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hayabusa/rules/Sigma/win_smb_file_creation_admin_shares.yml
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2021-11-14 11:00:56 +09:00

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YAML

title: SMB Create Remote File Admin Share
author: Jose Rodriguez (@Cyb3rPandaH), OTR (Open Threat Research)
date: 2020/08/06
description: Look for non-system accounts SMB accessing a file with write (0x2) access
mask via administrative share (i.e C$).
detection:
SELECTION_1:
EventID: 5145
SELECTION_2:
ShareName: '*C$'
SELECTION_3:
AccessMask: '0x2'
SELECTION_4:
SubjectUserName: '*$'
condition: ((SELECTION_1 and SELECTION_2 and SELECTION_3) and not (SELECTION_4))
falsepositives:
- Unknown
id: b210394c-ba12-4f89-9117-44a2464b9511
level: high
logsource:
product: windows
service: security
references:
- https://github.com/OTRF/ThreatHunter-Playbook/blob/master/playbooks/WIN-201012004336.yaml
- https://securitydatasets.com/notebooks/small/windows/08_lateral_movement/SDWIN-200806015757.html?highlight=create%20file
status: experimental
tags:
- attack.lateral_movement
- attack.t1021.002
yml_filename: win_smb_file_creation_admin_shares.yml
yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/builtin