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patel-bhavin
85 lines
3.1 KiB
YAML
85 lines
3.1 KiB
YAML
name: Windows Query Registry Reg Save
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id: cbee60c1-b776-456f-83c2-faa56bdbe6c6
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version: 1
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date: '2022-12-12'
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author: Teoderick Contreras, Splunk
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type: Hunting
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datamodel:
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- Endpoint
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description: The following analytic identifies a process execution of reg.exe with "save" parameter.
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This reg.exe parameter is commonly being abused by threat actors, adversaries and red-teamers to dump credentials or to check
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the registry modification capabilities of certain users or administrators in targeted hosts. This approach was seen in post-exploitation
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tool like winpeas where it uses "reg save" and "reg restore" to check registry modification restriction in targeted host after gaining
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access to it.
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search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time) as lastTime from datamodel=Endpoint.Processes
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where `process_reg` AND Processes.process = "* save *"
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by Processes.process_name Processes.original_file_name Processes.process Processes.process_id Processes.process_guid
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Processes.parent_process_name Processes.parent_process Processes.parent_process_guid Processes.dest Processes.user
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| `drop_dm_object_name(Processes)`
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| `security_content_ctime(firstTime)`
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| `security_content_ctime(lastTime)`
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| `windows_query_registry_reg_save_filter`'
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how_to_implement: To successfully implement this search, you need to be ingesting
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logs with the process name, parent process, and command-line executions from your
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endpoints. If you are using Sysmon, you must have at least version 6.0.4 of the
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Sysmon TA. Tune and filter known instances of wermgr.exe may be used.
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known_false_positives: network administrator can use this command tool to backup registry before updates or modifying critical registries.
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references:
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- https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/quser
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- https://github.com/carlospolop/PEASS-ng/tree/master/winPEAS
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- https://www.microsoft.com/en-us/security/blog/2022/10/14/new-prestige-ransomware-impacts-organizations-in-ukraine-and-poland/
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tags:
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analytic_story:
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- Windows Post-Exploitation
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- Prestige Ransomware
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asset_type: Endpoint
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cis20:
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- CIS 3
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- CIS 5
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- CIS 16
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confidence: 30
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context:
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- Source:Endpoint
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- Stage:Discovery
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- Stage:Recon
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dataset:
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- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/malware/winpeas/sysmon.log
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impact: 30
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kill_chain_phases:
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- Exploitation
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message: execution of process $process_name$ in $dest$
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mitre_attack_id:
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- T1012
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nist:
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- DE.CM
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observable:
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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: user
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type: User
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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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required_fields:
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- _time
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- Processes.dest
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- Processes.user
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- Processes.parent_process_name
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- Processes.parent_process
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- Processes.original_file_name
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- Processes.process_name
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- Processes.process
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- Processes.process_id
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- Processes.parent_process_path
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- Processes.process_path
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- Processes.parent_process_id
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- Processes.parent_process_guid
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- Processes.process_guid
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risk_score: 9
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security_domain: endpoint
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