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P4T12ICK
85 lines
3.0 KiB
YAML
85 lines
3.0 KiB
YAML
name: Windows Execute Arbitrary Commands with MSDT
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id: e1d5145f-38fe-42b9-a5d5-457796715f97
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version: 3
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date: '2022-06-29'
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author: Michael Haag, Teoderick Contreras, Splunk
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status: production
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type: TTP
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description: The following analytic identifies a recently disclosed arbitraty command
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execution using Windows msdt.exe - a Diagnostics Troubleshooting Wizard. The sample
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identified will use the ms-msdt:/ protocol handler to load msdt.exe to retrieve
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a remote payload. During triage, review file modifications for html. Identify parallel
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process execution that may be related, including an Office Product.
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data_source:
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- Sysmon Event ID 1
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search:
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selection1:
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CommandLine:
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- '*msdt*'
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- '*ms-msdt:*'
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- '*ms-msdt:/id*'
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- '*ms-msdt:-id*'
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- '*/id*'
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Image|endswith: msdt.exe
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selection2:
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CommandLine: '*IT_BrowseForFile='
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selection3:
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CommandLine: '*IT_RebrowseForFile='
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condition: selection1 and selection2 or selection3
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how_to_implement: To successfully implement this search you need to be ingesting information
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on process that include the name of the process responsible for the changes from
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your endpoints into the `Endpoint` datamodel in the `Processes` node. In addition,
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confirm the latest CIM App 4.20 or higher is installed and the latest TA for the
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endpoint product.
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known_false_positives: False positives may be present, filter as needed. Added .xml
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to potentially capture any answer file usage. Remove as needed.
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references:
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- https://isc.sans.edu/diary/rss/28694
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- https://doublepulsar.com/follina-a-microsoft-office-code-execution-vulnerability-1a47fce5629e
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- https://twitter.com/nao_sec/status/1530196847679401984?s=20&t=ZiXYI4dQuA-0_dzQzSUb3A
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- https://app.any.run/tasks/713f05d2-fe78-4b9d-a744-f7c133e3fafb/
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- https://www.virustotal.com/gui/file/4a24048f81afbe9fb62e7a6a49adbd1faf41f266b5f9feecdceb567aec096784/detection
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- https://strontic.github.io/xcyclopedia/library/msdt.exe-152D4C9F63EFB332CCB134C6953C0104.html
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tags:
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analytic_story:
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- Microsoft Support Diagnostic Tool Vulnerability CVE-2022-30190
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asset_type: Endpoint
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confidence: 100
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cve:
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- CVE-2022-30190
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impact: 100
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message: A parent process $parent_process_name$ has spawned a child process $process_name$
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on host $dest$ possibly indicative of indirect command execution.
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mitre_attack_id:
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- T1218
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observable:
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- name: user
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type: User
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role:
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- Victim
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- name: dest
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type: Hostname
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role:
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- Victim
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- name: parent_process_name
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type: Process
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role:
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- Parent Process
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- name: process_name
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type: Process
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role:
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- Child Process
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product:
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- Splunk Enterprise
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- Splunk Enterprise Security
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- Splunk Cloud
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risk_score: 100
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security_domain: endpoint
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tests:
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- name: True Positive Test
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attack_data:
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- data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1566.001/macro/msdt.log
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source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
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sourcetype: xmlwineventlog
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update_timestamp: true
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