detection.wiki

Microsoft-Windows-Security-Auditing › Event 4764

Event ID 4764 — A group’s type was changed.

Provider
Microsoft-Windows-Security-Auditing
Channel
Security
Audit Policy
Account Management → Security Group Management
Collection Priority
Recommended (Yamato Security, others)
Opcode
Info

Description

A group?s type was changed.

Message #

A group?s type was changed.

Subject:
	Security ID: %5
	Account Name: %6
	Account Domain: %7
	Logon ID: %8

Change Type: %1

Group:
	Security ID: %4
	Group Name: %2
	Group Domain: %3

Additional Information:
	Privileges: %9

Fields #

NameDescription
GroupTypeChange UnicodeStringChange Type
TargetUserName UnicodeString[Group] Group Name
TargetDomainName UnicodeString[Group] Group Domain
TargetSid SID[Group] Security ID
SubjectUserSid SID[Subject] Security ID
SubjectUserName UnicodeString[Subject] Account Name
SubjectDomainName UnicodeString[Subject] Account Domain
SubjectLogonId HexInt64[Subject] Logon ID
PrivilegeList UnicodeString[Additional Information] Privileges Privilege constants reference
Change_Type UnicodeString[Subject] Change Type.
Group_Name UnicodeString[Group] Group Name.
Group_Domain UnicodeString[Group] Group Domain.
Security_ID SID[Group] Security ID.
Account_Name UnicodeString[Subject] Account Name.
Account_Domain UnicodeString[Subject] Account Domain.
Logon_ID HexInt64[Subject] Logon ID.
Privileges UnicodeString[Additional Information] Privileges. Privilege constants reference

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-Security-Auditing",
    "guid": "54849625-5478-4994-A5BA-3E3B0328C30D",
    "event_source_name": "",
    "event_id": 4764,
    "version": 0,
    "level": 0,
    "task": 13826,
    "opcode": 0,
    "keywords": 9232379236109516800,
    "time_created": "2026-03-13T20:16:10.897820+00:00",
    "event_record_id": 16240135,
    "correlation": {},
    "execution": {
      "process_id": 968,
      "thread_id": 6288
    },
    "channel": "Security",
    "computer": "LAB-DC01.ludus.domain",
    "security": {
      "user_id": ""
    }
  },
  "event_data": {
    "GroupTypeChange": "Security Disabled Global Group Changed to Security Enabled Global Group.",
    "TargetUserName": "evtgen_distro",
    "TargetDomainName": "ludus",
    "TargetSid": "S-1-5-21-1006758700-2167138679-1475694448-1121",
    "SubjectUserSid": "S-1-5-21-1006758700-2167138679-1475694448-1105",
    "SubjectUserName": "domainadmin",
    "SubjectDomainName": "ludus",
    "SubjectLogonId": "0xa981e",
    "PrivilegeList": "-"
  },
  "message": ""
}

Detection Patterns #

References #