Microsoft-Windows-Storsvc

3 events across 1 channel

Event	Title	Channel	Sample
1001	For internal use only.	Diagnostic	Y
1002	For internal use only.	Diagnostic	Y
1003	For internal use only.	Diagnostic	N

Event ID 1001: For internal use only.

Provider: Microsoft-Windows-Storsvc
Channel: Diagnostic
Level: Informational

Description

For internal use only.

Message #

For internal use only.

Fields #

Name	Description
`Version` UInt32
`DiskNumber` UInt32
`VendorId` AnsiString
`ProductId` AnsiString
`ProductRevision` AnsiString
`SerialNumber` AnsiString
`ParentId` UnicodeString
`FileSystem` UnicodeString
`BusType` UInt32
`PartitionStyle` UInt32
`VolumeCount` UInt32
`ContainsRawVolumes` Boolean
`Size` UInt64

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-Storsvc",
    "guid": "A963A23C-0058-521D-71EC-A1CCE6173F21",
    "event_source_name": "",
    "event_id": 1001,
    "version": 0,
    "level": 4,
    "task": 0,
    "opcode": 0,
    "keywords": 9223372036854775808,
    "time_created": "2022-04-07T17:41:20.034286+00:00",
    "event_record_id": 4,
    "correlation": {
      "ActivityID": "E0AAB88C-4A9F-0000-7BBB-AAE09F4AD801"
    },
    "execution": {
      "process_id": 1332,
      "thread_id": 4112
    },
    "channel": "Microsoft-Windows-Storsvc/Diagnostic",
    "computer": "WIN-FPV0DSIC9O6.lab.local",
    "security": {
      "user_id": "S-1-5-18"
    }
  },
  "event_data": {
    "Version": 2,
    "DiskNumber": 1,
    "VendorId": "VendorCo",
    "ProductId": "ProductCode",
    "ProductRevision": "2.00",
    "SerialNumber": "9207032533193411390",
    "ParentId": "USB\\VID_FFFF&PID_5678\\9207032533193411390",
    "FileSystem": "FAT32",
    "BusType": 7,
    "PartitionStyle": 0,
    "VolumeCount": 1,
    "ContainsRawVolumes": false,
    "Size": 16672358400
  },
  "message": ""
}

References #

Example event sourced from https://github.com/NextronSystems/evtx-baseline

Event ID 1002: For internal use only.

Provider: Microsoft-Windows-Storsvc
Channel: Diagnostic
Level: Informational

Description

For internal use only.

Message #

For internal use only.

Fields #

Name	Description
`Version` UInt32
`Epoch` UInt32
`DiskIndex` UInt32
`TotalDisks` UInt32
`DiskNumber` UInt32
`VendorId` AnsiString
`ProductId` AnsiString
`ProductRevision` AnsiString
`SerialNumber` AnsiString
`ParentId` UnicodeString
`FileSystem` UnicodeString
`BusType` UInt32
`PartitionStyle` UInt32
`VolumeCount` UInt32
`ContainsRawVolumes` Boolean
`Size` UInt64

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-Storsvc",
    "guid": "A963A23C-0058-521D-71EC-A1CCE6173F21",
    "event_source_name": "",
    "event_id": 1002,
    "version": 0,
    "level": 4,
    "task": 0,
    "opcode": 0,
    "keywords": 9223372036854775808,
    "time_created": "2023-11-05T23:34:26.042356+00:00",
    "event_record_id": 1,
    "correlation": {
      "ActivityID": "E4DB489E-1037-0003-B784-DBE43710DA01"
    },
    "execution": {
      "process_id": 7484,
      "thread_id": 5344
    },
    "channel": "Microsoft-Windows-Storsvc/Diagnostic",
    "computer": "WinDev2310Eval",
    "security": {
      "user_id": "S-1-5-18"
    }
  },
  "event_data": {
    "Version": 2,
    "Epoch": 0,
    "DiskIndex": 0,
    "TotalDisks": 1,
    "DiskNumber": 0,
    "VendorId": "VMware, ",
    "ProductId": "VMware Virtual S",
    "ProductRevision": "1.0 ",
    "SerialNumber": "",
    "ParentId": "PCI\\VEN_1000&DEV_0054&SUBSYS_197615AD&REV_01\\4&2509F6E&0&00A8",
    "FileSystem": "NTFS",
    "BusType": 10,
    "PartitionStyle": 1,
    "VolumeCount": 3,
    "ContainsRawVolumes": false,
    "Size": 134217728000
  },
  "message": ""
}

References #

Example event sourced from https://github.com/NextronSystems/evtx-baseline

Event ID 1003: For internal use only.

Provider: Microsoft-Windows-Storsvc
Channel: Diagnostic

Description

For internal use only.

Message #

For internal use only.

Fields #

Name	Description
`Version` UInt32
`PoliciesEnabled` AnsiString
`StorageType` UInt32
`DeviceIndex` UInt32
`Flags` UInt32
`VolumeStatus` UInt32
`TargetSizeMB` UInt32
`CleanedBytes` AnsiString
`CleanupSucceeded` AnsiString
`CleanupFailed` AnsiString
`TotalBytes` UInt64
`FreeBytesBefore` UInt64
`FreeBytesAfter` UInt64
`StorageReserveBefore` AnsiString
`StorageReserveAfter` AnsiString
`HR` Int32
`HrReserveInit` Int32
`IsLowStorage` Boolean

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 a963a23c-0058-521d-71ec-a1cce6173f21

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

Observed on:

WS2022-20348.4893, schema read from the registered manifest, binary version 10.0.20348.3095, 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-Storsvc

Event ID 1001: For internal use only.

Description

Message #

Fields #

Example Event #

References #

Event ID 1002: For internal use only.

Description

Message #

Fields #

Example Event #

References #

Event ID 1003: For internal use only.

Description

Message #

Fields #

Provenance

Downloads

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