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Windows Events

Decrypt call failed

Event ID 1015 Microsoft-Windows-SMBServer/Security

Main fields

IP address
IP
Windows IP
ELK -
Microsoft Sentinel -
QRadar -
Splunk -
Computer name
Computer
Windows Computer
ELK winlog.computer_name
Microsoft Sentinel -
QRadar -
Splunk -
User name
Not selected
Important field
ClientAddress
Windows Client Address
ELK -
Microsoft Sentinel -
QRadar -
Splunk -

Fields

Windows Raw Windows ELK Microsoft Sentinel QRadar Splunk
ClientName Client Name winlog.user_data.ClientName - - -
ClientAddress Client Address - - - -
Status Status winlog.event_data.Status - - -
IP System field IP System field - - - -
Computer System field Computer System field winlog.computer_name - - -
ProcessID System field ProcessID System field winlog.process.pid - - -
ThreadID System field ThreadID System field winlog.process.thread.id - - -

Sample Event

- <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
- <System>
  <Provider Name="Microsoft-Windows-SMBServer" Guid="{d48ce617-33a2-4bc3-a5c7-11aa4f29619e}" /> 
  <EventID>1015</EventID> 
  <Version>0</Version> 
  <Level>2</Level> 
  <Task>1015</Task> 
  <Opcode>0</Opcode> 
  <Keywords>0x800000000000008</Keywords> 
  <TimeCreated SystemTime="2026-08-02T14:45:55.0051341Z" /> 
  <EventRecordID>363</EventRecordID> 
  <Correlation /> 
  <Execution ProcessID="4" ThreadID="10172" /> 
  <Channel>Microsoft-Windows-SMBServer/Security</Channel> 
  <Computer>DC.socpedia.net</Computer> 
  <Security UserID="S-1-5-18" /> 
  </System>
- <UserData>
- <EventData xmlns="Smb2Namespace">
  <ClientNameLength>30</ClientNameLength> 
  <ClientName>\</ClientName> 
  <ClientAddressLength>128</ClientAddressLength> 
  <ClientAddress>0200DE8AC0A800ED00000000000000000000FFFFC0A800ED0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000</ClientAddress> 
  <Status>0xc0000203</Status> 
  <TranslatedStatus>0xc0000203</TranslatedStatus> 
  <SessionID>0x0</SessionID> 
  </EventData>
  </UserData>
  </Event>

SOCpedia - knowledge platform

This section contains materials on SOC and Blue Team practices: articles, news, books, and translations.