COM Registry Key Modified to Point to File in Color Profile Folder

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Id	ed8c9153-6f7a-4602-97b4-48c336b299e1
Rulename	COM Registry Key Modified to Point to File in Color Profile Folder
Description	This query looks for changes to COM registry keys to point to files in C:\Windows\System32\spool\drivers\color\. This can be used to enable COM hijacking for persistence. Ref: https://www.microsoft.com/security/blog/2022/07/27/untangling-knotweed-european-private-sector-offensive-actor-using-0-day-exploits/
Severity	Medium
Tactics	Persistence
Techniques	T1574
Required data connectors	MicrosoftThreatProtection SecurityEvents
Kind	Scheduled
Query frequency	1d
Query period	1d
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Detections/MultipleDataSources/COMRegistryKeyModifiedtoPointtoFileinColorDrivers.yaml
Version	1.1.1
Arm template	ed8c9153-6f7a-4602-97b4-48c336b299e1.json

KQL

let guids = dynamic(["{ddc05a5a-351a-4e06-8eaf-54ec1bc2dcea}","{1f486a52-3cb1-48fd-8f50-b8dc300d9f9d}","{4590f811-1d3a-11d0-891f-00aa004b2e24}", "{4de225bf-cf59-4cfc-85f7-68b90f185355}", "{F56F6FDD-AA9D-4618-A949-C1B91AF43B1A}"]);
  let mde_data = DeviceRegistryEvents
  | where ActionType =~ "RegistryValueSet"
  | where RegistryKey contains "HKEY_LOCAL_MACHINE\\SOFTWARE\\Classes\\CLSID"
  | where RegistryKey has_any (guids)
  | where RegistryValueData has "System32\\spool\\drivers\\color";
  let event_data = SecurityEvent
  | where EventID == 4657
  | where ObjectName contains "HKEY_LOCAL_MACHINE\\SOFTWARE\\Classes\\CLSID"
  | where ObjectName has_any (guids)
  | where NewValue has "System32\\spool\\drivers\\color"
  | extend RegistryKey = ObjectName, RegistryValueData = NewValue, DeviceName=Computer, InitiatingProcessFileName = Process, InitiatingProcessAccountName=SubjectUserName, InitiatingProcessAccountDomain = SubjectDomainName;
  union mde_data, event_data
  | extend HostName = tostring(split(DeviceName, ".")[0]), DomainIndex = toint(indexof(DeviceName, '.'))
  | extend HostNameDomain = iff(DomainIndex != -1, substring(DeviceName, DomainIndex + 1), DeviceName)

YAML

description: |
  'This query looks for changes to COM registry keys to point to files in C:\Windows\System32\spool\drivers\color\.
    This can be used to enable COM hijacking for persistence.
    Ref: https://www.microsoft.com/security/blog/2022/07/27/untangling-knotweed-european-private-sector-offensive-actor-using-0-day-exploits/'  
entityMappings:
- fieldMappings:
  - columnName: RegistryKey
    identifier: Key
  entityType: RegistryKey
- fieldMappings:
  - columnName: DeviceName
    identifier: FullName
  - columnName: HostName
    identifier: HostName
  - columnName: HostNameDomain
    identifier: NTDomain
  entityType: Host
- fieldMappings:
  - columnName: InitiatingProcessFileName
    identifier: ProcessId
  entityType: Process
- fieldMappings:
  - columnName: InitiatingProcessAccountName
    identifier: Name
  - columnName: InitiatingProcessAccountName
    identifier: NTDomain
  entityType: Account
query: |
  let guids = dynamic(["{ddc05a5a-351a-4e06-8eaf-54ec1bc2dcea}","{1f486a52-3cb1-48fd-8f50-b8dc300d9f9d}","{4590f811-1d3a-11d0-891f-00aa004b2e24}", "{4de225bf-cf59-4cfc-85f7-68b90f185355}", "{F56F6FDD-AA9D-4618-A949-C1B91AF43B1A}"]);
    let mde_data = DeviceRegistryEvents
    | where ActionType =~ "RegistryValueSet"
    | where RegistryKey contains "HKEY_LOCAL_MACHINE\\SOFTWARE\\Classes\\CLSID"
    | where RegistryKey has_any (guids)
    | where RegistryValueData has "System32\\spool\\drivers\\color";
    let event_data = SecurityEvent
    | where EventID == 4657
    | where ObjectName contains "HKEY_LOCAL_MACHINE\\SOFTWARE\\Classes\\CLSID"
    | where ObjectName has_any (guids)
    | where NewValue has "System32\\spool\\drivers\\color"
    | extend RegistryKey = ObjectName, RegistryValueData = NewValue, DeviceName=Computer, InitiatingProcessFileName = Process, InitiatingProcessAccountName=SubjectUserName, InitiatingProcessAccountDomain = SubjectDomainName;
    union mde_data, event_data
    | extend HostName = tostring(split(DeviceName, ".")[0]), DomainIndex = toint(indexof(DeviceName, '.'))
    | extend HostNameDomain = iff(DomainIndex != -1, substring(DeviceName, DomainIndex + 1), DeviceName)  
tactics:
- Persistence
severity: Medium
triggerThreshold: 0
queryFrequency: 1d
queryPeriod: 1d
relevantTechniques:
- T1574
tags:
- KNOTWEED
id: ed8c9153-6f7a-4602-97b4-48c336b299e1
name: COM Registry Key Modified to Point to File in Color Profile Folder
kind: Scheduled
triggerOperator: gt
version: 1.1.1
metadata:
  author:
    name: Microsoft Security Research
  source:
    kind: Community
  categories:
    domains:
    - Security - Others
  support:
    tier: Community
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/MultipleDataSources/COMRegistryKeyModifiedtoPointtoFileinColorDrivers.yaml
requiredDataConnectors:
- dataTypes:
  - DeviceRegistryEvents
  connectorId: MicrosoftThreatProtection
- dataTypes:
  - SecurityEvents
  connectorId: SecurityEvents

ARM