Added detection testing service results inGet-ForestTrust with PowerShell

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root
2021-09-08 02:26:36 +00:00
parent 6664cbfc24
commit ee4d6c3b3c
@@ -6,25 +6,32 @@ author: Michael Haag, Splunk
type: TTP
datamodel:
- Endpoint
description: 'This analytic identifies Get-ForestTrust from PowerSploit in order to gather domain trust information.
Typically, this is utilized within a script being executed and used to enumerate the domain trust information. This grants the adversary an understanding of how large or small the domain is.
During triage, review parallel processes using an EDR product or 4688 events. It will be important to understand the timeline of events around this activity.'
description: This analytic identifies Get-ForestTrust from PowerSploit in order to
gather domain trust information. Typically, this is utilized within a script being
executed and used to enumerate the domain trust information. This grants the adversary
an understanding of how large or small the domain is. During triage, review parallel
processes using an EDR product or 4688 events. It will be important to understand
the timeline of events around this activity.
search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time)
as lastTime from datamodel=Endpoint.Processes where Processes.process_name=powershell.exe OR Processes.process_name=cmd.exe
Processes.process=*get-foresttrust* by Processes.dest Processes.user Processes.parent_process_name Processes.process_name
Processes.process Processes.process_id Processes.parent_process_id
| `drop_dm_object_name(Processes)`
| `security_content_ctime(firstTime)`
| `security_content_ctime(lastTime)`
| `get_foresttrust_with_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. In addition, confirm the latest CIM App 4.20 or higher is installed and the latest TA for the endpoint product.
known_false_positives: Limited false positives as this requires an active Administrator or adversary to bring in, import, and execute.
as lastTime from datamodel=Endpoint.Processes where Processes.process_name=powershell.exe
OR Processes.process_name=cmd.exe Processes.process=*get-foresttrust* by Processes.dest
Processes.user Processes.parent_process_name Processes.process_name Processes.process
Processes.process_id Processes.parent_process_id | `drop_dm_object_name(Processes)`
| `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` | `get_foresttrust_with_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. In addition,
confirm the latest CIM App 4.20 or higher is installed and the latest TA for the
endpoint product.
known_false_positives: Limited false positives as this requires an active Administrator
or adversary to bring in, import, and execute.
references:
- https://powersploit.readthedocs.io/en/latest/Recon/Get-ForestTrust/
- https://powersploit.readthedocs.io/en/latest/Recon/Get-ForestTrust/
tags:
analytic_story:
- Active Directory Discovery
dataset: []
dataset:
- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1482/discovery/windows-sysmon.log
kill_chain_phases:
- Reconnaissance
mitre_attack_id:
@@ -37,24 +44,24 @@ tags:
- _time
- Processes.dest
- Processes.user
- Processes.parent_process_name #parent process name
- Processes.parent_process #parent cmdline
- Processes.parent_process_name
- Processes.parent_process
- Processes.original_file_name
- Processes.process_name #process name
- Processes.process #process cmdline
- Processes.process_name
- Processes.process
- Processes.process_id
- Processes.parent_process_path
- Processes.process_path
- Processes.parent_process_id
security_domain: endpoint
impact: 30
impact: 30
confidence: 40
# (impact * confidence)/100
risk_score: 12
context:
- Source:Endpoint
- Stage:Defense Evasion
message: Suspicious PowerShell Get-ForestTrust was identified on endpoint $dest$ by user $user$.
message: Suspicious PowerShell Get-ForestTrust was identified on endpoint $dest$
by user $user$.
observable:
- name: user
type: User
@@ -63,4 +70,5 @@ tags:
- name: dest
type: Hostname
role:
- Victim
- Victim
automated_detection_testing: passed