mirror of
https://github.com/splunk/security_content
synced 2026-06-08 17:32:49 +00:00
P4T12ICK
84 lines
2.7 KiB
YAML
84 lines
2.7 KiB
YAML
name: Possible Lateral Movement PowerShell Spawn
|
|
id: cb909b3e-512b-11ec-aa31-3e22fbd008af
|
|
version: 1
|
|
date: '2021-11-29'
|
|
author: Mauricio Velazco, Splunk
|
|
status: production
|
|
type: TTP
|
|
description: The following analytic assists with identifying a PowerShell process
|
|
spawned as a child or grand child process of commonly abused processes during lateral
|
|
movement techniques including `services.exe`, `wmiprsve.exe`, `svchost.exe`, `wsmprovhost.exe`
|
|
and `mmc.exe`. Legitimate Windows features such as the Service Control Manager,
|
|
Windows Management Instrumentation, Task Scheduler, Windows Remote Management and
|
|
the DCOM protocol can be abused to start a process on a remote endpoint. Looking
|
|
for PowerShell spawned out of this processes may reveal a lateral movement attack.
|
|
Red Teams and adversaries alike may abuse these services during a breach for lateral
|
|
movement and remote code execution.
|
|
data_source:
|
|
- Sysmon Event ID 1
|
|
search:
|
|
selection1:
|
|
ParentImage:
|
|
- mmc.exe
|
|
- wsmprovhost.exe
|
|
- svchost.exe
|
|
- services.exe
|
|
- wmiprvse.exe
|
|
selection2:
|
|
CommandLine: '*powershell.exe*'
|
|
Image|endswith:
|
|
- cmd.exe
|
|
- powershell.exe
|
|
- pwsh.exe
|
|
selection3:
|
|
CommandLine: '*pwsh.exe*'
|
|
Image|endswith: cmd.exe
|
|
condition: (selection1) and selection2 and selection3
|
|
how_to_implement: To successfully implement this search, you need to be ingesting
|
|
logs with the process name, parent process, and command-line executions from your
|
|
endpoints.
|
|
known_false_positives: Legitimate applications may spawn PowerShell as a child process
|
|
of the the identified processes. Filter as needed.
|
|
references:
|
|
- https://attack.mitre.org/techniques/T1021/003/
|
|
- https://attack.mitre.org/techniques/T1021/006/
|
|
- https://attack.mitre.org/techniques/T1047/
|
|
- https://attack.mitre.org/techniques/T1053/005/
|
|
- https://attack.mitre.org/techniques/T1543/003/
|
|
tags:
|
|
analytic_story:
|
|
- Hermetic Wiper
|
|
- Active Directory Lateral Movement
|
|
- Malicious PowerShell
|
|
asset_type: Endpoint
|
|
confidence: 50
|
|
impact: 90
|
|
message: A PowerShell process was spawned as a child process of typically abused
|
|
processes on $dest$
|
|
mitre_attack_id:
|
|
- T1021
|
|
- T1021.003
|
|
- T1021.006
|
|
- T1047
|
|
- T1053.005
|
|
- T1543.003
|
|
- T1059.001
|
|
- T1218.014
|
|
observable:
|
|
- name: dest
|
|
type: Endpoint
|
|
role:
|
|
- Victim
|
|
product:
|
|
- Splunk Enterprise
|
|
- Splunk Enterprise Security
|
|
- Splunk Cloud
|
|
risk_score: 45
|
|
security_domain: endpoint
|
|
tests:
|
|
- name: True Positive Test
|
|
attack_data:
|
|
- data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1543.003/lateral_movement_powershell/windows-sysmon.log
|
|
source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
|
|
sourcetype: xmlwineventlog
|