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Sigma rules for CVE-2022-50789

2 rules · scoped to cve · back to CVE-2022-50789

Direct rules mention this entity in their title or description. Related rules cover the techniques this entity is known to use.

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Detection rules

2 of 2

direct high

First Time Seen Remote Named Pipe - Zeek

This detection excludes known namped pipes accessible remotely and notify on newly observed ones, may help to detect lateral movement and remote exec using named pipes

status test author Samir Bousseaden, @neu5ron, Tim Shelton id 021310d9-30a6-480a-84b7-eaa69aeb92bb license Sigma · DRL-1.1

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title: First Time Seen Remote Named Pipe - Zeek
id: 021310d9-30a6-480a-84b7-eaa69aeb92bb
related:
    - id: 52d8b0c6-53d6-439a-9e41-52ad442ad9ad
      type: derived
status: test
description: This detection excludes known namped pipes accessible remotely and notify on newly observed ones, may help to detect lateral movement and remote exec using named pipes
references:
    - https://twitter.com/menasec1/status/1104489274387451904
author: Samir Bousseaden, @neu5ron, Tim Shelton
date: 2020-04-02
modified: 2022-12-27
tags:
    - attack.lateral-movement
    - attack.t1021.002
logsource:
    product: zeek
    service: smb_files
detection:
    selection:
        path: '\\\\\*\\IPC$' # Looking for the string \\*\IPC$
    filter_keywords:
        - 'samr'
        - 'lsarpc'
        - 'winreg'
        - 'netlogon'
        - 'srvsvc'
        - 'protected_storage'
        - 'wkssvc'
        - 'browser'
        - 'netdfs'
        - 'svcctl'
        - 'spoolss'
        - 'ntsvcs'
        - 'LSM_API_service'
        - 'HydraLsPipe'
        - 'TermSrv_API_service'
        - 'MsFteWds'
    condition: selection and not 1 of filter_*
falsepositives:
    - Update the excluded named pipe to filter out any newly observed legit named pipe
level: high

direct high

First Time Seen Remote Named Pipe

This detection excludes known namped pipes accessible remotely and notify on newly observed ones, may help to detect lateral movement and remote exec using named pipes

status test author Samir Bousseaden id 52d8b0c6-53d6-439a-9e41-52ad442ad9ad license Sigma · DRL-1.1

view Sigma YAML

title: First Time Seen Remote Named Pipe
id: 52d8b0c6-53d6-439a-9e41-52ad442ad9ad
status: test
description: This detection excludes known namped pipes accessible remotely and notify on newly observed ones, may help to detect lateral movement and remote exec using named pipes
references:
    - https://twitter.com/menasec1/status/1104489274387451904
author: Samir Bousseaden
date: 2019-04-03
modified: 2023-03-14
tags:
    - attack.lateral-movement
    - attack.t1021.002
logsource:
    product: windows
    service: security
    definition: 'The advanced audit policy setting "Object Access > Audit Detailed File Share" must be configured for Success/Failure'
detection:
    selection1:
        EventID: 5145
        ShareName: '\\\\\*\\IPC$' # looking for the string \\*\IPC$
    false_positives:
        RelativeTargetName:
            - 'atsvc'
            - 'samr'
            - 'lsarpc'
            - 'lsass'
            - 'winreg'
            - 'netlogon'
            - 'srvsvc'
            - 'protected_storage'
            - 'wkssvc'
            - 'browser'
            - 'netdfs'
            - 'svcctl'
            - 'spoolss'
            - 'ntsvcs'
            - 'LSM_API_service'
            - 'HydraLsPipe'
            - 'TermSrv_API_service'
            - 'MsFteWds'
            - 'sql\query'
            - 'eventlog'
    condition: selection1 and not false_positives
falsepositives:
    - Update the excluded named pipe to filter out any newly observed legit named pipe
level: high

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