mirror of
https://github.com/splunk/security_content
synced 2026-06-08 17:32:49 +00:00
P4T12ICK
63 lines
2.2 KiB
YAML
63 lines
2.2 KiB
YAML
name: SLUI Spawning a Process
|
|
id: 879c4330-b3e0-11eb-b1b1-acde48001122
|
|
version: 1
|
|
date: '2021-05-13'
|
|
author: Michael Haag, Splunk
|
|
status: production
|
|
type: TTP
|
|
description: The following analytic identifies the Microsoft Software Licensing User
|
|
Interface Tool, `slui.exe`, spawning a child process. This behavior is associated
|
|
with publicly known UAC bypass. `slui.exe` is commonly associated with software
|
|
updates and is most often spawned by `svchost.exe`. The `slui.exe` process should
|
|
not have child processes, and any processes spawning from it will be running with
|
|
elevated privileges. During triage, review the child process and additional parallel
|
|
processes. Identify any file modifications that may have lead to the bypass.
|
|
data_source:
|
|
- Sysmon Event ID 1
|
|
search:
|
|
selection1:
|
|
ParentImage: slui.exe
|
|
condition: selection1
|
|
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: Certain applications may spawn from `slui.exe` that are legitimate.
|
|
Filtering will be needed to ensure proper monitoring.
|
|
references:
|
|
- https://www.exploit-db.com/exploits/46998
|
|
- https://www.rapid7.com/db/modules/exploit/windows/local/bypassuac_sluihijack/
|
|
- https://www.mandiant.com/resources/shining-a-light-on-darkside-ransomware-operations
|
|
tags:
|
|
analytic_story:
|
|
- DarkSide Ransomware
|
|
- Windows Defense Evasion Tactics
|
|
asset_type: Endpoint
|
|
confidence: 90
|
|
impact: 70
|
|
message: A slui process $parent_process_name$ spawning child process $process_name$
|
|
in host $dest$
|
|
mitre_attack_id:
|
|
- T1548.002
|
|
- T1548
|
|
observable:
|
|
- name: dest
|
|
type: Hostname
|
|
role:
|
|
- Victim
|
|
- name: user
|
|
type: User
|
|
role:
|
|
- Victim
|
|
product:
|
|
- Splunk Enterprise
|
|
- Splunk Enterprise Security
|
|
- Splunk Cloud
|
|
risk_score: 63
|
|
security_domain: endpoint
|
|
tests:
|
|
- name: True Positive Test
|
|
attack_data:
|
|
- data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1548.002/slui/windows-sysmon.log
|
|
source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
|
|
sourcetype: xmlwineventlog
|