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Sigma detection rules

3 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.

Detection rules

3 shown of 3
medium
Device Installation Blocked
Detects an installation of a device that is forbidden by the system policy
status test author frack113 id c9eb55c3-b468-40ab-9089-db2862e42137
view Sigma YAML
title: Device Installation Blocked
id: c9eb55c3-b468-40ab-9089-db2862e42137
status: test
description: Detects an installation of a device that is forbidden by the system policy
references:
    - https://github.com/Yamato-Security/EnableWindowsLogSettings/blob/7f6d755d45ac7cc9fc35b0cbf498e6aa4ef19def/ConfiguringSecurityLogAuditPolicies.md
    - https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-10/security/threat-protection/auditing/event-6423
author: frack113
date: 2022-10-14
tags:
    - attack.initial-access
    - attack.t1200
logsource:
    service: security
    product: windows
detection:
    selection:
        EventID: 6423
    condition: selection
falsepositives:
    - Unknown
level: medium
low
External Disk Drive Or USB Storage Device Was Recognized By The System
Detects external disk drives or plugged-in USB devices.
status test author Keith Wright id f69a87ea-955e-4fb4-adb2-bb9fd6685632
view Sigma YAML
title: External Disk Drive Or USB Storage Device Was Recognized By The System
id: f69a87ea-955e-4fb4-adb2-bb9fd6685632
status: test
description: Detects external disk drives or plugged-in USB devices.
references:
    - https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-10/security/threat-protection/auditing/event-6416
author: Keith Wright
date: 2019-11-20
modified: 2024-02-09
tags:
    - attack.t1091
    - attack.t1200
    - attack.lateral-movement
    - attack.initial-access
logsource:
    product: windows
    service: security
detection:
    selection_eid:
        EventID: 6416
    selection_field:
        - ClassName: 'DiskDrive'
        - DeviceDescription: 'USB Mass Storage Device'
    condition: all of selection_*
falsepositives:
    - Likely
level: low
low
USB Device Plugged
Detects plugged/unplugged USB devices
status test author Florian Roth (Nextron Systems) id 1a4bd6e3-4c6e-405d-a9a3-53a116e341d4
view Sigma YAML
title: USB Device Plugged
id: 1a4bd6e3-4c6e-405d-a9a3-53a116e341d4
status: test
description: Detects plugged/unplugged USB devices
references:
    - https://df-stream.com/2014/01/the-windows-7-event-log-and-usb-device/
    - https://www.techrepublic.com/article/how-to-track-down-usb-flash-drive-usage-in-windows-10s-event-viewer/
author: Florian Roth (Nextron Systems)
date: 2017-11-09
modified: 2021-11-30
tags:
    - attack.initial-access
    - attack.t1200
logsource:
    product: windows
    service: driver-framework
    definition: 'Requires enabling and collection of the Microsoft-Windows-DriverFrameworks-UserMode/Operational eventlog'
detection:
    selection:
        EventID:
            - 2003  # Loading drivers
            - 2100  # Pnp or power management
            - 2102  # Pnp or power management
    condition: selection
falsepositives:
    - Legitimate administrative activity
level: low
Showing 1-3 of 3
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