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Microsoft-Windows-Security-Auditing › Event 4657

Event ID 4657 — A registry value was modified.

Provider
Microsoft-Windows-Security-Auditing
Channel
Security
Audit Policy
Object Access → Registry
Collection Priority
Recommended (Microsoft-WEF, others)
Opcode
Info

Description

A registry value was modified.

Message #

A registry value was modified.

Subject:
	Security ID: %1
	Account Name: %2
	Account Domain: %3
	Logon ID: %4

Object:
	Object Name: %5
	Object Value Name: %6
	Handle ID: %7
	Operation Type: %8

Process Information:
	Process ID: %13
	Process Name: %14

Change Information:
	Old Value Type: %9
	Old Value: %10
	New Value Type: %11
	New Value: %12

Fields #

NameDescription
SubjectUserSid SID[Subject] Security ID.
SubjectUserName UnicodeString[Subject] Account Name.
SubjectDomainName UnicodeString[Subject] Account Domain.
SubjectLogonId HexInt64[Subject] Logon ID.
ObjectName UnicodeString[Object] Object Name.
ObjectValueName UnicodeString[Object] Object Value Name.
HandleId Pointer[Object] Handle ID.
OperationType UnicodeString[Object] Operation Type.
Known values
%%1904
New registry value created
%%1905
Existing registry value modified
%%1906
Registry value deleted
%%14674
Value Added
%%14675
Value Deleted
%%14680
Value Added With Expiration Time
%%14681
Value Deleted With Expiration Time
%%14688
Value Auto Deleted With Expiration Time
OldValueType UnicodeString[Change Information] Old Value Type.
Known values
%%1872
REG_NONE
%%1873
REG_SZ
%%1874
REG_EXPAND_SZ
%%1875
REG_BINARY
%%1876
REG_DWORD
%%1877
REG_DWORD_BIG_ENDIAN
%%1878
REG_LINK
%%1879
REG_MULTI_SZ (New lines are replaced with *. A * is replaced with **)
%%1880
REG_RESOURCE_LIST
%%1881
REG_FULL_RESOURCE_DESCRIPTOR
%%1882
REG_RESOURCE_REQUIREMENTS_LIST
%%1883
REG_QWORD
OldValue UnicodeString[Change Information] Old Value.
NewValueType UnicodeString[Change Information] New Value Type.
Known values
%%1872
REG_NONE
%%1873
REG_SZ
%%1874
REG_EXPAND_SZ
%%1875
REG_BINARY
%%1876
REG_DWORD
%%1877
REG_DWORD_BIG_ENDIAN
%%1878
REG_LINK
%%1879
REG_MULTI_SZ (New lines are replaced with *. A * is replaced with **)
%%1880
REG_RESOURCE_LIST
%%1881
REG_FULL_RESOURCE_DESCRIPTOR
%%1882
REG_RESOURCE_REQUIREMENTS_LIST
%%1883
REG_QWORD
NewValue UnicodeString[Change Information] New Value.
ProcessId Pointer[Process Information] Process ID.
ProcessName UnicodeString[Process Information] Process Name.

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-Security-Auditing",
    "guid": "54849625-5478-4994-A5BA-3E3B0328C30D",
    "event_source_name": "",
    "event_id": 4657,
    "version": 0,
    "level": 0,
    "task": 12801,
    "opcode": 0,
    "keywords": 9232379236109516800,
    "time_created": "2023-11-06T01:45:45.086232+00:00",
    "event_record_id": 292511,
    "correlation": {},
    "execution": {
      "process_id": 4,
      "thread_id": 12116
    },
    "channel": "Security",
    "computer": "WinDev2310Eval",
    "security": {
      "user_id": ""
    }
  },
  "event_data": {
    "SubjectUserSid": "S-1-5-18",
    "SubjectUserName": "WINDEV2310EVAL$",
    "SubjectDomainName": "WORKGROUP",
    "SubjectLogonId": "0x3e7",
    "ObjectName": "\\REGISTRY\\MACHINE\\SOFTWARE\\Microsoft\\SystemCertificates\\ROOT\\Certificates\\B51C067CEE2B0C3DF855AB2D92F4FE39D4E70F0E",
    "ObjectValueName": "Blob",
    "HandleId": "0x1994",
    "OperationType": "%%1905",
    "OldValueType": "%%1875",
    "OldValue": "%%1800",
    "NewValueType": "%%1875",
    "NewValue": "%%1800",
    "ProcessId": "0x328",
    "ProcessName": "C:\\Windows\\System32\\lsass.exe"
  },
  "message": ""
}

Detection Patterns #

Defense Evasion: Modify Registry

Security-Auditing Event ID 4657: A registry value was modified.OREvent ID 4663: An attempt was made to access an object.
1 rule

Sigma

Sysmon Channel Reference Deletion (source)
Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)

Community Notes #

Requires AuditRegistry/SetValue SACL.

Detection Rules #

View all rules referencing this event →

Sigma # view in reference

Kusto Query Language # view in reference

  • Scheduled Task Hide source high: 'This query detects attempts by malware to hide the scheduled task by deleting the SD (Security Descriptor) value. Removal of SD value results in the scheduled task disappearing from schtasks /query and Task Scheduler. The query requires auditing to be turned on for HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree registry hive as well as audit policy for registry auditing to be turned on. Reference: https://www.microsoft.com/security/blog/2022/04/12/tarrask-malware-uses-scheduled-tasks-for-defense-evasion/ Reference: https://4sysops.com/archives/audit-changes-in-the-windows-registry/'

References #