemThreadID` UInt32
`CorrelationID` GUID
`MemoryUsage` UInt64
`ElapsedMS` UInt32
`BlockedBy` GUID
`Blocking` GUID
`RawCallData` UInt64
`DSIDHi` UInt16
`DSIDLo` UInt16
`Build` UnicodeString
`NumaProcessor` UInt32

Event ID 108: Statistic108_V1

Provider: Microsoft-Windows-NTDSAI
Channel: Analytic
Task: Statistic

Message #

Write Conflict

Fields #

Name	Description
`CorrelationID` GUID
`Caller` AnsiString
`ThreadLabel` UnicodeString
`Description` AnsiString
`Subsystem` UInt32
`DSID` UInt32
`Build` UnicodeString

Event ID 109: SecurityAuditDirectoryIDL_DRSReplicaSyncRPCCallSecurityAudit_V1

Provider: Microsoft-Windows-NTDSAI
Channel: Analytic
Task: SecurityAudit
Opcode: IDL_DRSReplicaSync

Message #

IDL_DRSReplicaSync RPC call

Fields #

Name	Description
`CallerSID` AnsiString
`CallerIP` AnsiString
`NC` UnicodeString
`Ret` UInt32

Event ID 110: SecurityAuditDirectoryIDL_DRSGetNCChangesRPCCallSecurityAudit_V1

Provider: Microsoft-Windows-NTDSAI
Channel: Analytic
Task: SecurityAudit
Opcode: IDL_DRSGetNCChanges

Message #

IDL_DRSGetNCChanges RPC call

Fields #

Name	Description
`CallerSID` AnsiString
`CallerIP` AnsiString
`NC` UnicodeString
`ObjectGUIDSizeInBytes` UInt32
`ObjectGUIDs` Binary
`Ret` UInt32

Event ID 111: SecurityAuditDirectoryGroupPolicyContainerUpdateSecurityAudit_V1

Provider: Microsoft-Windows-NTDSAI
Channel: Analytic
Task: SecurityAudit
Opcode: GPO_Update

Message #

GPO Update

Fields #

Name	Description
`CallerSID` AnsiString
`CallerIP` AnsiString
`DSName` UnicodeString
`Operation` UnicodeString

Event ID 112: SecurityAuditDirectoryLDAPReadSecurityAudit_V1

Provider: Microsoft-Windows-NTDSAI
Channel: Analytic
Task: SecurityAudit
Opcode: LDAPReadAudit

Message #

LDAP Read Audit

Fields #

Name	Description
`CallerSID` AnsiString
`CallerIP` AnsiString
`Base` UnicodeString
`Scope` UInt32
`Filter` UnicodeString

Event ID 113: SecurityAuditDirectoryLDAPPingSecurityAudit_V1

Provider: Microsoft-Windows-NTDSAI
Channel: Analytic
Task: SecurityAudit
Opcode: LDAPPingAudit

Message #

LDAP Ping Audit

Fields #

Name	Description
`CallerSID` SID
`CallerIP` AnsiString
`ResponseWithOpcode` UnicodeString
`Filter` UnicodeString

Event ID 114: SecurityAuditDirectoryLDAPBindSecurityAudit_V1

Provider: Microsoft-Windows-NTDSAI
Channel: Analytic
Task: SecurityAudit
Opcode: LDAPBindAudit

Message #

LDAP Bind Audit

Fields #

Name	Description
`AuthenticatedUSerIdentity` SID
`CallerIP` AnsiString
`AuthenticationMethod` AnsiString
`BindResultCodeAndMsg` AnsiString

Event ID 115: Statistic115_V1

Provider: Microsoft-Windows-NTDSAI
Channel: Analytic
Task: Statistic

Message #

Directory Request

Fields #

Name	Description
`CorrelationID` GUID
`Caller` AnsiString
`Label` UnicodeString
`DN` UnicodeString
`RequestType` UInt32
`SearchEntriesVisited` UInt32
`SearchEntriesReturned` UInt32
`EstimatedLinkExpense` UInt32
`ThreadSleepTime` UInt32
`LdapStatusCode` UInt32
`ProblemCode` UInt16
`ProblemData` UInt32
`Win32Error` UInt32
`ErrorDSID` UInt32
`RetryCount` UInt32
`WillRetry` UInt32
`CpuTime` UInt32
`CallTime` UInt32
`RemoteRPCTime` UInt32
`LdapTime` UInt32
`QueueDelay` UInt32
`MemoryUsage` UInt64
`Build` UnicodeString

Provenance

Where this provider's schema came from, and which Windows build it was observed on. Windows can change a provider's event schema between builds, so use this to judge whether it matches the build you collect from.

ETW provider GUID 552accf2-909b-5c66-f987-b7f5d250edcd

Defined in ntdsai.dll, which carries the event manifest.

Observed on:

WS2022-20348.4893, schema read from the registered manifest, binary version 10.0.20348.4767, captured 2026-06-02

Downloads

Microsoft-Windows-NTDSAI registered manifest XML (in the WS2022-20348.4893 manifest pack, 1.9 MB) manifest-xml

`j` / `k`	Scroll down / up
`d` / `u`	Half-page down / up
`gg` / `G`	Top / bottom
`h` / `l`	History back / forward
`f`	Follow link (`Shift` = new tab)
`/`	Focus search
`?`	Toggle this help
`↑` / `↓`	Navigate search results
`Enter`	Open highlighted result
`Esc`	Close results / dialog

`type:`	`events` / `rules` / `providers`
`vendor:`	`sigma` / `elastic` / `splunk` / `kusto` / `chronicle` (vendor name alone also works: `sigma:`, `kql:`, `secops:`…)
`tactic:`	TA-id, slug, or name: `credential_access`, `TA0006`
`technique:`	technique or sub-technique ID: `T1003`, `T1003.001` (alias `tech:`)
`severity:`	`critical` / `high` / `medium` / `low` / `informational` (alias `sev:`)
`risk_score`	Numeric comparison on the Elastic risk score (0 to 100): `risk_score>50`, `risk_score<=20`, `risk_score=99` (alias `risk`; Elastic rules only)
`stages:`	Rules with exactly N pipeline stages
`correlation:`	`single_event` / `sequence` / `alternatives` / `alternatives_cross_log` / `all_required` / `correlated`
`with:`	Co-occurrence event-id; stacks (`with:4624 with:4769`) to require all, while a comma list in one occurrence (`with:4624,4769`) is an either-or group. Implies multi-event
`like:`	Structural neighbors of a rule slug (equivalents + subsumption stricter / broader): `like:comsvcs_lsass_memory_dump-splunk-sysmon`
`groupby:`	Entity-grouping substring match against `group_by_keys`: `groupby:user`, `groupby:host`
`uses:`	Rules whose predicate tree touches the field (any kind, any value): `uses:CommandLine`
`excludes:`	Rules with top-level `not()` clauses on the field (FP whitelists): `excludes:ParentImage`
`field:` / `value:`	Predicate search; narrows rule cards to those with a matching leaf and drives the indicator tier. Unquoted = substring, wildcards allowed (`value:mimikatz`)
`indicator:`	Shorthand for `field:F value:V`: `indicator:Image=*\powershell.exe`
`kind:`	Filter by predicate kind. Narrows rule cards to those carrying a matching predicate leaf (`vendor:elastic kind:cidr_match`) and drives the indicator tier: `contains` / `starts_with` / `ends_with` / `regex` / `cidr` / `eq` / `in` … (operator aliases `op:`/`match:`)
`has:` / `no:`	`sample`, `field`, `notes`, `refs`, `trace`, `thirdparty`, `rule`, `pattern`, `timewindow`, `threshold`, `newterms`, `sigma`/`elastic`/`splunk`/`kusto`/`chronicle`
`-op:val`	Exclude matches; works on most operators but not `type:`/`like:`/`has:`/`no:` (use `no:<flag>` to exclude a rule flag): `tactic:execution -vendor:splunk`. Standalone `-kind:`/`-field:`/`-value:` drop every rule carrying a matching predicate leaf (`type:rules -kind:is_null`)
`field:"…"` / `value:"…"`	Quoted value = anchored exact match (also allows spaces): `value:"net user"`
`a,b`	Comma = OR inside one operator (`vendor:sigma,elastic`, `severity:high,critical`); repeating a facet merges the same way. `field:`/`value:` never split (literal commas)
`vendors:` / `stage:`	Singular and plural spellings fold to the canonical operator and value: `tactics:` = `tactic:`, `type:event` = `type:events`, `correlation:sequences` = `correlation:sequence`, `has:thresholds` = `has:threshold`
`"quoted phrase"`	Exact-match a multi-word phrase (free text)