mirror of
https://github.com/splunk/security_content
synced 2026-06-08 17:32:49 +00:00
P4T12ICK
78 lines
2.8 KiB
YAML
78 lines
2.8 KiB
YAML
name: Windows COM Hijacking InprocServer32 Modification
|
|
id: b7bd83c0-92b5-4fc7-b286-23eccfa2c561
|
|
version: 1
|
|
date: '2022-09-26'
|
|
author: Michael Haag, Splunk
|
|
status: production
|
|
type: TTP
|
|
description: The following analytic identifies the use of reg.exe performing an add
|
|
to the InProcServer32, which may be related to COM hijacking. Adversaries can use
|
|
the COM system to insert malicious code that can be executed in place of legitimate
|
|
software through hijacking the COM references and relationships as a means for persistence.
|
|
Hijacking a COM object requires a change in the Registry to replace a reference
|
|
to a legitimate system component which may cause that component to not work when
|
|
executed. When that system component is executed through normal system operation
|
|
the adversary's code will be executed instead.
|
|
data_source:
|
|
- Sysmon Event ID 1
|
|
search:
|
|
selection1:
|
|
OriginalFileName: reg.exe
|
|
selection2:
|
|
Image|endswith: reg.exe
|
|
selection3:
|
|
CommandLine: '*inprocserver32*'
|
|
condition: (selection1 or selection2) and selection3
|
|
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 some filtering may be required.
|
|
references:
|
|
- https://attack.mitre.org/techniques/T1546/015/
|
|
- https://blog.cluster25.duskrise.com/2022/09/23/in-the-footsteps-of-the-fancy-bear-powerpoint-graphite/
|
|
- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1546.015/T1546.015.md
|
|
tags:
|
|
analytic_story:
|
|
- Living Off The Land
|
|
asset_type: Endpoint
|
|
confidence: 80
|
|
impact: 80
|
|
message: An instance of $parent_process_name$ spawning $process_name$ was identified
|
|
on endpoint $dest$ by user $user$ attempting to modify InProcServer32 within the
|
|
registry.
|
|
mitre_attack_id:
|
|
- T1546.015
|
|
- T1546
|
|
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: 64
|
|
security_domain: endpoint
|
|
tests:
|
|
- name: True Positive Test
|
|
attack_data:
|
|
- data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1546.015/atomic_red_team/windows-sysmon.log
|
|
source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
|
|
sourcetype: xmlwineventlog
|
|
update_timestamp: true
|