Microsoft-Windows-Subsys-SMSS

32 events across 2 channels

Event	Title	Channel	Sample
1	smss:ExecuteImageStart	Operational	N
2	smss:ExecuteImageStop	Operational	N
3	smss:InitializeRegistryStart	Operational	N
4	smss:InitializeRegistryStop	Operational	N
5	smss:SetupExecuteListStart	Operational	N
6	smss:SetupExecuteListStop	Operational	N
7	smss:BootExecuteListStart	Operational	N
8	smss:BootExecuteListStop	Operational	N
9	smss:ProcessFileRenamesStart	Operational	N
10	smss:ProcessFileRenamesStop	Operational	N
11	smss:FileRename	Operational	N
12	The crash dump file could not be created due to a lack of free space on the …	System	N
13	A run level switch from the CurrentRunLevel level to the TargetRunLevel level …	System	N
14	A run level switch from the CurrentRunLevel level to the TargetRunLevel level …	System	N
15	A run level switch from the CurrentRunLevel level to the TargetRunLevel level …	System	N
16	A run level switch from the CurrentRunLevel level to the TargetRunLevel level …	System	N
17	A platform binary was successfully executed.	System	N
18	An attempt to execute a platform binary failed with error code Status.	System	N
19	smss:BootExecuteNoPnpSyncListStart	Operational	N
20	smss:BootExecuteNoPnpSyncListStop	Operational	N
21	smss:SerializeBootStart	Operational	N
22	smss:SerializeBootStop	Operational	N
23	smss:LoadSubsystemStart	Operational	N
24	smss:LoadSubsystemStop	Operational	N
25	smss:InitializeKnownDllsStart	Operational	N
26	smss:InitializeKnownDllsStop	Operational	N
27	smss:PlatformExecuteListStart	Operational	N
28	smss:PlatformExecuteListStop	Operational	N
29	smss:SetupExecuteNoPnpSyncListStart	Operational	N
30	smss:SetupExecuteNoPnpSyncListStop	Operational	N
31	smss:RunSecureKernelTrustletsStart	Operational	N
32	smss:RunSecureKernelTrustletsStop	Operational	N

Event ID 1: smss:ExecuteImageStart

Provider: Microsoft-Windows-Subsys-SMSS
Channel: Operational
Task: smss:ExecuteImage
Opcode: Start

Fields #

Name	Description
`Flags` UInt32
`ImageNameLength` UInt16
`ImageName` UnicodeString

Event ID 2: smss:ExecuteImageStop

Provider: Microsoft-Windows-Subsys-SMSS
Channel: Operational
Task: smss:ExecuteImage
Opcode: Stop

Fields #

Name	Description
`ProcessId` UInt32

Event ID 3: smss:InitializeRegistryStart

Provider: Microsoft-Windows-Subsys-SMSS
Channel: Operational
Task: smss:InitializeRegistry
Opcode: Start

Event ID 4: smss:InitializeRegistryStop

Provider: Microsoft-Windows-Subsys-SMSS
Channel: Operational
Task: smss:InitializeRegistry
Opcode: Stop

Event ID 5: smss:SetupExecuteListStart

Provider: Microsoft-Windows-Subsys-SMSS
Channel: Operational
Task: smss:SetupExecuteList
Opcode: Start

Event ID 6: smss:SetupExecuteListStop

Provider: Microsoft-Windows-Subsys-SMSS
Channel: Operational
Task: smss:SetupExecuteList
Opcode: Stop

Event ID 7: smss:BootExecuteListStart

Provider: Microsoft-Windows-Subsys-SMSS
Channel: Operational
Task: smss:BootExecuteList
Opcode: Start

Event ID 8: smss:BootExecuteListStop

Provider: Microsoft-Windows-Subsys-SMSS
Channel: Operational
Task: smss:BootExecuteList
Opcode: Stop

Event ID 9: smss:ProcessFileRenamesStart

Provider: Microsoft-Windows-Subsys-SMSS
Channel: Operational
Task: smss:ProcessFileRenames
Opcode: Start

Event ID 10: smss:ProcessFileRenamesStop

Provider: Microsoft-Windows-Subsys-SMSS
Channel: Operational
Task: smss:ProcessFileRenames
Opcode: Stop

Event ID 11: smss:FileRename

Provider: Microsoft-Windows-Subsys-SMSS
Channel: Operational
Task: smss:FileRename

Fields #

Name	Description
`FromNameLength` UInt16
`ToNameLength` UInt16
`FromName` UnicodeString
`ToName` UnicodeString

Event ID 12: The crash dump file could not be created due to a lack of free space on the destination drive.

Provider: Microsoft-Windows-Subsys-SMSS
Channel: System
Opcode: Info

Description

The crash dump file could not be created due to a lack of free space on the destination drive. Increasing the amount of free space on the destination drive may help prevent this error.

Message #

The crash dump file could not be created due to a lack of free space on the destination drive. Increasing the amount of free space on the destination drive may help prevent this error.

Fields #

Name	Description
`FileNameLength` UInt16
`FileName` UnicodeString

Event ID 13: A run level switch from the CurrentRunLevel level to the TargetRunLevel level has started.

Provider: Microsoft-Windows-Subsys-SMSS
Channel: System
Opcode: Info

Description

A run level switch from the CurrentRunLevel level to the TargetRunLevel level has started.

Message #

A run level switch from the %1 level to the %2 level has started.

Fields #

Name	Description
`CurrentRunLevel` UnicodeString
`TargetRunLevel` UnicodeString

Event ID 14: A run level switch from the CurrentRunLevel level to the TargetRunLevel level has ended successfully.

Provider: Microsoft-Windows-Subsys-SMSS
Channel: System
Opcode: Info

Description

A run level switch from the CurrentRunLevel level to the TargetRunLevel level has ended successfully.

Message #

A run level switch from the %1 level to the %2 level has ended successfully.

Fields #

Name	Description
`CurrentRunLevel` UnicodeString
`TargetRunLevel` UnicodeString

Event ID 15: A run level switch from the CurrentRunLevel level to the TargetRunLevel level was failed by AgentName with the following error: Error For more details, please refer to events logged ...

Provider: Microsoft-Windows-Subsys-SMSS
Channel: System
Opcode: Info

Description

A run level switch from the CurrentRunLevel level to the TargetRunLevel level was failed by.

Message #

A run level switch from the %1 level to the %2 level was failed by 
%3 with the following error: 

%4

For more details, please refer to events logged by this agent.

Fields #

Name	Description
`CurrentRunLevel` UnicodeString
`TargetRunLevel` UnicodeString
`AgentName` UnicodeString
`Error` UnicodeString

Event ID 16: A run level switch from the CurrentRunLevel level to the TargetRunLevel level was succeeded by AgentName with the following warning: Error For more details, please refer to events lo...

Provider: Microsoft-Windows-Subsys-SMSS
Channel: System
Opcode: Info

Description

A run level switch from the CurrentRunLevel level to the TargetRunLevel level was succeeded by.

Message #

A run level switch from the %1 level to the %2 level was succeeded by 
%3 with the following warning: 

%4

For more details, please refer to events logged by this agent.

Fields #

Name	Description
`CurrentRunLevel` UnicodeString
`TargetRunLevel` UnicodeString
`AgentName` UnicodeString
`Error` UnicodeString

Event ID 17: A platform binary was successfully executed.

Provider: Microsoft-Windows-Subsys-SMSS
Channel: System
Opcode: Info

Description

A platform binary was successfully executed.

Message #

A platform binary was successfully executed.

Event ID 18: An attempt to execute a platform binary failed with error code Status.

Provider: Microsoft-Windows-Subsys-SMSS
Channel: System
Opcode: Info

Description

An attempt to execute a platform binary failed with error code Status.

Message #

An attempt to execute a platform binary failed with error code %1.

Fields #

Name	Description
`Status` UInt32	NTSTATUS reference

Event ID 19: smss:BootExecuteNoPnpSyncListStart

Provider: Microsoft-Windows-Subsys-SMSS
Channel: Operational
Task: smss:BootExecuteNoPnpSyncList
Opcode: Start

Event ID 20: smss:BootExecuteNoPnpSyncListStop

Provider: Microsoft-Windows-Subsys-SMSS
Channel: Operational
Task: smss:BootExecuteNoPnpSyncList
Opcode: Stop

Event ID 21: smss:SerializeBootStart

Provider: Microsoft-Windows-Subsys-SMSS
Channel: Operational
Task: smss:SerializeBoot
Opcode: Start

Event ID 22: smss:SerializeBootStop

Provider: Microsoft-Windows-Subsys-SMSS
Channel: Operational
Task: smss:SerializeBoot
Opcode: Stop

Fields #

Name	Description
`Status` UInt32	NTSTATUS reference

Event ID 23: smss:LoadSubsystemStart

Provider: Microsoft-Windows-Subsys-SMSS
Channel: Operational
Task: smss:LoadSubsystem
Opcode: Start

Fields #

Name	Description
`SessionId` UInt32
`ImageNameLength` UInt16
`ImageName` UnicodeString

Event ID 24: smss:LoadSubsystemStop

Provider: Microsoft-Windows-Subsys-SMSS
Channel: Operational
Task: smss:LoadSubsystem
Opcode: Stop

Fields #

Name	Description
`Status` UInt32	NTSTATUS reference

Event ID 25: smss:InitializeKnownDllsStart

Provider: Microsoft-Windows-Subsys-SMSS
Channel: Operational
Task: smss:InitializeKnownDlls
Opcode: Start

Event ID 26: smss:InitializeKnownDllsStop

Provider: Microsoft-Windows-Subsys-SMSS
Channel: Operational
Task: smss:InitializeKnownDlls
Opcode: Stop

Fields #

Name	Description
`Status` UInt32	NTSTATUS reference

Event ID 27: smss:PlatformExecuteListStart

Provider: Microsoft-Windows-Subsys-SMSS
Channel: Operational
Task: smss:PlatformExecuteList
Opcode: Start

Event ID 28: smss:PlatformExecuteListStop

Provider: Microsoft-Windows-Subsys-SMSS
Channel: Operational
Task: smss:PlatformExecuteList
Opcode: Stop

Event ID 29: smss:SetupExecuteNoPnpSyncListStart

Provider: Microsoft-Windows-Subsys-SMSS
Channel: Operational
Task: smss:SetupExecuteNoPnpSyncList
Opcode: Start

Event ID 30: smss:SetupExecuteNoPnpSyncListStop

Provider: Microsoft-Windows-Subsys-SMSS
Channel: Operational
Task: smss:SetupExecuteNoPnpSyncList
Opcode: Stop

Event ID 31: smss:RunSecureKernelTrustletsStart

Provider: Microsoft-Windows-Subsys-SMSS
Channel: Operational
Task: smss:RunSecureKernelTrustlets
Opcode: Start

Event ID 32: smss:RunSecureKernelTrustletsStop

Provider: Microsoft-Windows-Subsys-SMSS
Channel: Operational
Task: smss:RunSecureKernelTrustlets
Opcode: Stop

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 43e63da5-41d1-4fbf-aded-1bbed98fdd1d

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

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-Subsys-SMSS

Event ID 1: smss:ExecuteImageStart

Fields #

Event ID 2: smss:ExecuteImageStop

Fields #

Event ID 3: smss:InitializeRegistryStart

Event ID 4: smss:InitializeRegistryStop

Event ID 5: smss:SetupExecuteListStart

Event ID 6: smss:SetupExecuteListStop

Event ID 7: smss:BootExecuteListStart

Event ID 8: smss:BootExecuteListStop

Event ID 9: smss:ProcessFileRenamesStart

Event ID 10: smss:ProcessFileRenamesStop

Event ID 11: smss:FileRename

Fields #

Event ID 12: The crash dump file could not be created due to a lack of free space on the destination drive.

Description

Message #

Fields #

Event ID 13: A run level switch from the CurrentRunLevel level to the TargetRunLevel level has started.

Description

Message #

Fields #

Event ID 14: A run level switch from the CurrentRunLevel level to the TargetRunLevel level has ended successfully.

Description

Message #

Fields #

Event ID 15: A run level switch from the CurrentRunLevel level to the TargetRunLevel level was failed by AgentName with the following error: Error For more details, please refer to events logged ...

Description

Message #

Fields #

Event ID 16: A run level switch from the CurrentRunLevel level to the TargetRunLevel level was succeeded by AgentName with the following warning: Error For more details, please refer to events lo...

Description

Message #

Fields #

Event ID 17: A platform binary was successfully executed.

Description

Message #

Event ID 18: An attempt to execute a platform binary failed with error code Status.

Description

Message #

Fields #

Event ID 19: smss:BootExecuteNoPnpSyncListStart

Event ID 20: smss:BootExecuteNoPnpSyncListStop

Event ID 21: smss:SerializeBootStart

Event ID 22: smss:SerializeBootStop

Fields #

Event ID 23: smss:LoadSubsystemStart

Fields #

Event ID 24: smss:LoadSubsystemStop

Fields #

Event ID 25: smss:InitializeKnownDllsStart

Event ID 26: smss:InitializeKnownDllsStop

Fields #

Event ID 27: smss:PlatformExecuteListStart

Event ID 28: smss:PlatformExecuteListStop

Event ID 29: smss:SetupExecuteNoPnpSyncListStart

Event ID 30: smss:SetupExecuteNoPnpSyncListStop

Event ID 31: smss:RunSecureKernelTrustletsStart

Event ID 32: smss:RunSecureKernelTrustletsStop

Provenance

Downloads