Josh
ad84d82baf
update: Persistence and Execution at Scale via GPO Scheduled Task - Increase coverage by adding selection for EID 5136 --------- Co-authored-by: nasbench <8741929+nasbench@users.noreply.github.com>
40 lines
1.5 KiB
YAML
40 lines
1.5 KiB
YAML
title: Persistence and Execution at Scale via GPO Scheduled Task
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id: a8f29a7b-b137-4446-80a0-b804272f3da2
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status: test
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description: Detect lateral movement using GPO scheduled task, usually used to deploy ransomware at scale
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references:
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- https://twitter.com/menasec1/status/1106899890377052160
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- https://www.secureworks.com/blog/ransomware-as-a-distraction
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- https://www.elastic.co/guide/en/security/7.17/prebuilt-rule-0-16-1-scheduled-task-execution-at-scale-via-gpo.html
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author: Samir Bousseaden
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date: 2019-04-03
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modified: 2024-09-04
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tags:
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- attack.persistence
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- attack.lateral-movement
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- attack.t1053.005
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logsource:
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product: windows
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service: security
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definition: 'The advanced audit policy setting "Object Access > Audit Detailed File Share" must be configured for Success/Failure'
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detection:
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selection_5136:
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EventID: 5136
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AttributeLDAPDisplayName:
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- 'gPCMachineExtensionNames'
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- 'gPCUserExtensionNames'
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AttributeValue|contains:
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- 'CAB54552-DEEA-4691-817E-ED4A4D1AFC72'
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- 'AADCED64-746C-4633-A97C-D61349046527'
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selection_5145:
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EventID: 5145
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ShareName|endswith: '\SYSVOL' # looking for the string \\*\SYSVOL
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RelativeTargetName|endswith: 'ScheduledTasks.xml'
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AccessList|contains:
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- 'WriteData'
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- '%%4417'
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condition: 1 of selection_*
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falsepositives:
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- If the source IP is not localhost then it's super suspicious, better to monitor both local and remote changes to GPO scheduled tasks.
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level: high
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