SigmaHQ/rules/windows/builtin/win_GPO_scheduledtasks.yml

title: Persistence and Execution at Scale via GPO Scheduled Task
id: a8f29a7b-b137-4446-80a0-b804272f3da2
description: Detect lateral movement using GPO scheduled task, usually used to deploy ransomware at scale
author: Samir Bousseaden
date: 2019/04/03
references:
    - https://twitter.com/menasec1/status/1106899890377052160
    - https://www.secureworks.com/blog/ransomware-as-a-distraction
tags:
    - attack.persistence
    - attack.lateral_movement
    - attack.t1053          # an old one
    - attack.t1053.005
logsource:
    product: windows
    service: security
    definition: 'The advanced audit policy setting "Object Access > Audit Detailed File Share" must be configured for Success/Failure'
detection:
    selection:
        EventID: 5145
        ShareName: \\*\SYSVOL
        RelativeTargetName|endswith: 'ScheduledTasks.xml'
        Accesses|contains: 'WriteData'
    condition: selection
falsepositives:
    - if the source IP is not localhost then it's super suspicious, better to monitor both local and remote changes to GPO scheduledtasks
level: high
fix: fixed casing and long rule titles 2020-01-30 16:26:09 +00:00			`title: Persistence and Execution at Scale via GPO Scheduled Task`
Added UUIDs to rules 2019-11-12 22:12:27 +00:00			`id: a8f29a7b-b137-4446-80a0-b804272f3da2`
Fix typo 2020-04-13 16:09:00 +00:00			`description: Detect lateral movement using GPO scheduled task, usually used to deploy ransomware at scale`
Create win_GPO_scheduledtasks.yml 2019-04-03 13:36:24 +00:00			`author: Samir Bousseaden`
fix: fixed missing date fields in remaining files 2020-01-30 15:07:37 +00:00			`date: 2019/04/03`
Create win_GPO_scheduledtasks.yml 2019-04-03 13:36:24 +00:00			`references:`
			`- https://twitter.com/menasec1/status/1106899890377052160`
Add additional reference 2020-04-13 16:09:36 +00:00			`- https://www.secureworks.com/blog/ransomware-as-a-distraction`
Create win_GPO_scheduledtasks.yml 2019-04-03 13:36:24 +00:00			`tags:`
			`- attack.persistence`
			`- attack.lateral_movement`
att&ck tags review: windows/builtin, windows/driver_load, windows/file_event, windows/image_load, windows/other 2020-08-24 23:09:17 +00:00			`- attack.t1053 # an old one`
Initial round of subtechnique updates 2020-06-16 20:46:08 +00:00			`- attack.t1053.005`
Create win_GPO_scheduledtasks.yml 2019-04-03 13:36:24 +00:00			`logsource:`
			`product: windows`
			`service: security`
Update additional rules to have correct logsource attributes 2020-07-13 21:02:17 +00:00			`definition: 'The advanced audit policy setting "Object Access > Audit Detailed File Share" must be configured for Success/Failure'`
Create win_GPO_scheduledtasks.yml 2019-04-03 13:36:24 +00:00			`detection:`
			`selection:`
			`EventID: 5145`
			`ShareName: \\*\SYSVOL`
Update win_GPO_scheduledtasks.yml Getting rid of '*' use 2020-10-15 18:07:16 +00:00			`RelativeTargetName\|endswith: 'ScheduledTasks.xml'`
			`Accesses\|contains: 'WriteData'`
Create win_GPO_scheduledtasks.yml 2019-04-03 13:36:24 +00:00			`condition: selection`
fix: fixed missing date fields in remaining files 2020-01-30 15:07:37 +00:00			`falsepositives:`
Create win_GPO_scheduledtasks.yml 2019-04-03 13:36:24 +00:00			`- if the source IP is not localhost then it's super suspicious, better to monitor both local and remote changes to GPO scheduledtasks`
			`level: high`