Exploitation Attempt Of CVE-2020-1472 - Execution of ZeroLogon PoC

Status: test
Severity: high
Log source: category process_creation, product windows
Author: @Kostastsale, TheDFIRReport
Source: github.com/SigmaHQ/sigma

Detects the execution of the commonly used ZeroLogon PoC executable.

MITRE ATT&CK coverage

Tactic	Techniques
Lateral Movement	`T1210` Exploitation of Remote Services

Telemetry coverage

Provider	Record / event type
Sysmon	Event ID 1: Process creation
Security-Auditing	Event ID 4688: A new process has been created.

Rule body

title: Exploitation Attempt Of CVE-2020-1472 - Execution of ZeroLogon PoC
id: dcc6a01e-9471-44a0-a699-71ea96f8ed8b
status: test
description: Detects the execution of the commonly used ZeroLogon PoC executable.
references:
    - https://thedfirreport.com/2021/11/01/from-zero-to-domain-admin/
    - https://thedfirreport.com/2022/02/21/qbot-and-zerologon-lead-to-full-domain-compromise/
author: '@Kostastsale, TheDFIRReport'
date: 2022-02-12
tags:
    - attack.execution
    - attack.lateral-movement
    - attack.t1210
    - cve.2020-1472
    - detection.emerging-threats
logsource:
    product: windows
    category: process_creation
detection:
    selection_main:
        ParentImage|endswith: '\cmd.exe'
        Image|endswith:
            - '\cool.exe'
            - '\zero.exe'
        CommandLine|contains|all:
            - 'Administrator'
            - '-c'
    selection_payloads_1:
        CommandLine|contains|all:
            - 'taskkill'
            - '/f'
            - '/im'
    selection_payloads_2:
        CommandLine|contains: 'powershell'
    condition: selection_main and 1 of selection_payloads_*
falsepositives:
    - Unknown
level: high

Stages and Predicates

Stage 0: `condition`

selection_main and 1 of selection_payloads_*

Stage 1: `selection_main`

selection_main:
    ParentImage|endswith: '\cmd.exe'
    Image|endswith:
        - '\cool.exe'
        - '\zero.exe'
    CommandLine|contains|all:
        - 'Administrator'
        - '-c'

Stage 2: `selection_payloads_1`

selection_payloads_1:
    CommandLine|contains|all:
        - 'taskkill'
        - '/f'
        - '/im'

Stage 3: `selection_payloads_2`

selection_payloads_2:
    CommandLine|contains: 'powershell'

Indicators

These rows show field, operator, and value matches.

Field	Kind	Values	Search
`CommandLine`	match	`-c` corpus 7 (sigma 6, splunk 1) `/f` corpus 7 (sigma 5, splunk 1, kusto 1) `/im` `Administrator` corpus 2 (sigma 2) `powershell` corpus 25 (sigma 24, chronicle 1) `taskkill` corpus 3 (sigma 2, splunk 1)	`field:"CommandLine" kind:match`
`Image`	ends_with	`\cool.exe` `\zero.exe`	`field:"Image" kind:ends_with`
`ParentImage`	ends_with	`\cmd.exe` corpus 20 (sigma 20)	`field:"ParentImage" kind:ends_with value:"\cmd.exe"`

Exploitation Attempt Of CVE-2020-1472 - Execution of ZeroLogon PoC

MITRE ATT&CK coverage

Telemetry coverage

Rule body

Stages and Predicates

Stage 0: condition

Stage 1: selection_main

Stage 2: selection_payloads_1

Stage 3: selection_payloads_2

Indicators

Stage 0: `condition`

Stage 1: `selection_main`

Stage 2: `selection_payloads_1`

Stage 3: `selection_payloads_2`