mirror of
https://github.com/splunk/security_content
synced 2026-06-08 17:32:49 +00:00
P4T12ICK
79 lines
2.6 KiB
YAML
79 lines
2.6 KiB
YAML
name: Windows InstallUtil in Non Standard Path
|
|
id: dcf74b22-7933-11ec-857c-acde48001122
|
|
version: 1
|
|
date: '2022-01-19'
|
|
author: Michael Haag, Splunk
|
|
status: production
|
|
type: TTP
|
|
description: The following analytic identifies the Windows binary InstallUtil.exe
|
|
running from a non-standard location. The analytic utilizes a macro for InstallUtil
|
|
and identifies both the process_name and original_file_name.
|
|
data_source:
|
|
- Sysmon Event ID 1
|
|
search:
|
|
selection1:
|
|
OriginalFileName: InstallUtil.exe
|
|
selection2:
|
|
Image|endswith: installutil.exe
|
|
condition: (selection1 or selection2)
|
|
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 and filtering may be required.
|
|
Certain utilities will run from non-standard paths based on the third-party application
|
|
in use.
|
|
references:
|
|
- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1036.003/T1036.003.yaml
|
|
- https://attack.mitre.org/techniques/T1036/003/
|
|
- https://www.microsoft.com/security/blog/2022/01/15/destructive-malware-targeting-ukrainian-organizations/
|
|
- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1218.004/T1218.004.md
|
|
tags:
|
|
analytic_story:
|
|
- Masquerading - Rename System Utilities
|
|
- Unusual Processes
|
|
- Ransomware
|
|
- Signed Binary Proxy Execution InstallUtil
|
|
- WhisperGate
|
|
- Living Off The Land
|
|
asset_type: Endpoint
|
|
confidence: 70
|
|
impact: 70
|
|
message: An instance of $parent_process_name$ spawning $process_name$ from a non-standard
|
|
path was identified on endpoint $dest$ by user $user$.
|
|
mitre_attack_id:
|
|
- T1036
|
|
- T1036.003
|
|
- T1218
|
|
- T1218.004
|
|
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: 49
|
|
security_domain: endpoint
|
|
tests:
|
|
- name: True Positive Test
|
|
attack_data:
|
|
- data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1218.004/atomic_red_team/windows-sysmon_installutil_path.log
|
|
source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
|
|
sourcetype: xmlwineventlog
|