Microsoft-Windows-RPCSS

3 events across 1 channel

Event	Title	Channel	Sample
1	An error occurred.	EndpointMapper	N
2	Interface registered.	EndpointMapper	Y
3	Interface unregistered.	EndpointMapper	Y

Event ID 1: An error occurred.

Provider: Microsoft-Windows-RPCSS
Channel: EndpointMapper

Description

An error occurred.

Message #

An error occurred. 
	DetectionLocation: %1 
	Status: %2 
	AddionalData: %3 
	AdditionalData: %4

Fields #

Name	Description
`DetectionLocation` UInt16
`Status` HexInt32	NTSTATUS reference
`AdditionalData1` HexInt32
`AdditionalData2` HexInt32

Event ID 2: Interface registered.

Provider: Microsoft-Windows-RPCSS
Channel: EndpointMapper
Also via: realtime ETW trace
Level: Informational

Description

Interface registered.

Message #

Interface registered. 
	InterfaceUuid: %1 
	ObjectUuid: %2 
	Protocol: %3 
	Endpoint: %4

Fields #

Name	Description
`InterfaceUUID` GUID
`ObjectUUID` GUID
`Protocol` AnsiString	Known values `0` HOPOPT `1` ICMP `2` IGMP `6` TCP `17` UDP `41` IPv6 `43` IPv6-Route `44` IPv6-Frag `47` GRE `50` ESP `51` AH `58` ICMPv6 `89` OSPF `103` PIM `132` SCTP
`EndPoint` AnsiString

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-RPCSS",
    "guid": "{D8975F88-7DDB-4ED0-91BF-3ADF48C48E0C}",
    "event_source_name": "",
    "event_id": 2,
    "version": 1,
    "level": 4,
    "task": 0,
    "opcode": 0,
    "keywords": "0x0000000000000200",
    "time_created": "2026-06-02T04:01:27.424+00:00",
    "event_record_id": 0,
    "correlation": {},
    "execution": {
      "process_id": 1028,
      "thread_id": 6340
    },
    "channel": "ETW Trace",
    "computer": "DESKTOP-FF3N5XK",
    "security": {
      "user_id": ""
    }
  },
  "event_data": {
    "EndPoint": "LRPC-8fd950c9bbf807c1b7",
    "InterfaceUUID": "{C9AC6DB5-82B7-4E55-AE8A-E464ED7B4277}",
    "ObjectUUID": "{6C637067-6569-746E-0000-000000000000}",
    "Protocol": "ncalrpc"
  },
  "message": ""
}

Event ID 3: Interface unregistered.

Provider: Microsoft-Windows-RPCSS
Channel: EndpointMapper
Also via: realtime ETW trace
Level: Informational

Description

Interface unregistered.

Message #

Interface unregistered. 
	InterfaceUuid: %1 
	ObjectUuid: %2 
	Protocol: %3 
	Endpoint: %4

Fields #

Name	Description
`InterfaceUUID` GUID
`ObjectUUID` GUID
`Protocol` AnsiString	Known values `0` HOPOPT `1` ICMP `2` IGMP `6` TCP `17` UDP `41` IPv6 `43` IPv6-Route `44` IPv6-Frag `47` GRE `50` ESP `51` AH `58` ICMPv6 `89` OSPF `103` PIM `132` SCTP
`EndPoint` AnsiString

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-RPCSS",
    "guid": "{D8975F88-7DDB-4ED0-91BF-3ADF48C48E0C}",
    "event_source_name": "",
    "event_id": 3,
    "version": 1,
    "level": 4,
    "task": 0,
    "opcode": 0,
    "keywords": "0x0000000000000400",
    "time_created": "2026-06-02T04:01:27.324+00:00",
    "event_record_id": 0,
    "correlation": {},
    "execution": {
      "process_id": 1028,
      "thread_id": 6340
    },
    "channel": "ETW Trace",
    "computer": "DESKTOP-FF3N5XK",
    "security": {
      "user_id": ""
    }
  },
  "event_data": {
    "EndPoint": "LRPC-a24919522e880eb43f",
    "InterfaceUUID": "{2EB08E3E-639F-4FBA-97B1-14F878961076}",
    "ObjectUUID": "{24D1F7C7-76AF-4F28-9CCD-7F6CB6468601}",
    "Protocol": "ncalrpc"
  },
  "message": ""
}

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 {D8975F88-7DDB-4ED0-91BF-3ADF48C48E0C}

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

Observed on:

Win11-26200.6584, sample captured from a live trace, binary version 10.0.26100.1, captured 2026-06-02
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-RPCSS

Event ID 1: An error occurred.

Description

Message #

Fields #

Event ID 2: Interface registered.

Description

Message #

Fields #

Example Event #

Event ID 3: Interface unregistered.

Description

Message #

Fields #

Example Event #

Provenance

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