Microsoft-Windows-OverlayFilter

19 events across 1 channel

Event	Title	Channel	Sample
24832	The filter failed to open the integrity file for FileNameBuffer (data source …	System	N
24833	The filter failed to validate block BlockNumber of length BlockLength from …	System	N
24834	The filter failed to validate a read from FileNameBuffer at file offset …	System	N
24835	The task is enumerating Volume volume.	System	N
24836	The task has failed to report integrity file generation completion to BitLocker.	System	N
24837	The task has created integrity file wimHashFile for file wimFile.	System	N
24838	The task has completed generation of integrity file wimHashFile for file …	System	N
24839	The task has deleted integrity file wimHashFile for file wimFile.	System	N
24840	The task is resuming generation of integrity file filename at file offset …	System	N
24841	The task has paused generation of integrity file filename at file offset offset.	System	N
24842	The task has failed to identify encryption/decryption state.	System	N
24843	The task has failed to generate integrity file wimHashFile for file wimFile.	System	N
24844	The task has failed to delete integrity file wimHashFile for file wimFile.	System	N
24845	The task has failed to read file at wimHashFile.	System	N
24846	The task has failed to write file at wimHashFile.	System	N
24847	The filter opened the integrity file for FileNameBuffer (data source …	System	N
24848	The filter did not open the integrity file for FileNameBuffer (data source …	System	N
24849	The task is generating integrity files	System	N
24850	The task is deleting integrity files	System	N

Event ID 24832: The filter failed to open the integrity file for FileNameBuffer (data source DataSourceId) with status Status.

Provider: Microsoft-Windows-OverlayFilter
Channel: System
Task: WIMintegrityverification
Opcode: IntegrityFileOpen

Description

The filter failed to open the integrity file for FileNameBuffer (data source DataSourceId) with status Status.

Message #

The filter failed to open the integrity file for %2 (data source %3) with status %4.

Fields #

Name	Description
`FileNameLength` UInt16
`FileNameBuffer` UnicodeString
`DataSourceId` Int64
`Status` HexInt32	NTSTATUS reference

Event ID 24833: The filter failed to validate block BlockNumber of length BlockLength from FileNameBuffer.

Provider: Microsoft-Windows-OverlayFilter
Channel: System
Task: WIMintegrityverification
Opcode: IntegrityBlockVerificationFailure

Description

The filter failed to validate block BlockNumber of length BlockLength from FileNameBuffer.

Message #

The filter failed to validate block %3 of length %4 from %2.

Fields #

Name	Description
`FileNameLength` UInt16
`FileNameBuffer` UnicodeString
`BlockNumber` UInt32
`BlockLength` UInt32

Event ID 24834: The filter failed to validate a read from FileNameBuffer at file offset FileOffset of length ReadSize.

Provider: Microsoft-Windows-OverlayFilter
Channel: System
Task: WIMintegrityverification
Opcode: IntegrityInvalidBlock

Description

The filter failed to validate a read from FileNameBuffer at file offset FileOffset of length ReadSize.

Message #

The filter failed to validate a read from %2 at file offset %3 of length %4.

Fields #

Name	Description
`FileNameLength` UInt16
`FileNameBuffer` UnicodeString
`FileOffset` Int64
`ReadSize` UInt32

Event ID 24835: The task is enumerating Volume volume.

Provider: Microsoft-Windows-OverlayFilter
Channel: System
Task: TheWindowsOverlayTask
Opcode: EnumVolume

Description

The task is enumerating Volume volume.

Message #

The task is enumerating Volume %1

Fields #

Name	Description
`volume` UnicodeString

Event ID 24836: The task has failed to report integrity file generation completion to BitLocker.

Provider: Microsoft-Windows-OverlayFilter
Channel: System
Task: TheWindowsOverlayTask
Opcode: ReportHashGenerationToBitlockerError

Description

The task has failed to report integrity file generation completion to BitLocker. HRESULT = hr.

Message #

The task has failed to report integrity file generation completion to BitLocker. HRESULT = %1

Fields #

Name	Description
`hr` UInt32

Event ID 24837: The task has created integrity file wimHashFile for file wimFile.

Provider: Microsoft-Windows-OverlayFilter
Channel: System
Task: TheWindowsOverlayTask
Opcode: CreateHashFile

Description

The task has created integrity file wimHashFile for file wimFile.

Message #

The task has created integrity file %1 for file %2

Fields #

Name	Description
`wimHashFile` UnicodeString
`wimFile` UnicodeString

Event ID 24838: The task has completed generation of integrity file wimHashFile for file wimFile.

Provider: Microsoft-Windows-OverlayFilter
Channel: System
Task: TheWindowsOverlayTask
Opcode: CompleteHashFile

Description

The task has completed generation of integrity file wimHashFile for file wimFile.

Message #

The task has completed generation of integrity file %1 for file %2

Fields #

Name	Description
`wimHashFile` UnicodeString
`wimFile` UnicodeString

Event ID 24839: The task has deleted integrity file wimHashFile for file wimFile.

Provider: Microsoft-Windows-OverlayFilter
Channel: System
Task: TheWindowsOverlayTask
Opcode: DeleteHashFile

Description

The task has deleted integrity file wimHashFile for file wimFile.

Message #

The task has deleted integrity file %1 for file %2

Fields #

Name	Description
`wimHashFile` UnicodeString
`wimFile` UnicodeString

Event ID 24840: The task is resuming generation of integrity file filename at file offset offset.

Provider: Microsoft-Windows-OverlayFilter
Channel: System
Task: TheWindowsOverlayTask
Opcode: ResumeHashFile

Description

The task is resuming generation of integrity file filename at file offset offset.

Message #

The task is resuming generation of integrity file %1 at file offset %2

Fields #

Name	Description
`filename` UnicodeString
`offset` UInt64

Event ID 24841: The task has paused generation of integrity file filename at file offset offset.

Provider: Microsoft-Windows-OverlayFilter
Channel: System
Task: TheWindowsOverlayTask
Opcode: PauseHashFile

Description

The task has paused generation of integrity file filename at file offset offset.

Message #

The task has paused generation of integrity file %1 at file offset %2

Fields #

Name	Description
`filename` UnicodeString
`offset` UInt64

Event ID 24842: The task has failed to identify encryption/decryption state.

Provider: Microsoft-Windows-OverlayFilter
Channel: System
Task: TheWindowsOverlayTask
Opcode: ActionError

Description

The task has failed to identify encryption/decryption state. HRESULT = hr.

Message #

The task has failed to identify encryption/decryption state. HRESULT = %1

Fields #

Name	Description
`hr` UInt32

Event ID 24843: The task has failed to generate integrity file wimHashFile for file wimFile.

Provider: Microsoft-Windows-OverlayFilter
Channel: System
Task: TheWindowsOverlayTask
Opcode: GenerateHashFileError

Description

The task has failed to generate integrity file wimHashFile for file wimFile. HRESULT = hr.

Message #

The task has failed to generate integrity file %1 for file %2. HRESULT = %3

Fields #

Name	Description
`wimHashFile` UnicodeString
`wimFile` UnicodeString
`hr` Int32

Event ID 24844: The task has failed to delete integrity file wimHashFile for file wimFile.

Provider: Microsoft-Windows-OverlayFilter
Channel: System
Task: TheWindowsOverlayTask
Opcode: DeleteHashFileError

Description

The task has failed to delete integrity file wimHashFile for file wimFile. HRESULT = hr.

Message #

The task has failed to delete integrity file %1 for file %2. HRESULT = %3

Fields #

Name	Description
`wimHashFile` UnicodeString
`wimFile` UnicodeString
`hr` Int32

Event ID 24845: The task has failed to read file at wimHashFile.

Provider: Microsoft-Windows-OverlayFilter
Channel: System
Task: TheWindowsOverlayTask
Opcode: FileReadError

Description

The task has failed to read file at wimHashFile. HRESULT = hr.

Message #

The task has failed to read file at %1. HRESULT = %3

Fields #

Name	Description
`wimHashFile` UnicodeString
`wimFile` UnicodeString
`hr` Int32

Event ID 24846: The task has failed to write file at wimHashFile.

Provider: Microsoft-Windows-OverlayFilter
Channel: System
Task: TheWindowsOverlayTask
Opcode: FileWriteError

Description

The task has failed to write file at wimHashFile. HRESULT = hr.

Message #

The task has failed to write file at %1. HRESULT = %3

Fields #

Name	Description
`wimHashFile` UnicodeString
`wimFile` UnicodeString
`hr` Int32

Event ID 24847: The filter opened the integrity file for FileNameBuffer (data source DataSourceId).

Provider: Microsoft-Windows-OverlayFilter
Channel: System
Task: WIMintegrityverification
Opcode: IntegrityFileOpen

Description

The filter opened the integrity file for FileNameBuffer (data source DataSourceId).

Message #

The filter opened the integrity file for %2 (data source %3).

Fields #

Name	Description
`FileNameLength` UInt16
`FileNameBuffer` UnicodeString
`DataSourceId` Int64

Event ID 24848: The filter did not open the integrity file for FileNameBuffer (data source DataSourceId) because it is not ready.

Provider: Microsoft-Windows-OverlayFilter
Channel: System
Task: WIMintegrityverification
Opcode: IntegrityFileOpen

Description

The filter did not open the integrity file for FileNameBuffer (data source DataSourceId) because it is not ready.

Message #

The filter did not open the integrity file for %2 (data source %3) because it is not ready.

Fields #

Name	Description
`FileNameLength` UInt16
`FileNameBuffer` UnicodeString
`DataSourceId` Int64

Event ID 24849: The task is generating integrity files

Provider: Microsoft-Windows-OverlayFilter
Channel: System
Task: TheWindowsOverlayTask
Opcode: ActionGenerateHashes

Description

The task is generating integrity files.

Message #

The task is generating integrity files

Event ID 24850: The task is deleting integrity files

Provider: Microsoft-Windows-OverlayFilter
Channel: System
Task: TheWindowsOverlayTask
Opcode: ActionDeleteHashes

Description

The task is deleting integrity files.

Message #

The task is deleting integrity files

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 46c78e5c-a213-46a8-8a6b-622f6916201d

Defined in wof.sys, the binary that emits these events.

Observed on:

WS2022-20348.4893, schema read from the registered manifest, binary version 10.0.20348.1, captured 2026-06-02
Win11-26200.6584, schema read from the registered manifest, binary version 10.0.26100.1, captured 2026-06-02

`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)

Microsoft-Windows-OverlayFilter

Event ID 24832: The filter failed to open the integrity file for FileNameBuffer (data source DataSourceId) with status Status.

Description

Message #

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Event ID 24833: The filter failed to validate block BlockNumber of length BlockLength from FileNameBuffer.

Description

Message #

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Event ID 24834: The filter failed to validate a read from FileNameBuffer at file offset FileOffset of length ReadSize.

Description

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Event ID 24835: The task is enumerating Volume volume.

Description

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Event ID 24836: The task has failed to report integrity file generation completion to BitLocker.

Description

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Event ID 24837: The task has created integrity file wimHashFile for file wimFile.

Description

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Event ID 24838: The task has completed generation of integrity file wimHashFile for file wimFile.

Description

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Event ID 24839: The task has deleted integrity file wimHashFile for file wimFile.

Description

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Event ID 24840: The task is resuming generation of integrity file filename at file offset offset.

Description

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Event ID 24841: The task has paused generation of integrity file filename at file offset offset.

Description

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Event ID 24842: The task has failed to identify encryption/decryption state.

Description

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Event ID 24843: The task has failed to generate integrity file wimHashFile for file wimFile.

Description

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Event ID 24844: The task has failed to delete integrity file wimHashFile for file wimFile.

Description

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Event ID 24845: The task has failed to read file at wimHashFile.

Description

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Event ID 24846: The task has failed to write file at wimHashFile.

Description

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Event ID 24847: The filter opened the integrity file for FileNameBuffer (data source DataSourceId).

Description

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Event ID 24848: The filter did not open the integrity file for FileNameBuffer (data source DataSourceId) because it is not ready.

Description

Message #

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Event ID 24849: The task is generating integrity files

Description

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Event ID 24850: The task is deleting integrity files

Description

Message #

Provenance

Downloads