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Sigma detection rules

4 rules indexed · SIEM-agnostic detection content
Sigma is the open generic signature format for SIEM systems. Each rule below converts to native syntax for Splunk, Elastic, Sentinel, and other SIEMs. Expand any rule to see its raw YAML.
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Detection rules

4 shown of 4
medium
Automated Collection Command PowerShell
Once established within a system or network, an adversary may use automated techniques for collecting internal data.
status test author frack113 id c1dda054-d638-4c16-afc8-53e007f3fbc5
view Sigma YAML 
title: Automated Collection Command PowerShell
id: c1dda054-d638-4c16-afc8-53e007f3fbc5
status: test
description: Once established within a system or network, an adversary may use automated techniques for collecting internal data.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1119/T1119.md
author: frack113
date: 2021-07-28
modified: 2022-12-25
tags:
    - attack.collection
    - attack.t1119
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection_ext:
        ScriptBlockText|contains:
            - '.doc'
            - '.docx'
            - '.xls'
            - '.xlsx'
            - '.ppt'
            - '.pptx'
            - '.rtf'
            - '.pdf'
            - '.txt'
    selection_cmd:
        ScriptBlockText|contains|all:
            - 'Get-ChildItem'
            - ' -Recurse '
            - ' -Include '
    condition: all of selection*
falsepositives:
    - Unknown
level: medium
medium
Automated Collection Command Prompt
Once established within a system or network, an adversary may use automated techniques for collecting internal data.
status test author frack113 id f576a613-2392-4067-9d1a-9345fb58d8d1
view Sigma YAML 
title: Automated Collection Command Prompt
id: f576a613-2392-4067-9d1a-9345fb58d8d1
status: test
description: Once established within a system or network, an adversary may use automated techniques for collecting internal data.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1119/T1119.md
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1552.001/T1552.001.md
author: frack113
date: 2021-07-28
modified: 2022-11-11
tags:
    - attack.collection
    - attack.t1119
    - attack.credential-access
    - attack.t1552.001
logsource:
    category: process_creation
    product: windows
detection:
    selection_ext:
        CommandLine|contains:
            - '.doc'
            - '.docx'
            - '.xls'
            - '.xlsx'
            - '.ppt'
            - '.pptx'
            - '.rtf'
            - '.pdf'
            - '.txt'
    selection_other_dir:
        CommandLine|contains|all:
            - 'dir '
            - ' /b '
            - ' /s '
    selection_other_findstr:
        OriginalFileName: 'FINDSTR.EXE'
        CommandLine|contains:
            - ' /e '
            - ' /si '
    condition: selection_ext and 1 of selection_other_*
falsepositives:
    - Unknown
level: medium
medium
Recon Information for Export with Command Prompt
Once established within a system or network, an adversary may use automated techniques for collecting internal data.
status test author frack113 id aa2efee7-34dd-446e-8a37-40790a66efd7
view Sigma YAML 
title: Recon Information for Export with Command Prompt
id: aa2efee7-34dd-446e-8a37-40790a66efd7
related:
    - id: 8e0bb260-d4b2-4fff-bb8d-3f82118e6892
      type: similar
status: test
description: Once established within a system or network, an adversary may use automated techniques for collecting internal data.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1119/T1119.md
author: frack113
date: 2021-07-30
modified: 2022-09-13
tags:
    - attack.collection
    - attack.t1119
logsource:
    product: windows
    category: process_creation
detection:
    selection_image:
        - Image|endswith:
              - '\tree.com'
              - '\WMIC.exe'
              - '\doskey.exe'
              - '\sc.exe'
        - OriginalFileName:
              - 'wmic.exe'
              - 'DOSKEY.EXE'
              - 'sc.exe'
    selection_redirect:
        ParentCommandLine|contains:
            - ' > %TEMP%\'
            - ' > %TMP%\'
    condition: all of selection*
falsepositives:
    - Unknown
level: medium
medium
Recon Information for Export with PowerShell
Once established within a system or network, an adversary may use automated techniques for collecting internal data
status test author frack113 id a9723fcc-881c-424c-8709-fd61442ab3c3
view Sigma YAML 
title: Recon Information for Export with PowerShell
id: a9723fcc-881c-424c-8709-fd61442ab3c3
status: test
description: Once established within a system or network, an adversary may use automated techniques for collecting internal data
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1119/T1119.md
author: frack113
date: 2021-07-30
modified: 2022-12-25
tags:
    - attack.collection
    - attack.t1119
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection_action:
        ScriptBlockText|contains:
            - 'Get-Service '
            - 'Get-ChildItem '
            - 'Get-Process '
    selection_redirect:
        ScriptBlockText|contains: '> $env:TEMP\'
    condition: all of selection*
falsepositives:
    - Unknown
level: medium
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