mirror of
https://github.com/splunk/security_content
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Bhavin Patel
68 lines
2.9 KiB
YAML
68 lines
2.9 KiB
YAML
name: Windows Modify Registry ProxyEnable
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id: b27f20bd-ef20-41d1-a1e9-25dedd5bf2f5
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version: 2
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date: '2024-05-22'
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author: Teoderick Contreras, Splunk
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status: production
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type: Anomaly
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data_source:
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- Sysmon EventID 12
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- Sysmon EventID 13
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description: The following analytic detects modifications to the Windows registry
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key "ProxyEnable" to enable proxy settings. It leverages data from the Endpoint.Registry
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datamodel, specifically monitoring changes to the "Internet Settings\ProxyEnable"
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registry path. This activity is significant as it is commonly exploited by malware
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and adversaries to establish proxy communication, potentially connecting to malicious
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Command and Control (C2) servers. If confirmed malicious, this could allow attackers
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to redirect network traffic through a proxy, facilitating unauthorized communication
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and data exfiltration, thereby compromising the security of the affected host.
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search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time)
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as lastTime from datamodel=Endpoint.Registry where Registry.registry_path = "*\\Internet
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Settings\\ProxyEnable" Registry.registry_value_data = 0x00000001 by Registry.registry_path
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Registry.registry_value_name Registry.registry_value_data Registry.process_guid
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Registry.action Registry.user Registry.dest | `drop_dm_object_name(Registry)` |
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`security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` | `windows_modify_registry_proxyenable_filter`'
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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, however is not common. Filter as needed.
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references:
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- https://malpedia.caad.fkie.fraunhofer.de/details/win.darkgate
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tags:
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analytic_story:
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- DarkGate Malware
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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 settings was modified to enable proxy on $dest$.
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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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required_fields:
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- _time
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- Registry.registry_key_name
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- Registry.registry_path
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- Registry.user
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- Registry.dest
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- Registry.registry_value_name
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- Registry.action
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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:
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https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1112/proxy_enable/proxyenable.log
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source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
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sourcetype: xmlwineventlog
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