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Create AdminSDHolder_Modifications.yaml #3808

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Jan 19, 2022
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Create AdminSDHolder_Modifications.yaml #3808

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Create AdminSDHolder_Modifications.yaml
vpaschalidis Dec 29, 2021
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Update AdminSDHolder_Modifications.yaml
vpaschalidis Jan 18, 2022
3ce3906
Update AdminSDHolder_Modifications.yaml
vpaschalidis Jan 19, 2022
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36 changes: 36 additions & 0 deletions Detections/AdminSDHolder_Modifications.yaml
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id: a3b0d639-6e85-4bd0-aa71-59a114f17234
name: AdminSDHolder Modifications
description: |
'This query detects modification in the AdminSDHolder in the Active Directory which could indicate an attempt for persistence.
AdminSDHolder Modification is a persistence technique in which an attacker abuses the SDProp process in Active Directory to establish a persistent backdoor to Active Directory.
This query searches for the event id 5136 where the Object DN is AdminSDHolder.
Ref: https://attack.stealthbits.com/adminsdholder-modification-ad-persistence'
severity: High
requiredDataConnectors:
- connectorId: SecurityEvents
dataTypes:
- SecurityEvent
queryFrequency: 1h
queryPeriod: 1h
triggerOperator: gt
triggerThreshold: 0
tactics:
- Persistence
relevantTechniques:
- T1078
query: |
SecurityEvent
| where EventID == 5136 and EventData contains "<Data Name=\"ObjectDN\">CN=AdminSDHolder,CN=System"
| parse EventData with * 'ObjectDN">' ObjectDN "<" *
| summarize StartTime = min(TimeGenerated), EndTime = max(TimeGenerated) by Computer, SubjectAccount, SubjectUserSid, SubjectLogonId, ObjectDN
entityMappings:
- entityType: Account
fieldMappings:
- identifier: FullName
columnName: SubjectAccount
- entityType: Host
fieldMappings:
- identifier: FullName
columnName: Computer
version: 1.0.0
kind: Scheduled