Added detection testing service results inExcel Spawning PowerShell

This commit is contained in:
root
2021-04-21 19:42:18 +00:00
parent 93bde1ecea
commit c0835e27c4
@@ -15,20 +15,23 @@ description: The following detection identifies Microsoft Excel spawning PowerSh
and identify any files that may have been written.
search: '| tstats `security_content_summariesonly` count values(Processes.process)
min(_time) as firstTime max(_time) as lastTime from datamodel=Endpoint.Processes
where Processes.parent_process_name="excel.exe" Processes.process_name IN ("powershell.exe", "pwsh.exe") by Processes.parent_process Processes.process_name
Processes.user Processes.dest | `drop_dm_object_name("Processes")` | `security_content_ctime(firstTime)`|`security_content_ctime(lastTime)` | `excel_spawning_powershell_filter`'
where Processes.parent_process_name="excel.exe" Processes.process_name IN ("powershell.exe",
"pwsh.exe") by Processes.parent_process Processes.process_name Processes.user Processes.dest
| `drop_dm_object_name("Processes")` | `security_content_ctime(firstTime)`|`security_content_ctime(lastTime)`
| `excel_spawning_powershell_filter`'
how_to_implement: To successfully implement this search you need to be ingesting information
on process that include the name of the process responsible for the changes from
your endpoints into the `Endpoint` datamodel in the `Processes` node.
known_false_positives: False positives should be limited, but if any are present,
filter as needed.
references:
- https://redcanary.com/threat-detection-report/techniques/powershell/
- https://attack.mitre.org/techniques/T1566/001/
- https://redcanary.com/threat-detection-report/techniques/powershell/
- https://attack.mitre.org/techniques/T1566/001/
tags:
analytic_story:
- Spearphishing Attachments
dataset: []
dataset:
- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1566.001/macro/windows-sysmon.log
kill_chain_phases:
- Exploitation
mitre_attack_id:
@@ -45,4 +48,5 @@ tags:
- dest
- user
- parent_process_id
security_domain: endpoint
security_domain: endpoint
automated_detection_testing: passed