SigmaHQ/tools/config/winlogbeat.yml

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title: Elastic Winlogbeat (from 7.x) index pattern and field mapping
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order: 20
backends:
- es-qs
- es-dsl
- es-rule
- kibana
- xpack-watcher
- elastalert
- elastalert-dsl
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- ee-outliers
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logsources:
windows:
product: windows
index: winlogbeat-*
windows-application:
product: windows
service: application
conditions:
winlog.channel: Application
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windows-security:
product: windows
service: security
conditions:
winlog.channel: Security
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windows-sysmon:
product: windows
service: sysmon
conditions:
winlog.channel: 'Microsoft-Windows-Sysmon/Operational'
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windows-dns-server:
product: windows
service: dns-server
conditions:
winlog.channel: 'DNS Server'
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windows-driver-framework:
product: windows
service: driver-framework
conditions:
winlog.provider_name: 'Microsoft-Windows-DriverFrameworks-UserMode/Operational'
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windows-dhcp:
product: windows
service: dhcp
conditions:
winlog.provider_name: 'Microsoft-Windows-DHCP-Server/Operational'
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defaultindex: winlogbeat-*
# Extract all field names qith yq:
# yq -r '.detection | del(.condition) | map(keys) | .[][]' $(find sigma/rules/windows -name '*.yml') | sort -u | grep -v ^EventID$ | sed 's/^\(.*\)/ \1: winlog.event_data.\1/g'
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# Keep EventID! Clean up the list afterwards!
fieldmappings:
EventID: winlog.event_id
AccessMask: winlog.event_data.AccessMask
AccountName: winlog.event_data.AccountName
AllowedToDelegateTo: winlog.event_data.AllowedToDelegateTo
AttributeLDAPDisplayName: winlog.event_data.AttributeLDAPDisplayName
AuditPolicyChanges: winlog.event_data.AuditPolicyChanges
AuthenticationPackageName: winlog.event_data.AuthenticationPackageName
CallingProcessName: winlog.event_data.CallingProcessName
CallTrace: winlog.event_data.CallTrace
Channel: winlog.channel
CommandLine: winlog.event_data.CommandLine
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ComputerName: winlog.ComputerName
CurrentDirectory: winlog.event_data.CurrentDirectory
Description: winlog.event_data.Description
DestinationHostname: winlog.event_data.DestinationHostname
DestinationIp: winlog.event_data.DestinationIp
dst_ip: winlog.event_data.DestinationIp
DestinationIsIpv6: winlog.event_data.DestinationIsIpv6
DestinationPort: winlog.event_data.DestinationPort
dst_port: winlog.event_data.DestinationPort
Details: winlog.event_data.Details
EngineVersion: winlog.event_data.EngineVersion
EventType: winlog.event_data.EventType
FailureCode: winlog.event_data.FailureCode
FileName: winlog.event_data.FileName
GrantedAccess: winlog.event_data.GrantedAccess
GroupName: winlog.event_data.GroupName
GroupSid: winlog.event_data.GroupSid
Hashes: winlog.event_data.Hashes
HiveName: winlog.event_data.HiveName
HostVersion: winlog.event_data.HostVersion
Image: winlog.event_data.Image
ImageLoaded: winlog.event_data.ImageLoaded
ImagePath: winlog.event_data.ImagePath
Imphash: winlog.event_data.Imphash
IpAddress: winlog.event_data.IpAddress
KeyLength: winlog.event_data.KeyLength
LogonProcessName: winlog.event_data.LogonProcessName
LogonType: winlog.event_data.LogonType
NewProcessName: winlog.event_data.NewProcessName
ObjectClass: winlog.event_data.ObjectClass
ObjectName: winlog.event_data.ObjectName
ObjectType: winlog.event_data.ObjectType
ObjectValueName: winlog.event_data.ObjectValueName
ParentCommandLine: winlog.event_data.ParentCommandLine
ParentProcessName: winlog.event_data.ParentProcessName
ParentImage: winlog.event_data.ParentImage
Path: winlog.event_data.Path
PipeName: winlog.event_data.PipeName
ProcessCommandLine: winlog.event_data.ProcessCommandLine
ProcessName: winlog.event_data.ProcessName
Properties: winlog.event_data.Properties
Add Winlogbeat's RuleName field to mapping When Sysmon logs a "RegistryEvent" event of ID 13, the event might contain a field named "RuleName" as shown in the following excerpt. ```xml <?xml version="1.0" encoding="utf-8" standalone="yes"?> <Events> <Event xmlns='http://schemas.microsoft.com/win/2004/08/events/event'> <System> <Provider Name='Microsoft-Windows-Sysmon' Guid='{5770385f-c22a-43e0-bf4c-06f5698ffbd9}'/> <EventID>13</EventID> <Version>2</Version> <Level>4</Level> <Task>13</Task> <Opcode>0</Opcode> <Keywords>0x8000000000000000</Keywords> <TimeCreated SystemTime='2020-03-18T03:52:07.173448000Z'/> <EventRecordID>160631</EventRecordID> <Correlation/> <Execution ProcessID='2156' ThreadID='3628'/> <Channel>Microsoft-Windows-Sysmon/Operational</Channel> <Computer>win10.sec699-40.lab</Computer> <Security UserID='S-1-5-18'/> </System> <EventData> <Data Name='RuleName'>Context,ProtectedModeExitOrMacrosUsed</Data> <Data Name='EventType'>SetValue</Data> <Data Name='UtcTime'>2020-03-18 03:52:07.129</Data> <Data Name='ProcessGuid'>{36aa6401-9acb-5e71-0000-0010e3ed6803}</Data> <Data Name='ProcessId'>5064</Data> <Data Name='Image'>C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE</Data> <Data Name='TargetObject'>HKU\S-1-5-21-1850752718-2055233276-2633568556-1126\Software\Microsoft\Office\16.0\Word\Security\Trusted Documents\TrustRecords\%USERPROFILE%/Documents/sec699.docm</Data> <Data Name='Details'>Binary Data</Data> </EventData> </Event> </Events> ``` When used in combination with Elastic's Winlogbeat, the resulting field is named `winlog.event_data.RuleName`. This commit introduces a mapping between the Sigma `RuleName` field (pre-existing in the `arcsight.yml` config) and Elastic's `winlog.event_data.RuleName`. The presence of this field could be leveraged to build Sigma rules detecting events such as the above where a malicious macro was executed.
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RuleName: winlog.event_data.RuleName
SecurityID: winlog.event_data.SecurityID
ServiceFileName: winlog.event_data.ServiceFileName
ServiceName: winlog.event_data.ServiceName
ShareName: winlog.event_data.ShareName
Signature: winlog.event_data.Signature
Source: winlog.event_data.Source
SourceImage: winlog.event_data.SourceImage
SourceIp: winlog.event_data.SourceIp
src_ip: winlog.event_data.SourceIp
SourcePort: winlog.event_data.SourcePort
src_port: winlog.event_data.SourcePort
StartModule: winlog.event_data.StartModule
Status: winlog.event_data.Status
SubjectUserName: winlog.event_data.SubjectUserName
SubjectUserSid: winlog.event_data.SubjectUserSid
TargetFilename: winlog.event_data.TargetFilename
TargetImage: winlog.event_data.TargetImage
TargetObject: winlog.event_data.TargetObject
TicketEncryptionType: winlog.event_data.TicketEncryptionType
TicketOptions: winlog.event_data.TicketOptions
User: winlog.event_data.User
WorkstationName: winlog.event_data.WorkstationName
# Channel: WLAN-Autoconfig AND EventID: 8001
AuthenticationAlgorithm: winlog.event_data.AuthenticationAlgorithm
BSSID: winlog.event_data.BSSID
BSSType: winlog.event_data.BSSType
CipherAlgorithm: winlog.event_data.CipherAlgorithm
ConnectionId: winlog.event_data.ConnectionId
ConnectionMode: winlog.event_data.ConnectionMode
InterfaceDescription: winlog.event_data.InterfaceDescription
InterfaceGuid: winlog.event_data.InterfaceGuid
OnexEnabled: winlog.event_data.OnexEnabled
PHYType: winlog.event_data.PHYType
ProfileName: winlog.event_data.ProfileName
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SSID: winlog.event_data.SSID