Delete powershell_execute_com_object.yml

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tccontre
2021-08-16 15:01:13 +02:00
committed by GitHub
parent 8ea2d13a07
commit dacebfebcf
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name: Powershell Execute COM Object
id: 65711630-f9bf-11eb-8d72-acde48001122
version: 1
date: '2021-08-10'
author: Teoderick Contreras, Splunk
type: batch
datamodel:
- Endpoint
description: This search is to detect a COM CLSID execution through powershell. This
technique was seen in several adversaries and malware like ransomware conti where
it has a feature to execute command using COM Object. This technique may use by
network operator at some cases but a good indicator if some application want to
gain privilege escalation or bypass uac.
search: '`powershell` EventCode=4104 Message = "*CreateInstance([type]::GetTypeFromCLSID*"
OR Message = "*CreateInstance([Type]::GetTypeFromProgID*"| stats count min(_time)
as firstTime max(_time) as lastTime by EventCode Message ComputerName User | `security_content_ctime(firstTime)`
| `security_content_ctime(lastTime)` | `powershell_execute_com_object_filter`'
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. If you are using Sysmon, you must have at least version 6.0.4 of the
Sysmon TA.
known_false_positives: network operrator may use this command.
references:
- https://threadreaderapp.com/thread/1423361119926816776.html
tags:
analytic_story:
- Malicious PowerShell
- Ransomware
dataset:
- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/malware/conti/conti_leak/windows-powershell.log
kill_chain_phases:
- Exploitation
mitre_attack_id:
- T1546.015
product:
- Splunk Enterprise
- Splunk Enterprise Security
- Splunk Cloud
required_fields:
- _time
security_domain: endpoint
impact: 10
confidence: 50
risk_score: 5
context:
- Source:Endpoint
- Stage:Privilege Escalation
message: A suspicious powershell script contains COM CLSID command in $Message$
with EventCode $EventCode$ in host $ComputerName$
observable:
- name: ComputerName
type: Hostname
role:
- Victim
- name: User
type: User
role:
- Victim
automated_detection_testing: passed