Tanaka Zakku
56 lines
1.6 KiB
YAML
56 lines
1.6 KiB
YAML
title: Suspicious Access to Sensitive File Extensions
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author: Samir Bousseaden
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date: 2019/04/03
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description: Detects known sensitive file extensions accessed on a network share
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detection:
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SELECTION_1:
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EventID: 5145
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SELECTION_10:
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RelativeTargetName: '*.dmp'
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SELECTION_11:
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RelativeTargetName: '*.kirbi'
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SELECTION_12:
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RelativeTargetName: '*\groups.xml'
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SELECTION_13:
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RelativeTargetName: '*.rdp'
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SELECTION_2:
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RelativeTargetName: '*.pst'
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SELECTION_3:
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RelativeTargetName: '*.ost'
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SELECTION_4:
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RelativeTargetName: '*.msg'
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SELECTION_5:
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RelativeTargetName: '*.nst'
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SELECTION_6:
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RelativeTargetName: '*.oab'
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SELECTION_7:
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RelativeTargetName: '*.edb'
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SELECTION_8:
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RelativeTargetName: '*.nsf'
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SELECTION_9:
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RelativeTargetName: '*.bak'
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condition: (SELECTION_1 and (SELECTION_2 or SELECTION_3 or SELECTION_4 or SELECTION_5
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or SELECTION_6 or SELECTION_7 or SELECTION_8 or SELECTION_9 or SELECTION_10
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or SELECTION_11 or SELECTION_12 or SELECTION_13))
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falsepositives:
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- Help Desk operator doing backup or re-imaging end user machine or pentest or backup
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software
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- Users working with these data types or exchanging message files
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fields:
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- ComputerName
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- SubjectDomainName
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- SubjectUserName
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- RelativeTargetName
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id: 91c945bc-2ad1-4799-a591-4d00198a1215
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level: medium
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logsource:
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product: windows
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service: security
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modified: 2021/08/09
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tags:
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- attack.collection
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- attack.t1039
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yml_filename: win_susp_raccess_sensitive_fext.yml
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yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/builtin
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