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https://github.com/splunk/security_content
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P4T12ICK
55 lines
2.0 KiB
YAML
55 lines
2.0 KiB
YAML
name: Windows Modify Registry DisAllow Windows App
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id: 4bc788d3-c83a-48c5-a4e2-e0c6dba57889
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version: 1
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date: '2022-06-22'
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author: Teoderick Contreras, Splunk
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status: production
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type: TTP
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description: The following analytic identifies modification in the Windows registry
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to prevent user running specific computer programs that could aid them in manually
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removing malware or detecting it using security products. This technique was recently
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identified in Azorult malware where it uses this registry value to prevent several
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AV products to execute on the compromised host machine.
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data_source:
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- Sysmon Event ID 13
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search:
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selection1:
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Details: '0x00000001'
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TargetObject: '*\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer\\DisallowRun*'
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condition: selection1
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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 `Registry` node. Also make sure
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that this registry was included in your config files ex. sysmon config to be monitored.
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known_false_positives: Administrators may enable or disable this feature that may
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cause some false positive. Filter as needed.
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references:
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- https://app.any.run/tasks/a6f2ffe2-e6e2-4396-ae2e-04ea0143f2d8/
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tags:
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analytic_story:
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- Azorult
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asset_type: Endpoint
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confidence: 70
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impact: 70
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message: The registry for DisallowRun settings was modified to enable in $dest$.
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mitre_attack_id:
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- T1112
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observable:
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- name: dest
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type: Endpoint
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role:
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- Victim
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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: 49
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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/malware/azorult/sysmon.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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