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tccontre
73 lines
2.7 KiB
YAML
73 lines
2.7 KiB
YAML
name: Linux Disable Services
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id: f2e08a38-6689-4df4-ad8c-b51c16262316
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version: 1
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date: '2022-04-22'
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author: Teoderick Contreras, Splunk
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type: TTP
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datamodel:
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- Endpoint
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description: The following analytic is to detect events that attempts to disable a service.
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This is typically identified in parallel with other instances of service enumeration of
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attempts to stop a service and then delete it. Adversaries utilize this technique like industroyer2
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malware to terminate security services or other related services to continue there objective as a destructive payload.
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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 Processes.process_name IN ("systemctl", "service", "svcadm") Processes.process = "* disable*"
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by Processes.parent_process_name Processes.process_name Processes.process Processes.process_id Processes.parent_process_id Processes.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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| `linux_disable_services_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 can use the Add-on for Linux Sysmon from
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Splunkbase.
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known_false_positives: Administrator or network operator can use this application
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for automation purposes. Please update the filter macros to remove false positives.
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references:
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- https://www.welivesecurity.com/2022/04/12/industroyer2-industroyer-reloaded/
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- https://cert.gov.ua/article/39518
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tags:
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analytic_story:
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- Industroyer2
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- AwfulShred
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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: 70
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context:
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- Source:Endpoint
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- Stage:Defense Evasion
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dataset:
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- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1489/linux_service_stop_disable/sysmon_linux.log
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impact: 70
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kill_chain_phases:
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- Exploitation
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message: An instance of $parent_process_name$ spawning $process_name$ was identified
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attempting to disable services on endpoint $dest$ by $user$.
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mitre_attack_id:
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- T1489
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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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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.process_name
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- Processes.process
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- Processes.process_id
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- Processes.parent_process_id
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risk_score: 49
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security_domain: endpoint
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