mirror of
https://github.com/splunk/security_content
synced 2026-06-08 17:32:49 +00:00
pyth0n1c
74 lines
2.5 KiB
YAML
74 lines
2.5 KiB
YAML
name: Jscript Execution Using Cscript App
|
|
id: 002f1e24-146e-11ec-a470-acde48001122
|
|
version: 1
|
|
date: '2021-09-13'
|
|
author: Teoderick Contreras, Splunk
|
|
type: TTP
|
|
datamodel:
|
|
- Endpoint
|
|
description: This search is to detect a execution of jscript using cscript process.
|
|
Commonly when a user run jscript file it was executed by wscript.exe application.
|
|
This technique was seen in FIN7 js implant to execute its malicious script using
|
|
cscript process. This behavior is uncommon and a good artifacts to check further
|
|
anomalies within the network
|
|
search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time)
|
|
as lastTime from datamodel=Endpoint.Processes where (Processes.parent_process_name
|
|
= "cscript.exe" AND Processes.parent_process = "*//e:jscript*") OR (Processes.process_name
|
|
= "cscript.exe" AND Processes.process = "*//e:jscript*") by Processes.parent_process_name
|
|
Processes.parent_process Processes.process_name Processes.process_id Processes.process
|
|
Processes.dest Processes.user | `drop_dm_object_name(Processes)` | `security_content_ctime(firstTime)`
|
|
| `security_content_ctime(lastTime)` | `jscript_execution_using_cscript_app_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: unknown
|
|
references:
|
|
- https://www.mandiant.com/resources/fin7-pursuing-an-enigmatic-and-evasive-global-criminal-operation
|
|
- https://attack.mitre.org/groups/G0046/
|
|
tags:
|
|
analytic_story:
|
|
- FIN7
|
|
- Remcos
|
|
confidence: 70
|
|
context:
|
|
- Source:Endpoint
|
|
- Stage:Execution
|
|
dataset:
|
|
- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/malware/fin7/fin7_macro_js_1/sysmon.log
|
|
impact: 70
|
|
kill_chain_phases:
|
|
- Exploitation
|
|
message: Process name $process_name$ with commandline $process$ to execute jscript
|
|
in $dest$
|
|
mitre_attack_id:
|
|
- T1059
|
|
- T1059.007
|
|
observable:
|
|
- name: dest
|
|
type: Endpoint
|
|
role:
|
|
- Victim
|
|
- name: user
|
|
type: User
|
|
role:
|
|
- Victim
|
|
product:
|
|
- Splunk Enterprise
|
|
- Splunk Enterprise Security
|
|
- Splunk Cloud
|
|
required_fields:
|
|
- _time
|
|
- Processes.parent_process_name
|
|
- Processes.parent_process
|
|
- Processes.process_name
|
|
- Processes.process_id
|
|
- Processes.process
|
|
- Processes.dest
|
|
- Processes.user
|
|
risk_score: 49
|
|
security_domain: endpoint
|
|
supported_tas:
|
|
- Splunk_TA_microsoft_sysmon
|
|
asset_type: Endpoint
|