mirror of
https://github.com/splunk/security_content
synced 2026-06-08 17:32:49 +00:00
P4T12ICK
73 lines
2.4 KiB
YAML
73 lines
2.4 KiB
YAML
name: Windows System Script Proxy Execution Syncappvpublishingserver
|
|
id: 8dd73f89-682d-444c-8b41-8e679966ad3c
|
|
version: 1
|
|
date: '2022-09-26'
|
|
author: Michael Haag, Splunk
|
|
status: production
|
|
type: TTP
|
|
description: The following analytic identifies the abuse of Syncappvpublishingserver.vbs,
|
|
which is a native script on Windows that may be utilized to download remote files
|
|
or perform privilege escalation.
|
|
data_source:
|
|
- Sysmon Event ID 1
|
|
search:
|
|
selection1:
|
|
CommandLine: '*syncappvpublishingserver.vbs*'
|
|
Image|endswith:
|
|
- wscript.exe
|
|
- cscript.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. In addition,
|
|
confirm the latest CIM App 4.20 or higher is installed and the latest TA for the
|
|
endpoint product.
|
|
known_false_positives: False positives may be present if the vbscript syncappvpublishingserver
|
|
is used for legitimate purposes. Filter as needed. Adding a n; to the command-line
|
|
arguments may help reduce any noise.
|
|
references:
|
|
- https://lolbas-project.github.io/lolbas/Scripts/Syncappvpublishingserver/
|
|
- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1216/T1216.md#atomic-test-1---syncappvpublishingserver-signed-script-powershell-command-execution
|
|
tags:
|
|
analytic_story:
|
|
- Living Off The Land
|
|
asset_type: Endpoint
|
|
confidence: 50
|
|
impact: 60
|
|
message: An instance of $parent_process_name$ spawning $process_name$ was identified
|
|
on endpoint $dest$ by user $user$ attempting to download files or evade critical
|
|
controls.
|
|
mitre_attack_id:
|
|
- T1216
|
|
- T1218
|
|
observable:
|
|
- name: user
|
|
type: User
|
|
role:
|
|
- Victim
|
|
- name: dest
|
|
type: Hostname
|
|
role:
|
|
- Victim
|
|
- name: parent_process_name
|
|
type: Process
|
|
role:
|
|
- Parent Process
|
|
- name: process_name
|
|
type: Process
|
|
role:
|
|
- Child Process
|
|
product:
|
|
- Splunk Enterprise
|
|
- Splunk Enterprise Security
|
|
- Splunk Cloud
|
|
risk_score: 30
|
|
security_domain: endpoint
|
|
tests:
|
|
- name: True Positive Test
|
|
attack_data:
|
|
- data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1216/atomic_red_team/windows-sysmon.log
|
|
source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
|
|
sourcetype: xmlwineventlog
|
|
update_timestamp: true
|