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Sigma detection rules

1 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

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medium
Powershell Local Email Collection
Adversaries may target user email on local systems to collect sensitive information. Files containing email data can be acquired from a users local system, such as Outlook storage or cache files.
status test author frack113 id 2837e152-93c8-43d2-85ba-c3cd3c2ae614
view Sigma YAML
title: Powershell Local Email Collection
id: 2837e152-93c8-43d2-85ba-c3cd3c2ae614
status: test
description: |
    Adversaries may target user email on local systems to collect sensitive information.
    Files containing email data can be acquired from a users local system, such as Outlook storage or cache files.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1114.001/T1114.001.md
author: frack113
date: 2021-07-21
modified: 2022-12-25
tags:
    - attack.collection
    - attack.t1114.001
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection:
        ScriptBlockText|contains:
            - 'Get-Inbox.ps1'
            - 'Microsoft.Office.Interop.Outlook'
            - 'Microsoft.Office.Interop.Outlook.olDefaultFolders'
            - '-comobject outlook.application'
    condition: selection
falsepositives:
    - Unknown
level: medium
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