Details of the event with ID 5059 of the source Microsoft-Windows-Security-Auditing

Author Uwe Gradenegger Posted on Categories Security, Certification Authority, Events Tags Event Viewer
Event Source:Microsoft-Windows-Security-Auditing
Event ID:5059 (0x13C3)
Event log:Security
Event type:Information
Event text (English):Key migration operation. Subject: Security ID: %1 Account Name: %2 Account Domain: %3 Logon ID: %4 Cryptographic Parameters: Provider Name: %5 Algorithm Name: %6 Key Name: %7 Key Type: %8 Additional Information: Operation: %9 Return Code: %10
Event text (German):Schlüsselmigrationsvorgang. Antragsteller: Sicherheits-ID: %1 Kontoname: %2 Kontodomäne: %3 Anmelde-ID: %4 Kryptografische Parameter: Anbietername: %5 Algorithmusname: %6 Schlüsselname: %7 Schlüsseltyp: %8 Zusätzliche Informationen: Vorgang: %9 Rückgabecode: %10

Parameter

The parameters contained in the event text are filled with the following fields:

  • %1: SubjectUserSid (win:SID)
  • %2: SubjectUserName (win:UnicodeString)
  • %3: SubjectDomainName (win:UnicodeString)
  • %4: SubjectLogonId (win:HexInt64)
  • %5: ProviderName (win:UnicodeString)
  • %6: AlgorithmName (win:UnicodeString)
  • %7: KeyName (win:UnicodeString)
  • %8: KeyType (win:UnicodeString)
  • %9: Operation (win:UnicodeString)
  • %10: ReturnCode (win:HexInt32)

In contrast to operational events, which are often understood under the term "monitoring", auditing for the certification authority is the configuration of logging of security-relevant events.

Example events

Key migration operation.

Subject:
    Security ID: SYSTEM
    Account Name: CA02$
    Account Domain: INTRA
    Logon ID: 0x3E7

Process Information:
    Process ID: 1304
    Process Creation Time: ‎2020‎-‎08‎-‎24T15:50:54.567208200Z

Cryptographic Parameters:
    Provider Name: Microsoft Software Key Storage Provider
    Algorithm Name: RSA
    Key Name: ADCS Labor Issuing CA 1
    Key Type: Machine key.

Additional Information:
    Operation: Export of persistent cryptographic key.
    Return Code: 0x0

Description

Do you know TameMyCerts? TameMyCerts is an add-on for the Microsoft certification authority (Active Directory Certificate Services). It extends the function of the certification authority and enables the application of rule sets to realize the secure automation of certificate issuance. TameMyCerts is unique in the Microsoft ecosystem, has already proven itself in countless companies around the world and is available under a free license. It can be downloaded via GitHub and used free of charge. Professional maintenance is also offered.

This event occurs when a software-based key is accessed. The same applies if a certification authority has a software key and accesses it.

It occurs together with the event with ID 5058 of the source Microsoft-Windows-Security-Auditing .

The event occurs only when auditing is enabled for "Other System Events".

Security assessment

The security assessment is based on the three dimensions of confidentiality, integrity and availability.

This event can be evaluated as critical for integrity if the certification authority key is accessed outside the context of the certification authority. The certification authority service runs in the "SYSTEM" context.

It is therefore a good idea to set up monitoring for this event and filter it using the following criteria:

  • Access is not through the "SYSTEM" account.
  • (Optional) Access is to a specific named key (see event details.

Windows Event Forwarding (WEF) example:

{QueryList}
  {Query Id="0" Path="Security"}
    {Select Path="Security"}
      *[System[(EventID='5058') or (EventID='5059')]] and
      *[EventData[Data[@Name="SubjectLogonId"] != "0x3e7"]]
    {/Select}
  {/Query}
{/QueryList}

External sources